/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 12:57:59,154 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 12:57:59,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 12:57:59,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 12:57:59,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 12:57:59,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 12:57:59,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 12:57:59,199 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 12:57:59,200 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 12:57:59,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 12:57:59,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 12:57:59,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 12:57:59,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 12:57:59,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 12:57:59,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 12:57:59,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 12:57:59,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 12:57:59,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 12:57:59,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 12:57:59,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 12:57:59,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 12:57:59,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 12:57:59,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 12:57:59,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 12:57:59,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 12:57:59,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 12:57:59,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 12:57:59,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 12:57:59,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 12:57:59,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 12:57:59,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 12:57:59,241 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 12:57:59,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 12:57:59,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 12:57:59,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 12:57:59,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 12:57:59,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 12:57:59,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 12:57:59,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 12:57:59,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 12:57:59,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 12:57:59,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 12:57:59,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 12:57:59,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 12:57:59,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 12:57:59,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 12:57:59,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 12:57:59,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 12:57:59,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:57:59,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 12:57:59,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 12:57:59,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 12:57:59,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 12:57:59,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:57:59,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 12:57:59,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 12:57:59,246 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 12:57:59,536 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 12:57:59,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 12:57:59,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 12:57:59,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 12:57:59,556 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 12:57:59,557 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi01.c [2020-07-21 12:57:59,621 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90bd7b5eb/4a8516eb02564539904bc7d6d974a7de/FLAGa1e1c738b [2020-07-21 12:58:00,079 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 12:58:00,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi01.c [2020-07-21 12:58:00,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90bd7b5eb/4a8516eb02564539904bc7d6d974a7de/FLAGa1e1c738b [2020-07-21 12:58:00,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90bd7b5eb/4a8516eb02564539904bc7d6d974a7de [2020-07-21 12:58:00,445 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 12:58:00,449 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 12:58:00,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 12:58:00,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 12:58:00,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 12:58:00,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:58:00" (1/1) ... [2020-07-21 12:58:00,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d37557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00, skipping insertion in model container [2020-07-21 12:58:00,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:58:00" (1/1) ... [2020-07-21 12:58:00,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 12:58:00,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 12:58:00,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:58:00,756 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 12:58:00,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 12:58:00,784 INFO L208 MainTranslator]: Completed translation [2020-07-21 12:58:00,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00 WrapperNode [2020-07-21 12:58:00,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 12:58:00,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 12:58:00,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 12:58:00,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 12:58:00,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00" (1/1) ... [2020-07-21 12:58:00,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00" (1/1) ... [2020-07-21 12:58:00,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00" (1/1) ... [2020-07-21 12:58:00,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00" (1/1) ... [2020-07-21 12:58:00,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00" (1/1) ... [2020-07-21 12:58:00,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00" (1/1) ... [2020-07-21 12:58:00,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00" (1/1) ... [2020-07-21 12:58:00,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 12:58:00,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 12:58:00,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 12:58:00,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 12:58:00,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 12:58:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 12:58:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 12:58:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-07-21 12:58:00,965 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2020-07-21 12:58:00,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 12:58:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 12:58:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 12:58:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-07-21 12:58:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2020-07-21 12:58:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 12:58:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 12:58:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 12:58:01,183 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 12:58:01,184 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 12:58:01,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:58:01 BoogieIcfgContainer [2020-07-21 12:58:01,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 12:58:01,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 12:58:01,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 12:58:01,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 12:58:01,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:58:00" (1/3) ... [2020-07-21 12:58:01,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa2045f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:58:01, skipping insertion in model container [2020-07-21 12:58:01,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:58:00" (2/3) ... [2020-07-21 12:58:01,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa2045f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:58:01, skipping insertion in model container [2020-07-21 12:58:01,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:58:01" (3/3) ... [2020-07-21 12:58:01,197 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2020-07-21 12:58:01,209 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 12:58:01,216 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 12:58:01,232 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 12:58:01,258 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 12:58:01,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 12:58:01,259 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 12:58:01,259 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 12:58:01,259 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 12:58:01,259 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 12:58:01,259 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 12:58:01,259 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 12:58:01,285 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-21 12:58:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 12:58:01,296 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:01,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:01,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:01,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:01,307 INFO L82 PathProgramCache]: Analyzing trace with hash -629617454, now seen corresponding path program 1 times [2020-07-21 12:58:01,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:01,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448702837] [2020-07-21 12:58:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:01,429 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:01,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:01,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 12:58:01,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:01,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 12:58:01,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 12:58:01,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448702837] [2020-07-21 12:58:01,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 12:58:01,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 12:58:01,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777672770] [2020-07-21 12:58:01,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 12:58:01,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:01,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 12:58:01,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 12:58:01,550 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-07-21 12:58:01,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:01,669 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-07-21 12:58:01,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 12:58:01,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-07-21 12:58:01,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:01,686 INFO L225 Difference]: With dead ends: 48 [2020-07-21 12:58:01,686 INFO L226 Difference]: Without dead ends: 27 [2020-07-21 12:58:01,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 12:58:01,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-21 12:58:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-21 12:58:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-21 12:58:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-07-21 12:58:01,746 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 20 [2020-07-21 12:58:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:01,746 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-07-21 12:58:01,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 12:58:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-07-21 12:58:01,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-21 12:58:01,750 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:01,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:01,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:01,965 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:01,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:01,966 INFO L82 PathProgramCache]: Analyzing trace with hash 223523063, now seen corresponding path program 1 times [2020-07-21 12:58:01,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:01,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319513552] [2020-07-21 12:58:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:02,025 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:02,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:02,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 12:58:02,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-21 12:58:02,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:02,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 12:58:02,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319513552] [2020-07-21 12:58:02,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:02,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2020-07-21 12:58:02,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387557045] [2020-07-21 12:58:02,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 12:58:02,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:02,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 12:58:02,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-07-21 12:58:02,368 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 15 states. [2020-07-21 12:58:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:02,996 INFO L93 Difference]: Finished difference Result 78 states and 108 transitions. [2020-07-21 12:58:02,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-21 12:58:02,997 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2020-07-21 12:58:02,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:03,000 INFO L225 Difference]: With dead ends: 78 [2020-07-21 12:58:03,000 INFO L226 Difference]: Without dead ends: 72 [2020-07-21 12:58:03,002 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2020-07-21 12:58:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-21 12:58:03,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2020-07-21 12:58:03,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 12:58:03,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2020-07-21 12:58:03,026 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 30 [2020-07-21 12:58:03,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:03,026 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2020-07-21 12:58:03,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 12:58:03,027 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2020-07-21 12:58:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 12:58:03,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:03,030 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:03,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:03,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:03,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:03,245 INFO L82 PathProgramCache]: Analyzing trace with hash 640231516, now seen corresponding path program 2 times [2020-07-21 12:58:03,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:03,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1776066851] [2020-07-21 12:58:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:03,302 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:03,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:03,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 12:58:03,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:03,359 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 12:58:03,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:03,613 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:03,617 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:03,723 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 12:58:03,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1776066851] [2020-07-21 12:58:03,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:03,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2020-07-21 12:58:03,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791356978] [2020-07-21 12:58:03,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 12:58:03,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:03,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 12:58:03,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-07-21 12:58:03,726 INFO L87 Difference]: Start difference. First operand 61 states and 87 transitions. Second operand 11 states. [2020-07-21 12:58:03,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:03,926 INFO L93 Difference]: Finished difference Result 108 states and 173 transitions. [2020-07-21 12:58:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 12:58:03,927 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-07-21 12:58:03,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:03,930 INFO L225 Difference]: With dead ends: 108 [2020-07-21 12:58:03,930 INFO L226 Difference]: Without dead ends: 74 [2020-07-21 12:58:03,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-07-21 12:58:03,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-21 12:58:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 67. [2020-07-21 12:58:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 12:58:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 88 transitions. [2020-07-21 12:58:03,971 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 88 transitions. Word has length 40 [2020-07-21 12:58:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:03,972 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 88 transitions. [2020-07-21 12:58:03,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 12:58:03,976 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 88 transitions. [2020-07-21 12:58:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 12:58:03,979 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:03,979 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:04,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:04,194 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:04,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:04,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1772916587, now seen corresponding path program 1 times [2020-07-21 12:58:04,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:04,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455495447] [2020-07-21 12:58:04,195 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:04,236 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:04,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:04,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 12:58:04,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 12:58:04,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:04,424 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:04,425 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:04,568 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 12:58:04,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455495447] [2020-07-21 12:58:04,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:04,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 13 [2020-07-21 12:58:04,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300719582] [2020-07-21 12:58:04,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 12:58:04,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:04,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 12:58:04,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-07-21 12:58:04,609 INFO L87 Difference]: Start difference. First operand 67 states and 88 transitions. Second operand 13 states. [2020-07-21 12:58:04,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:04,790 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2020-07-21 12:58:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 12:58:04,791 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-07-21 12:58:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:04,793 INFO L225 Difference]: With dead ends: 80 [2020-07-21 12:58:04,793 INFO L226 Difference]: Without dead ends: 60 [2020-07-21 12:58:04,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-07-21 12:58:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-07-21 12:58:04,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-07-21 12:58:04,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-07-21 12:58:04,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2020-07-21 12:58:04,806 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 36 [2020-07-21 12:58:04,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:04,806 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2020-07-21 12:58:04,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 12:58:04,807 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2020-07-21 12:58:04,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-21 12:58:04,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:04,809 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:05,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:05,022 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:05,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:05,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1240446734, now seen corresponding path program 3 times [2020-07-21 12:58:05,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:05,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998346554] [2020-07-21 12:58:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:05,067 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:05,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:05,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 12:58:05,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 12:58:05,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:05,376 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-21 12:58:05,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998346554] [2020-07-21 12:58:05,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:05,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 11 [2020-07-21 12:58:05,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676200370] [2020-07-21 12:58:05,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 12:58:05,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:05,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 12:58:05,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 12:58:05,404 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand 11 states. [2020-07-21 12:58:05,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:05,594 INFO L93 Difference]: Finished difference Result 91 states and 141 transitions. [2020-07-21 12:58:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 12:58:05,594 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-07-21 12:58:05,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:05,596 INFO L225 Difference]: With dead ends: 91 [2020-07-21 12:58:05,596 INFO L226 Difference]: Without dead ends: 58 [2020-07-21 12:58:05,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-07-21 12:58:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-21 12:58:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-07-21 12:58:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-07-21 12:58:05,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2020-07-21 12:58:05,621 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 40 [2020-07-21 12:58:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:05,622 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2020-07-21 12:58:05,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 12:58:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2020-07-21 12:58:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-21 12:58:05,623 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:05,625 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:05,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:05,826 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:05,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:05,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1471069545, now seen corresponding path program 4 times [2020-07-21 12:58:05,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:05,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226901498] [2020-07-21 12:58:05,828 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:05,882 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:05,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:05,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 12:58:05,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:05,939 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 30 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-07-21 12:58:05,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:06,249 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:06,251 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:06,300 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:06,347 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-21 12:58:06,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226901498] [2020-07-21 12:58:06,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:06,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 13 [2020-07-21 12:58:06,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309668106] [2020-07-21 12:58:06,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 12:58:06,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:06,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 12:58:06,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-07-21 12:58:06,352 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 13 states. [2020-07-21 12:58:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:06,526 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2020-07-21 12:58:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 12:58:06,527 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-07-21 12:58:06,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:06,529 INFO L225 Difference]: With dead ends: 58 [2020-07-21 12:58:06,529 INFO L226 Difference]: Without dead ends: 54 [2020-07-21 12:58:06,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 79 SyntacticMatches, 9 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-07-21 12:58:06,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-07-21 12:58:06,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-07-21 12:58:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-21 12:58:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-07-21 12:58:06,539 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 50 [2020-07-21 12:58:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:06,539 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-07-21 12:58:06,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 12:58:06,539 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-07-21 12:58:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-21 12:58:06,541 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:06,542 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:06,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:06,755 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:06,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:06,756 INFO L82 PathProgramCache]: Analyzing trace with hash -979408629, now seen corresponding path program 2 times [2020-07-21 12:58:06,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:06,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269355307] [2020-07-21 12:58:06,757 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:06,812 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:06,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:06,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 47 conjunts are in the unsatisfiable core [2020-07-21 12:58:06,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-07-21 12:58:06,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-07-21 12:58:07,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269355307] [2020-07-21 12:58:07,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:07,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 18] total 27 [2020-07-21 12:58:07,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536221911] [2020-07-21 12:58:07,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-21 12:58:07,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:07,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-21 12:58:07,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2020-07-21 12:58:07,604 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 27 states. [2020-07-21 12:58:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:09,346 INFO L93 Difference]: Finished difference Result 105 states and 143 transitions. [2020-07-21 12:58:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-21 12:58:09,347 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 56 [2020-07-21 12:58:09,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:09,349 INFO L225 Difference]: With dead ends: 105 [2020-07-21 12:58:09,349 INFO L226 Difference]: Without dead ends: 101 [2020-07-21 12:58:09,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=434, Invalid=2322, Unknown=0, NotChecked=0, Total=2756 [2020-07-21 12:58:09,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-07-21 12:58:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2020-07-21 12:58:09,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-21 12:58:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 115 transitions. [2020-07-21 12:58:09,390 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 115 transitions. Word has length 56 [2020-07-21 12:58:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:09,391 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 115 transitions. [2020-07-21 12:58:09,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-21 12:58:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 115 transitions. [2020-07-21 12:58:09,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-21 12:58:09,397 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:09,397 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:09,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:09,612 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:09,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:09,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1033208535, now seen corresponding path program 3 times [2020-07-21 12:58:09,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:09,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596346724] [2020-07-21 12:58:09,614 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:09,674 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:09,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:09,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 12:58:09,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 37 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-07-21 12:58:09,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:09,981 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:09,982 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:10,027 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:10,028 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:10,288 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:10,289 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:10,338 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:10,340 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 17 proven. 45 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-07-21 12:58:10,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596346724] [2020-07-21 12:58:10,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:10,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 17 [2020-07-21 12:58:10,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580403400] [2020-07-21 12:58:10,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 12:58:10,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:10,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 12:58:10,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-07-21 12:58:10,369 INFO L87 Difference]: Start difference. First operand 84 states and 115 transitions. Second operand 17 states. [2020-07-21 12:58:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:10,596 INFO L93 Difference]: Finished difference Result 103 states and 147 transitions. [2020-07-21 12:58:10,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 12:58:10,596 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 62 [2020-07-21 12:58:10,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:10,599 INFO L225 Difference]: With dead ends: 103 [2020-07-21 12:58:10,600 INFO L226 Difference]: Without dead ends: 85 [2020-07-21 12:58:10,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 95 SyntacticMatches, 13 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2020-07-21 12:58:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-07-21 12:58:10,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2020-07-21 12:58:10,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-21 12:58:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2020-07-21 12:58:10,616 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 62 [2020-07-21 12:58:10,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:10,616 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2020-07-21 12:58:10,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 12:58:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2020-07-21 12:58:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-07-21 12:58:10,619 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:10,619 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:10,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:10,833 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:10,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:10,834 INFO L82 PathProgramCache]: Analyzing trace with hash -633873909, now seen corresponding path program 4 times [2020-07-21 12:58:10,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:10,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562690542] [2020-07-21 12:58:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:10,927 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:10,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:10,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 12:58:10,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:11,015 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 48 proven. 125 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2020-07-21 12:58:11,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:11,137 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:11,138 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:11,577 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:11,578 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:11,686 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:11,687 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:11,731 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 48 proven. 135 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-07-21 12:58:11,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562690542] [2020-07-21 12:58:11,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:11,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 17 [2020-07-21 12:58:11,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841702835] [2020-07-21 12:58:11,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-21 12:58:11,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:11,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-21 12:58:11,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-07-21 12:58:11,769 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand 17 states. [2020-07-21 12:58:12,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:12,041 INFO L93 Difference]: Finished difference Result 85 states and 118 transitions. [2020-07-21 12:58:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 12:58:12,041 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 96 [2020-07-21 12:58:12,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:12,043 INFO L225 Difference]: With dead ends: 85 [2020-07-21 12:58:12,043 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 12:58:12,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 163 SyntacticMatches, 13 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-07-21 12:58:12,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 12:58:12,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 61. [2020-07-21 12:58:12,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 12:58:12,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 84 transitions. [2020-07-21 12:58:12,053 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 84 transitions. Word has length 96 [2020-07-21 12:58:12,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:12,054 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 84 transitions. [2020-07-21 12:58:12,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-21 12:58:12,054 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 84 transitions. [2020-07-21 12:58:12,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-07-21 12:58:12,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:12,056 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 10, 9, 9, 9, 9, 9, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:12,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:12,259 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:12,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:12,260 INFO L82 PathProgramCache]: Analyzing trace with hash -913129353, now seen corresponding path program 5 times [2020-07-21 12:58:12,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:12,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931516807] [2020-07-21 12:58:12,263 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:12,374 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:12,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:12,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 12:58:12,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 182 proven. 205 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2020-07-21 12:58:12,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:13,190 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:13,296 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:13,345 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:13,346 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:13,393 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:13,632 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:13,679 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:13,680 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:13,716 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 182 proven. 218 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2020-07-21 12:58:13,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931516807] [2020-07-21 12:58:13,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:13,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 19 [2020-07-21 12:58:13,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620842890] [2020-07-21 12:58:13,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-21 12:58:13,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:13,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-21 12:58:13,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2020-07-21 12:58:13,719 INFO L87 Difference]: Start difference. First operand 61 states and 84 transitions. Second operand 19 states. [2020-07-21 12:58:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:14,168 INFO L93 Difference]: Finished difference Result 133 states and 216 transitions. [2020-07-21 12:58:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 12:58:14,168 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-07-21 12:58:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:14,172 INFO L225 Difference]: With dead ends: 133 [2020-07-21 12:58:14,172 INFO L226 Difference]: Without dead ends: 91 [2020-07-21 12:58:14,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 211 SyntacticMatches, 15 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=677, Unknown=0, NotChecked=0, Total=930 [2020-07-21 12:58:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-21 12:58:14,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2020-07-21 12:58:14,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-21 12:58:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 104 transitions. [2020-07-21 12:58:14,186 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 104 transitions. Word has length 122 [2020-07-21 12:58:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:14,187 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 104 transitions. [2020-07-21 12:58:14,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-21 12:58:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 104 transitions. [2020-07-21 12:58:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-07-21 12:58:14,188 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:14,189 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:14,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:14,399 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:14,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:14,400 INFO L82 PathProgramCache]: Analyzing trace with hash 542454743, now seen corresponding path program 6 times [2020-07-21 12:58:14,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:14,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955457409] [2020-07-21 12:58:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:14,495 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:14,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:14,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 91 conjunts are in the unsatisfiable core [2020-07-21 12:58:14,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2020-07-21 12:58:14,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-07-21 12:58:16,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955457409] [2020-07-21 12:58:16,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:16,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 32] total 45 [2020-07-21 12:58:16,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204990027] [2020-07-21 12:58:16,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-21 12:58:16,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:16,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-21 12:58:16,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2020-07-21 12:58:16,469 INFO L87 Difference]: Start difference. First operand 78 states and 104 transitions. Second operand 45 states. [2020-07-21 12:58:19,103 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 26 [2020-07-21 12:58:23,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:23,696 INFO L93 Difference]: Finished difference Result 211 states and 283 transitions. [2020-07-21 12:58:23,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-07-21 12:58:23,697 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 102 [2020-07-21 12:58:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:23,703 INFO L225 Difference]: With dead ends: 211 [2020-07-21 12:58:23,703 INFO L226 Difference]: Without dead ends: 207 [2020-07-21 12:58:23,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 148 SyntacticMatches, 14 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1797, Invalid=10413, Unknown=0, NotChecked=0, Total=12210 [2020-07-21 12:58:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-07-21 12:58:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 189. [2020-07-21 12:58:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-07-21 12:58:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 258 transitions. [2020-07-21 12:58:23,759 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 258 transitions. Word has length 102 [2020-07-21 12:58:23,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:23,761 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 258 transitions. [2020-07-21 12:58:23,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-21 12:58:23,761 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 258 transitions. [2020-07-21 12:58:23,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-07-21 12:58:23,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:23,767 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 8, 7, 7, 7, 7, 7, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:23,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:23,972 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:23,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1145252683, now seen corresponding path program 7 times [2020-07-21 12:58:23,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:23,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886090465] [2020-07-21 12:58:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:24,092 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:24,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:24,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 12:58:24,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:24,196 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 48 proven. 138 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-07-21 12:58:24,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:24,492 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:24,493 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:24,582 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:24,583 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:24,634 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:24,635 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:25,099 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:25,220 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:25,221 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:25,284 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 48 proven. 156 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-07-21 12:58:25,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886090465] [2020-07-21 12:58:25,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:25,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 21 [2020-07-21 12:58:25,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984007185] [2020-07-21 12:58:25,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-21 12:58:25,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:25,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-21 12:58:25,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-07-21 12:58:25,342 INFO L87 Difference]: Start difference. First operand 189 states and 258 transitions. Second operand 21 states. [2020-07-21 12:58:25,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:25,660 INFO L93 Difference]: Finished difference Result 215 states and 295 transitions. [2020-07-21 12:58:25,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 12:58:25,660 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 108 [2020-07-21 12:58:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:25,663 INFO L225 Difference]: With dead ends: 215 [2020-07-21 12:58:25,663 INFO L226 Difference]: Without dead ends: 177 [2020-07-21 12:58:25,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 179 SyntacticMatches, 17 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2020-07-21 12:58:25,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-07-21 12:58:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 161. [2020-07-21 12:58:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-21 12:58:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 224 transitions. [2020-07-21 12:58:25,684 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 224 transitions. Word has length 108 [2020-07-21 12:58:25,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:25,684 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 224 transitions. [2020-07-21 12:58:25,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-21 12:58:25,685 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 224 transitions. [2020-07-21 12:58:25,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-21 12:58:25,687 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:25,688 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 12, 11, 11, 11, 11, 11, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:25,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:25,902 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:25,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:25,903 INFO L82 PathProgramCache]: Analyzing trace with hash -370212393, now seen corresponding path program 8 times [2020-07-21 12:58:25,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:25,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085920525] [2020-07-21 12:58:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:26,040 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:26,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:26,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 12:58:26,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:26,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 233 proven. 268 refuted. 0 times theorem prover too weak. 635 trivial. 0 not checked. [2020-07-21 12:58:26,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:26,738 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:26,739 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:26,786 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:27,227 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:27,228 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:27,350 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:27,351 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:27,398 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 233 proven. 281 refuted. 0 times theorem prover too weak. 622 trivial. 0 not checked. [2020-07-21 12:58:27,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085920525] [2020-07-21 12:58:27,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:27,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 19 [2020-07-21 12:58:27,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391763573] [2020-07-21 12:58:27,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-21 12:58:27,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:27,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-21 12:58:27,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-07-21 12:58:27,445 INFO L87 Difference]: Start difference. First operand 161 states and 224 transitions. Second operand 19 states. [2020-07-21 12:58:27,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:27,822 INFO L93 Difference]: Finished difference Result 252 states and 375 transitions. [2020-07-21 12:58:27,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 12:58:27,823 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 142 [2020-07-21 12:58:27,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:27,825 INFO L225 Difference]: With dead ends: 252 [2020-07-21 12:58:27,825 INFO L226 Difference]: Without dead ends: 182 [2020-07-21 12:58:27,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 251 SyntacticMatches, 15 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-07-21 12:58:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-07-21 12:58:27,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 158. [2020-07-21 12:58:27,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-21 12:58:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 215 transitions. [2020-07-21 12:58:27,848 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 215 transitions. Word has length 142 [2020-07-21 12:58:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:27,849 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 215 transitions. [2020-07-21 12:58:27,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-21 12:58:27,849 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 215 transitions. [2020-07-21 12:58:27,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-07-21 12:58:27,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:27,853 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:28,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:28,067 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:28,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:28,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2107974185, now seen corresponding path program 9 times [2020-07-21 12:58:28,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:28,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273040078] [2020-07-21 12:58:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:28,240 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:28,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:28,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-21 12:58:28,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 115 proven. 396 refuted. 0 times theorem prover too weak. 1573 trivial. 0 not checked. [2020-07-21 12:58:28,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:28,554 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:28,555 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:28,603 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:29,461 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:29,462 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:29,659 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:29,757 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:29,820 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:58:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2084 backedges. 115 proven. 416 refuted. 0 times theorem prover too weak. 1553 trivial. 0 not checked. [2020-07-21 12:58:29,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273040078] [2020-07-21 12:58:29,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:29,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 21 [2020-07-21 12:58:29,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247185503] [2020-07-21 12:58:29,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-21 12:58:29,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:29,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-21 12:58:29,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2020-07-21 12:58:29,899 INFO L87 Difference]: Start difference. First operand 158 states and 215 transitions. Second operand 21 states. [2020-07-21 12:58:30,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:58:30,208 INFO L93 Difference]: Finished difference Result 175 states and 232 transitions. [2020-07-21 12:58:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-21 12:58:30,208 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 182 [2020-07-21 12:58:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:58:30,211 INFO L225 Difference]: With dead ends: 175 [2020-07-21 12:58:30,211 INFO L226 Difference]: Without dead ends: 171 [2020-07-21 12:58:30,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 327 SyntacticMatches, 17 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=173, Invalid=639, Unknown=0, NotChecked=0, Total=812 [2020-07-21 12:58:30,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-07-21 12:58:30,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2020-07-21 12:58:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-21 12:58:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 218 transitions. [2020-07-21 12:58:30,233 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 218 transitions. Word has length 182 [2020-07-21 12:58:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:58:30,237 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 218 transitions. [2020-07-21 12:58:30,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-21 12:58:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 218 transitions. [2020-07-21 12:58:30,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-07-21 12:58:30,240 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:58:30,240 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:58:30,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:30,455 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:58:30,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:58:30,455 INFO L82 PathProgramCache]: Analyzing trace with hash 836851019, now seen corresponding path program 10 times [2020-07-21 12:58:30,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:58:30,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653259857] [2020-07-21 12:58:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:58:30,635 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:58:30,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:58:30,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 175 conjunts are in the unsatisfiable core [2020-07-21 12:58:30,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:58:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 705 refuted. 0 times theorem prover too weak. 1395 trivial. 0 not checked. [2020-07-21 12:58:31,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:58:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2100 backedges. 0 proven. 2025 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-07-21 12:58:36,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653259857] [2020-07-21 12:58:36,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:58:36,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 58] total 75 [2020-07-21 12:58:36,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231532359] [2020-07-21 12:58:36,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-07-21 12:58:36,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:58:36,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-07-21 12:58:36,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=5282, Unknown=0, NotChecked=0, Total=5550 [2020-07-21 12:58:36,247 INFO L87 Difference]: Start difference. First operand 161 states and 218 transitions. Second operand 75 states. [2020-07-21 12:58:36,821 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 49 [2020-07-21 12:58:37,073 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 46 [2020-07-21 12:58:37,328 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 47 [2020-07-21 12:58:37,547 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 43 [2020-07-21 12:58:37,790 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 44 [2020-07-21 12:58:38,002 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 40 [2020-07-21 12:58:38,241 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 41 [2020-07-21 12:58:38,449 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 37 [2020-07-21 12:58:38,745 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 38 [2020-07-21 12:58:38,934 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 34 [2020-07-21 12:58:39,210 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 35 [2020-07-21 12:58:39,416 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 31 [2020-07-21 12:58:39,664 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 32 [2020-07-21 12:58:39,838 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 28 [2020-07-21 12:58:40,089 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 29 [2020-07-21 12:58:42,690 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 45 [2020-07-21 12:58:43,071 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 42 [2020-07-21 12:58:43,430 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 39 [2020-07-21 12:58:43,760 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 36 [2020-07-21 12:58:44,082 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 33 [2020-07-21 12:58:44,389 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 30 [2020-07-21 12:58:44,700 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 26 [2020-07-21 12:58:46,713 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 44 [2020-07-21 12:58:47,083 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 46 [2020-07-21 12:58:47,438 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 42 [2020-07-21 12:58:47,793 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 43 [2020-07-21 12:58:48,117 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 39 [2020-07-21 12:58:48,444 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 40 [2020-07-21 12:58:48,738 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 36 [2020-07-21 12:58:49,043 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 38 [2020-07-21 12:58:49,338 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 33 [2020-07-21 12:58:49,626 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-07-21 12:58:49,896 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 30 [2020-07-21 12:58:50,183 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 32 [2020-07-21 12:58:50,427 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 26 [2020-07-21 12:58:50,692 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 29 [2020-07-21 12:58:51,162 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 26 [2020-07-21 12:58:51,606 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 23 [2020-07-21 12:58:54,220 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 47 [2020-07-21 12:58:54,620 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 50 [2020-07-21 12:58:55,021 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 44 [2020-07-21 12:58:55,418 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 47 [2020-07-21 12:58:55,768 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 41 [2020-07-21 12:58:56,141 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 44 [2020-07-21 12:58:56,478 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 38 [2020-07-21 12:58:56,825 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 41 [2020-07-21 12:58:57,141 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 35 [2020-07-21 12:58:57,465 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 38 [2020-07-21 12:58:57,760 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 32 [2020-07-21 12:58:58,067 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 35 [2020-07-21 12:58:58,346 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 30 [2020-07-21 12:58:58,639 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 32 [2020-07-21 12:58:59,106 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2020-07-21 12:58:59,521 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 27 [2020-07-21 12:59:00,807 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2020-07-21 12:59:01,193 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 26 [2020-07-21 12:59:01,991 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 32 [2020-07-21 12:59:02,555 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 29 [2020-07-21 12:59:04,366 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 38 [2020-07-21 12:59:04,722 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 35 [2020-07-21 12:59:05,099 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 47 [2020-07-21 12:59:05,474 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 44 [2020-07-21 12:59:05,837 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2020-07-21 12:59:06,323 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 50 [2020-07-21 12:59:06,981 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 32 [2020-07-21 12:59:07,403 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 50 [2020-07-21 12:59:07,642 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 7 [2020-07-21 12:59:08,419 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 47 [2020-07-21 12:59:08,768 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-07-21 12:59:09,142 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 41 [2020-07-21 12:59:09,462 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 38 [2020-07-21 12:59:10,022 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 26 [2020-07-21 12:59:10,730 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 23 [2020-07-21 12:59:11,448 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 35 [2020-07-21 12:59:13,647 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 9 [2020-07-21 12:59:13,920 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 9 [2020-07-21 12:59:14,481 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 38 [2020-07-21 12:59:15,097 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 35 [2020-07-21 12:59:15,402 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 29 [2020-07-21 12:59:15,938 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 44 [2020-07-21 12:59:16,280 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 41 [2020-07-21 12:59:17,226 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 32 [2020-07-21 12:59:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:59:17,287 INFO L93 Difference]: Finished difference Result 528 states and 796 transitions. [2020-07-21 12:59:17,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2020-07-21 12:59:17,288 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 188 [2020-07-21 12:59:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:59:17,295 INFO L225 Difference]: With dead ends: 528 [2020-07-21 12:59:17,295 INFO L226 Difference]: Without dead ends: 524 [2020-07-21 12:59:17,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 262 SyntacticMatches, 42 SemanticMatches, 233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16705 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=8020, Invalid=46970, Unknown=0, NotChecked=0, Total=54990 [2020-07-21 12:59:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-07-21 12:59:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 441. [2020-07-21 12:59:17,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2020-07-21 12:59:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 635 transitions. [2020-07-21 12:59:17,356 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 635 transitions. Word has length 188 [2020-07-21 12:59:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:59:17,357 INFO L479 AbstractCegarLoop]: Abstraction has 441 states and 635 transitions. [2020-07-21 12:59:17,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-07-21 12:59:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 635 transitions. [2020-07-21 12:59:17,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-07-21 12:59:17,362 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:59:17,362 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 16, 15, 15, 15, 15, 15, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:59:17,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:59:17,576 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:59:17,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:59:17,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1322769943, now seen corresponding path program 11 times [2020-07-21 12:59:17,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:59:17,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027266452] [2020-07-21 12:59:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:59:17,785 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:59:17,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:59:17,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 858 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 12:59:17,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:59:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 115 proven. 415 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2020-07-21 12:59:17,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:59:18,523 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:18,524 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:18,678 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:18,679 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:18,774 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:18,774 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:18,832 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:18,833 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:19,775 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:20,015 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:20,016 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:20,135 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:20,136 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:20,197 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:20,197 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:20,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 115 proven. 447 refuted. 0 times theorem prover too weak. 1560 trivial. 0 not checked. [2020-07-21 12:59:20,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1027266452] [2020-07-21 12:59:20,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:59:20,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 25 [2020-07-21 12:59:20,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906437975] [2020-07-21 12:59:20,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 12:59:20,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:59:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 12:59:20,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2020-07-21 12:59:20,259 INFO L87 Difference]: Start difference. First operand 441 states and 635 transitions. Second operand 25 states. [2020-07-21 12:59:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:59:20,728 INFO L93 Difference]: Finished difference Result 502 states and 783 transitions. [2020-07-21 12:59:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 12:59:20,729 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 194 [2020-07-21 12:59:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:59:20,735 INFO L225 Difference]: With dead ends: 502 [2020-07-21 12:59:20,735 INFO L226 Difference]: Without dead ends: 478 [2020-07-21 12:59:20,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 343 SyntacticMatches, 21 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=237, Invalid=953, Unknown=0, NotChecked=0, Total=1190 [2020-07-21 12:59:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2020-07-21 12:59:20,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 427. [2020-07-21 12:59:20,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2020-07-21 12:59:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 618 transitions. [2020-07-21 12:59:20,796 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 618 transitions. Word has length 194 [2020-07-21 12:59:20,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:59:20,797 INFO L479 AbstractCegarLoop]: Abstraction has 427 states and 618 transitions. [2020-07-21 12:59:20,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 12:59:20,797 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 618 transitions. [2020-07-21 12:59:20,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-07-21 12:59:20,806 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:59:20,807 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:59:21,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:59:21,020 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:59:21,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:59:21,020 INFO L82 PathProgramCache]: Analyzing trace with hash -547968693, now seen corresponding path program 12 times [2020-07-21 12:59:21,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:59:21,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908984900] [2020-07-21 12:59:21,021 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:59:21,336 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:59:21,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:59:21,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 22 conjunts are in the unsatisfiable core [2020-07-21 12:59:21,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:59:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 254 proven. 1087 refuted. 0 times theorem prover too weak. 7431 trivial. 0 not checked. [2020-07-21 12:59:21,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:59:22,111 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:22,214 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:22,271 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:24,186 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:24,187 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:24,672 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:24,937 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:25,058 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:25,059 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:25,117 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:25,118 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 12:59:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8772 backedges. 254 proven. 1121 refuted. 0 times theorem prover too weak. 7397 trivial. 0 not checked. [2020-07-21 12:59:25,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908984900] [2020-07-21 12:59:25,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:59:25,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23] total 25 [2020-07-21 12:59:25,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950548366] [2020-07-21 12:59:25,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 12:59:25,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:59:25,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 12:59:25,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2020-07-21 12:59:25,243 INFO L87 Difference]: Start difference. First operand 427 states and 618 transitions. Second operand 25 states. [2020-07-21 12:59:25,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 12:59:25,748 INFO L93 Difference]: Finished difference Result 478 states and 724 transitions. [2020-07-21 12:59:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 12:59:25,749 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 348 [2020-07-21 12:59:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 12:59:25,755 INFO L225 Difference]: With dead ends: 478 [2020-07-21 12:59:25,755 INFO L226 Difference]: Without dead ends: 443 [2020-07-21 12:59:25,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 651 SyntacticMatches, 21 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=243, Invalid=947, Unknown=0, NotChecked=0, Total=1190 [2020-07-21 12:59:25,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2020-07-21 12:59:25,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 394. [2020-07-21 12:59:25,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-07-21 12:59:25,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 572 transitions. [2020-07-21 12:59:25,796 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 572 transitions. Word has length 348 [2020-07-21 12:59:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 12:59:25,797 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 572 transitions. [2020-07-21 12:59:25,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 12:59:25,797 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 572 transitions. [2020-07-21 12:59:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-07-21 12:59:25,802 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 12:59:25,802 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 12:59:26,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:59:26,016 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 12:59:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 12:59:26,017 INFO L82 PathProgramCache]: Analyzing trace with hash -604098025, now seen corresponding path program 13 times [2020-07-21 12:59:26,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 12:59:26,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830878405] [2020-07-21 12:59:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 12:59:26,362 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 12:59:26,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 12:59:26,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 339 conjunts are in the unsatisfiable core [2020-07-21 12:59:26,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 12:59:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 2940 refuted. 0 times theorem prover too weak. 5854 trivial. 0 not checked. [2020-07-21 12:59:27,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 12:59:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8794 backedges. 0 proven. 8644 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-07-21 12:59:44,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830878405] [2020-07-21 12:59:44,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 12:59:44,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 108] total 129 [2020-07-21 12:59:44,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984950759] [2020-07-21 12:59:44,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 129 states [2020-07-21 12:59:44,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 12:59:44,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2020-07-21 12:59:44,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=16060, Unknown=0, NotChecked=0, Total=16512 [2020-07-21 12:59:44,197 INFO L87 Difference]: Start difference. First operand 394 states and 572 transitions. Second operand 129 states. [2020-07-21 12:59:44,771 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 6 [2020-07-21 12:59:45,734 WARN L193 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 97 [2020-07-21 12:59:46,445 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 94 [2020-07-21 12:59:47,244 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 95 [2020-07-21 12:59:47,917 WARN L193 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 91 [2020-07-21 12:59:48,671 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 92 [2020-07-21 12:59:49,349 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 88 [2020-07-21 12:59:50,071 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 89 [2020-07-21 12:59:50,714 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 85 [2020-07-21 12:59:51,411 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 209 DAG size of output: 86 [2020-07-21 12:59:52,029 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 82 [2020-07-21 12:59:52,734 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 83 [2020-07-21 12:59:53,340 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 79 [2020-07-21 12:59:54,094 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 80 [2020-07-21 12:59:54,683 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 76 [2020-07-21 12:59:55,462 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 77 [2020-07-21 12:59:56,045 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 73 [2020-07-21 12:59:56,817 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 74 [2020-07-21 12:59:57,390 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 70 [2020-07-21 12:59:58,109 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 71 [2020-07-21 12:59:58,627 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 67 [2020-07-21 12:59:59,298 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 68 [2020-07-21 12:59:59,822 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 64 [2020-07-21 13:00:00,481 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 65 [2020-07-21 13:00:01,017 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 61 [2020-07-21 13:00:01,649 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 62 [2020-07-21 13:00:02,129 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 58 [2020-07-21 13:00:02,766 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 59 [2020-07-21 13:00:03,217 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 55 [2020-07-21 13:00:03,823 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 56 [2020-07-21 13:00:04,285 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 52 [2020-07-21 13:00:04,869 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 53 [2020-07-21 13:00:05,300 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 49 [2020-07-21 13:00:05,896 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 50 [2020-07-21 13:00:06,313 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 46 [2020-07-21 13:00:06,844 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 47 [2020-07-21 13:00:07,233 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 43 [2020-07-21 13:00:07,741 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 44 [2020-07-21 13:00:08,098 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 40 [2020-07-21 13:00:08,588 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 41 [2020-07-21 13:00:08,935 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 37 [2020-07-21 13:00:09,426 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 38 [2020-07-21 13:00:09,738 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 34 [2020-07-21 13:00:10,193 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 35 [2020-07-21 13:00:10,530 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 31 [2020-07-21 13:00:10,965 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 32 [2020-07-21 13:00:11,252 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 28 [2020-07-21 13:00:11,673 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 29 [2020-07-21 13:00:11,949 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 25 [2020-07-21 13:00:12,334 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 26 [2020-07-21 13:00:16,832 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 89 [2020-07-21 13:00:17,930 WARN L193 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 86 [2020-07-21 13:00:19,018 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 83 [2020-07-21 13:00:20,080 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 80 [2020-07-21 13:00:21,089 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 77 [2020-07-21 13:00:22,066 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 74 [2020-07-21 13:00:23,027 WARN L193 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 71 [2020-07-21 13:00:23,966 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 68 [2020-07-21 13:00:24,862 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 65 [2020-07-21 13:00:25,735 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 62 [2020-07-21 13:00:26,582 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 59 [2020-07-21 13:00:27,385 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 56 [2020-07-21 13:00:28,209 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 53 [2020-07-21 13:00:28,972 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 51 [2020-07-21 13:00:29,699 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 48 [2020-07-21 13:00:30,385 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 45 [2020-07-21 13:00:31,043 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 42 [2020-07-21 13:00:31,683 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 39 [2020-07-21 13:00:32,286 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 36 [2020-07-21 13:00:32,844 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2020-07-21 13:00:33,406 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 30 [2020-07-21 13:00:33,959 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 27 [2020-07-21 13:00:34,458 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 24 [2020-07-21 13:00:38,219 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 89 [2020-07-21 13:00:39,373 WARN L193 SmtUtils]: Spent 968.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 91 [2020-07-21 13:00:40,469 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 86 [2020-07-21 13:00:41,571 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 88 [2020-07-21 13:00:42,637 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 83 [2020-07-21 13:00:43,713 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 86 [2020-07-21 13:00:44,756 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 80 [2020-07-21 13:00:45,800 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 83 [2020-07-21 13:00:46,809 WARN L193 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 77 [2020-07-21 13:00:47,820 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 80 [2020-07-21 13:00:48,801 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 74 [2020-07-21 13:00:49,788 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 77 [2020-07-21 13:00:50,718 WARN L193 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 71 [2020-07-21 13:00:51,686 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 74 [2020-07-21 13:00:52,572 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 68 [2020-07-21 13:00:53,499 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 71 [2020-07-21 13:00:54,379 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 65 [2020-07-21 13:00:55,263 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 68 [2020-07-21 13:00:56,104 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 62 [2020-07-21 13:00:56,981 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 65 [2020-07-21 13:00:57,810 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 59 [2020-07-21 13:00:58,669 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 62 [2020-07-21 13:00:59,449 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 56 [2020-07-21 13:01:00,271 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 59 [2020-07-21 13:01:01,038 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 53 [2020-07-21 13:01:01,841 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 56 [2020-07-21 13:01:02,596 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 51 [2020-07-21 13:01:03,370 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 53 [2020-07-21 13:01:04,087 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 48 [2020-07-21 13:01:04,825 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 50 [2020-07-21 13:01:05,505 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 45 [2020-07-21 13:01:06,191 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 47 [2020-07-21 13:01:06,839 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 42 [2020-07-21 13:01:07,484 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 44 [2020-07-21 13:01:08,106 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 39 [2020-07-21 13:01:08,747 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 41 [2020-07-21 13:01:09,353 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 36 [2020-07-21 13:01:09,958 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 38 [2020-07-21 13:01:10,522 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 33 [2020-07-21 13:01:11,101 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 35 [2020-07-21 13:01:11,633 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 30 [2020-07-21 13:01:12,175 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 32 [2020-07-21 13:01:12,691 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 27 [2020-07-21 13:01:13,195 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 29 [2020-07-21 13:01:13,660 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 24 [2020-07-21 13:01:14,134 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 26 [2020-07-21 13:01:14,584 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 21 [2020-07-21 13:01:15,044 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 23 [2020-07-21 13:01:15,912 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 20 [2020-07-21 13:01:18,743 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2020-07-21 13:01:20,720 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 249 DAG size of output: 91 [2020-07-21 13:01:22,062 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 259 DAG size of output: 94 [2020-07-21 13:01:23,337 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 242 DAG size of output: 88 [2020-07-21 13:01:24,587 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 251 DAG size of output: 91 [2020-07-21 13:01:25,805 WARN L193 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 85 [2020-07-21 13:01:27,028 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 244 DAG size of output: 88 [2020-07-21 13:01:28,238 WARN L193 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 82 [2020-07-21 13:01:29,424 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 85 [2020-07-21 13:01:30,591 WARN L193 SmtUtils]: Spent 886.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 79 [2020-07-21 13:01:31,760 WARN L193 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 82 [2020-07-21 13:01:32,896 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 77 [2020-07-21 13:01:34,022 WARN L193 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 79 [2020-07-21 13:01:35,134 WARN L193 SmtUtils]: Spent 808.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 74 [2020-07-21 13:01:36,234 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 76 [2020-07-21 13:01:37,314 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 71 [2020-07-21 13:01:38,397 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 74 [2020-07-21 13:01:39,431 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 68 [2020-07-21 13:01:40,482 WARN L193 SmtUtils]: Spent 771.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 71 [2020-07-21 13:01:41,483 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 65 [2020-07-21 13:01:42,483 WARN L193 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 68 [2020-07-21 13:01:43,448 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 62 [2020-07-21 13:01:44,431 WARN L193 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 65 [2020-07-21 13:01:45,357 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 59 [2020-07-21 13:01:46,310 WARN L193 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 62 [2020-07-21 13:01:47,229 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 56 [2020-07-21 13:01:48,144 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 59 [2020-07-21 13:01:49,036 WARN L193 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 53 [2020-07-21 13:01:49,944 WARN L193 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 56 [2020-07-21 13:01:50,787 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 50 [2020-07-21 13:01:51,638 WARN L193 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 53 [2020-07-21 13:01:52,430 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 47 [2020-07-21 13:01:53,271 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 50 [2020-07-21 13:01:54,042 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 44 [2020-07-21 13:01:54,837 WARN L193 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 47 [2020-07-21 13:01:55,574 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 41 [2020-07-21 13:01:56,335 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 44 [2020-07-21 13:01:57,031 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 38 [2020-07-21 13:01:57,756 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 41 [2020-07-21 13:01:58,423 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 35 [2020-07-21 13:01:59,116 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 38 [2020-07-21 13:01:59,755 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 32 [2020-07-21 13:02:00,438 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 35 [2020-07-21 13:02:01,050 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 29 [2020-07-21 13:02:01,677 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 32 [2020-07-21 13:02:02,179 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-07-21 13:02:02,704 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-07-21 13:02:03,163 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2020-07-21 13:02:03,665 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-07-21 13:02:06,173 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2020-07-21 13:02:06,619 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-07-21 13:02:07,050 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2020-07-21 13:02:07,558 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-07-21 13:02:07,942 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 21 [2020-07-21 13:02:08,359 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 24 [2020-07-21 13:02:08,844 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-07-21 13:02:09,293 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 27 [2020-07-21 13:02:09,855 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2020-07-21 13:02:12,940 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 38 [2020-07-21 13:02:14,258 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 20 [2020-07-21 13:02:15,059 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 26 [2020-07-21 13:02:17,384 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 23 [2020-07-21 13:02:18,272 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 29 [2020-07-21 13:02:19,332 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 32 [2020-07-21 13:02:20,950 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 41 [2020-07-21 13:02:22,115 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 62 [2020-07-21 13:02:23,310 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2020-07-21 13:02:24,353 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 50 [2020-07-21 13:02:25,614 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 47 [2020-07-21 13:02:26,804 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 53 [2020-07-21 13:02:27,701 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 35 [2020-07-21 13:02:28,852 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 56 [2020-07-21 13:02:30,232 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 65 [2020-07-21 13:02:31,657 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 197 DAG size of output: 86 [2020-07-21 13:02:33,112 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 68 [2020-07-21 13:02:34,495 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 74 [2020-07-21 13:02:35,836 WARN L193 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 71 [2020-07-21 13:02:37,286 WARN L193 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 77 [2020-07-21 13:02:38,409 WARN L193 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 59 [2020-07-21 13:02:39,766 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 80 [2020-07-21 13:02:41,190 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 203 DAG size of output: 89 [2020-07-21 13:02:42,865 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 211 DAG size of output: 92 [2020-07-21 13:02:44,485 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 220 DAG size of output: 95 [2020-07-21 13:02:45,928 WARN L193 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 83 [2020-07-21 13:02:47,692 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 229 DAG size of output: 98 [2020-07-21 13:02:48,609 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 33 [2020-07-21 13:02:49,232 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2020-07-21 13:02:51,082 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 259 DAG size of output: 94 [2020-07-21 13:02:52,823 WARN L193 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 268 DAG size of output: 97 [2020-07-21 13:02:54,565 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 251 DAG size of output: 91 [2020-07-21 13:02:56,243 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 260 DAG size of output: 94 [2020-07-21 13:02:57,829 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 244 DAG size of output: 88 [2020-07-21 13:02:59,489 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 252 DAG size of output: 91 [2020-07-21 13:03:01,123 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 239 DAG size of output: 85 [2020-07-21 13:03:02,712 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 245 DAG size of output: 88 [2020-07-21 13:03:04,374 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 232 DAG size of output: 82 [2020-07-21 13:03:05,996 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 240 DAG size of output: 85 [2020-07-21 13:03:07,551 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 224 DAG size of output: 79 [2020-07-21 13:03:09,121 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 233 DAG size of output: 82 [2020-07-21 13:03:10,651 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 219 DAG size of output: 76 [2020-07-21 13:03:12,186 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 225 DAG size of output: 79 [2020-07-21 13:03:13,637 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 213 DAG size of output: 73 [2020-07-21 13:03:15,112 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 220 DAG size of output: 76 [2020-07-21 13:03:16,565 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 204 DAG size of output: 70 [2020-07-21 13:03:18,007 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 214 DAG size of output: 73 [2020-07-21 13:03:19,696 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 258 DAG size of output: 95 [2020-07-21 13:03:21,476 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 266 DAG size of output: 98 [2020-07-21 13:03:22,879 WARN L193 SmtUtils]: Spent 926.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 67 [2020-07-21 13:03:24,286 WARN L193 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 70 [2020-07-21 13:03:25,961 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 250 DAG size of output: 92 [2020-07-21 13:03:27,358 WARN L193 SmtUtils]: Spent 908.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 64 [2020-07-21 13:03:28,713 WARN L193 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 67 [2020-07-21 13:03:30,396 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 243 DAG size of output: 89 [2020-07-21 13:03:31,721 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 61 [2020-07-21 13:03:33,046 WARN L193 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 64 [2020-07-21 13:03:34,722 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 238 DAG size of output: 86 [2020-07-21 13:03:36,119 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 58 [2020-07-21 13:03:37,452 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 61 [2020-07-21 13:03:39,300 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 231 DAG size of output: 83 [2020-07-21 13:03:40,668 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 55 [2020-07-21 13:03:41,983 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 58 [2020-07-21 13:03:43,722 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 223 DAG size of output: 80 [2020-07-21 13:03:45,103 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 53 [2020-07-21 13:03:46,331 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 55 [2020-07-21 13:03:48,102 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 218 DAG size of output: 77 [2020-07-21 13:03:49,190 WARN L193 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 51 [2020-07-21 13:03:50,292 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 53 [2020-07-21 13:03:51,617 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 48 [2020-07-21 13:03:52,661 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 51 [2020-07-21 13:03:53,663 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 45 [2020-07-21 13:03:54,662 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 48 [2020-07-21 13:03:55,915 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 42 [2020-07-21 13:03:56,880 WARN L193 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 45 [2020-07-21 13:03:57,816 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 39 [2020-07-21 13:03:58,724 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 42 [2020-07-21 13:04:00,377 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2020-07-21 13:04:01,243 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 39 [2020-07-21 13:04:02,682 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 26 [2020-07-21 13:04:03,206 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 20 [2020-07-21 13:04:03,908 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2020-07-21 13:04:04,485 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 23 [2020-07-21 13:04:05,143 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 29 [2020-07-21 13:04:10,034 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 53 [2020-07-21 13:04:11,858 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2020-07-21 13:04:13,153 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 26 [2020-07-21 13:04:14,759 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 200 DAG size of output: 83 [2020-07-21 13:04:16,870 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 62 [2020-07-21 13:04:18,393 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 65 [2020-07-21 13:04:19,567 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 29 [2020-07-21 13:04:21,134 WARN L193 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 71 [2020-07-21 13:04:22,707 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 68 [2020-07-21 13:04:24,513 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 179 DAG size of output: 74 [2020-07-21 13:04:25,989 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 59 [2020-07-21 13:04:27,860 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 187 DAG size of output: 77 [2020-07-21 13:04:29,152 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 38 [2020-07-21 13:04:30,810 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 208 DAG size of output: 86 [2020-07-21 13:04:32,143 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 41 [2020-07-21 13:04:33,909 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 217 DAG size of output: 89 [2020-07-21 13:04:35,359 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 35 [2020-07-21 13:04:36,782 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 47 [2020-07-21 13:04:37,737 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 14 [2020-07-21 13:04:39,101 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 17 [2020-07-21 13:04:40,505 WARN L193 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44 [2020-07-21 13:04:42,034 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2020-07-21 13:04:43,486 WARN L193 SmtUtils]: Spent 629.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 50 [2020-07-21 13:04:52,906 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 226 DAG size of output: 92 [2020-07-21 13:04:55,214 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 41 [2020-07-21 13:04:59,303 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 53 [2020-07-21 13:05:00,946 WARN L193 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 50 [2020-07-21 13:05:02,118 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 14 [2020-07-21 13:05:03,201 WARN L193 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 47 [2020-07-21 13:05:04,165 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 17 [2020-07-21 13:05:05,015 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 35 [2020-07-21 13:05:06,381 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 44 [2020-07-21 13:05:22,812 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 231 DAG size of output: 98 [2020-07-21 13:05:23,917 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 7 [2020-07-21 13:05:24,679 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 6 [2020-07-21 13:05:25,410 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 9 [2020-07-21 13:05:27,839 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 222 DAG size of output: 95 [2020-07-21 13:05:30,071 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 213 DAG size of output: 92 [2020-07-21 13:05:32,155 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 205 DAG size of output: 89 [2020-07-21 13:05:34,507 WARN L193 SmtUtils]: Spent 1.52 s on a formula simplification. DAG size of input: 199 DAG size of output: 86 [2020-07-21 13:05:36,554 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 192 DAG size of output: 83 [2020-07-21 13:05:38,754 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 184 DAG size of output: 80 [2020-07-21 13:05:40,920 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 178 DAG size of output: 77 [2020-07-21 13:05:43,036 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 171 DAG size of output: 74 [2020-07-21 13:05:47,076 WARN L193 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 56 [2020-07-21 13:05:49,319 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 162 DAG size of output: 71 [2020-07-21 13:05:51,284 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 154 DAG size of output: 68 [2020-07-21 13:05:53,426 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 148 DAG size of output: 65 [2020-07-21 13:05:55,097 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 141 DAG size of output: 62 [2020-07-21 13:05:57,000 WARN L193 SmtUtils]: Spent 934.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 59 [2020-07-21 13:06:00,029 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 194 DAG size of output: 80 [2020-07-21 13:06:01,361 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2020-07-21 13:06:03,123 WARN L193 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 56 [2020-07-21 13:06:05,356 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 38 [2020-07-21 13:06:12,551 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 9 [2020-07-21 13:06:13,346 WARN L193 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 9 [2020-07-21 13:06:14,232 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 9 [2020-07-21 13:06:15,035 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 9 [2020-07-21 13:06:15,916 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 9 [2020-07-21 13:06:16,731 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 9 [2020-07-21 13:06:17,623 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 9 [2020-07-21 13:06:18,426 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 8 [2020-07-21 13:06:19,720 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 9 [2020-07-21 13:06:21,043 WARN L193 SmtUtils]: Spent 872.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 9 [2020-07-21 13:06:21,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:06:21,366 INFO L93 Difference]: Finished difference Result 1231 states and 2149 transitions. [2020-07-21 13:06:21,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 402 states. [2020-07-21 13:06:21,370 INFO L78 Accepts]: Start accepts. Automaton has 129 states. Word has length 354 [2020-07-21 13:06:21,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:06:21,384 INFO L225 Difference]: With dead ends: 1231 [2020-07-21 13:06:21,385 INFO L226 Difference]: Without dead ends: 1227 [2020-07-21 13:06:21,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1097 GetRequests, 516 SyntacticMatches, 66 SemanticMatches, 515 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88090 ImplicationChecksByTransitivity, 313.9s TimeCoverageRelationStatistics Valid=38389, Invalid=228383, Unknown=0, NotChecked=0, Total=266772 [2020-07-21 13:06:21,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2020-07-21 13:06:21,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1036. [2020-07-21 13:06:21,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2020-07-21 13:06:21,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1613 transitions. [2020-07-21 13:06:21,577 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1613 transitions. Word has length 354 [2020-07-21 13:06:21,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:06:21,578 INFO L479 AbstractCegarLoop]: Abstraction has 1036 states and 1613 transitions. [2020-07-21 13:06:21,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 129 states. [2020-07-21 13:06:21,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1613 transitions. [2020-07-21 13:06:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-07-21 13:06:21,594 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:06:21,595 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 32, 31, 31, 31, 31, 31, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:06:21,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:06:21,809 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:06:21,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:06:21,809 INFO L82 PathProgramCache]: Analyzing trace with hash 800684683, now seen corresponding path program 14 times [2020-07-21 13:06:21,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:06:21,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807619168] [2020-07-21 13:06:21,810 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:06:22,161 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:06:22,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:06:22,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1656 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 13:06:22,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:06:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8822 backedges. 254 proven. 1112 refuted. 0 times theorem prover too weak. 7456 trivial. 0 not checked. [2020-07-21 13:06:23,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:06:25,384 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:25,385 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:26,032 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:26,033 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:26,477 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:26,766 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:26,947 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:32,486 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:34,073 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:34,074 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:34,849 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:35,226 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:35,410 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:35,411 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:35,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8822 backedges. 254 proven. 1162 refuted. 0 times theorem prover too weak. 7406 trivial. 0 not checked. [2020-07-21 13:06:35,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807619168] [2020-07-21 13:06:35,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:06:35,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 29 [2020-07-21 13:06:35,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94662849] [2020-07-21 13:06:35,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-21 13:06:35,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:06:35,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-21 13:06:35,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2020-07-21 13:06:35,612 INFO L87 Difference]: Start difference. First operand 1036 states and 1613 transitions. Second operand 29 states. [2020-07-21 13:06:37,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:06:37,096 INFO L93 Difference]: Finished difference Result 1221 states and 2313 transitions. [2020-07-21 13:06:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 13:06:37,114 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 360 [2020-07-21 13:06:37,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:06:37,127 INFO L225 Difference]: With dead ends: 1221 [2020-07-21 13:06:37,127 INFO L226 Difference]: Without dead ends: 1194 [2020-07-21 13:06:37,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 667 SyntacticMatches, 25 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=319, Invalid=1321, Unknown=0, NotChecked=0, Total=1640 [2020-07-21 13:06:37,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-07-21 13:06:37,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1024. [2020-07-21 13:06:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-07-21 13:06:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1655 transitions. [2020-07-21 13:06:37,287 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1655 transitions. Word has length 360 [2020-07-21 13:06:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:06:37,287 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1655 transitions. [2020-07-21 13:06:37,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-21 13:06:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1655 transitions. [2020-07-21 13:06:37,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-07-21 13:06:37,298 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:06:37,299 INFO L422 BasicCegarLoop]: trace histogram [79, 79, 40, 39, 39, 39, 39, 39, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:06:37,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:06:37,513 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:06:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:06:37,514 INFO L82 PathProgramCache]: Analyzing trace with hash 548363287, now seen corresponding path program 15 times [2020-07-21 13:06:37,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:06:37,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220302754] [2020-07-21 13:06:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:06:37,970 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:06:37,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:06:37,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 2034 conjuncts, 24 conjunts are in the unsatisfiable core [2020-07-21 13:06:37,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:06:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 13858 backedges. 1076 proven. 2067 refuted. 0 times theorem prover too weak. 10715 trivial. 0 not checked. [2020-07-21 13:06:38,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:06:45,586 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:47,139 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:47,879 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:47,880 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:48,254 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:48,436 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:51,332 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:52,108 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:52,490 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:52,491 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:52,669 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:52,670 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 13858 backedges. 1076 proven. 2108 refuted. 0 times theorem prover too weak. 10674 trivial. 0 not checked. [2020-07-21 13:06:52,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220302754] [2020-07-21 13:06:52,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:06:52,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25] total 27 [2020-07-21 13:06:52,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618669518] [2020-07-21 13:06:52,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-21 13:06:52,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:06:52,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-21 13:06:52,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2020-07-21 13:06:52,883 INFO L87 Difference]: Start difference. First operand 1024 states and 1655 transitions. Second operand 27 states. [2020-07-21 13:06:55,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:06:55,408 INFO L93 Difference]: Finished difference Result 2084 states and 3744 transitions. [2020-07-21 13:06:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-21 13:06:55,414 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 434 [2020-07-21 13:06:55,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:06:55,432 INFO L225 Difference]: With dead ends: 2084 [2020-07-21 13:06:55,432 INFO L226 Difference]: Without dead ends: 1310 [2020-07-21 13:06:55,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 819 SyntacticMatches, 23 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=504, Invalid=1476, Unknown=0, NotChecked=0, Total=1980 [2020-07-21 13:06:55,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2020-07-21 13:06:55,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 981. [2020-07-21 13:06:55,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 981 states. [2020-07-21 13:06:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1359 transitions. [2020-07-21 13:06:55,587 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1359 transitions. Word has length 434 [2020-07-21 13:06:55,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:06:55,587 INFO L479 AbstractCegarLoop]: Abstraction has 981 states and 1359 transitions. [2020-07-21 13:06:55,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-21 13:06:55,588 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1359 transitions. [2020-07-21 13:06:55,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 675 [2020-07-21 13:06:55,603 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:06:55,604 INFO L422 BasicCegarLoop]: trace histogram [127, 127, 64, 63, 63, 63, 63, 63, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:06:55,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:06:55,818 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:06:55,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:06:55,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2099436055, now seen corresponding path program 16 times [2020-07-21 13:06:55,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:06:55,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442012845] [2020-07-21 13:06:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:06:56,498 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:06:56,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:06:56,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 3210 conjuncts, 26 conjunts are in the unsatisfiable core [2020-07-21 13:06:56,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:06:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 35962 backedges. 537 proven. 2750 refuted. 0 times theorem prover too weak. 32675 trivial. 0 not checked. [2020-07-21 13:06:57,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:06:58,785 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:58,786 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:59,228 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:59,228 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:59,609 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:59,610 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:06:59,783 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:07:10,734 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:07:14,042 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:07:15,594 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:07:16,377 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:07:16,378 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:07:16,775 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:07:16,776 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:07:16,961 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:07:16,962 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 13:07:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 35962 backedges. 537 proven. 2802 refuted. 0 times theorem prover too weak. 32623 trivial. 0 not checked. [2020-07-21 13:07:17,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442012845] [2020-07-21 13:07:17,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:07:17,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 29 [2020-07-21 13:07:17,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114862238] [2020-07-21 13:07:17,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-21 13:07:17,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:07:17,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-21 13:07:17,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2020-07-21 13:07:17,279 INFO L87 Difference]: Start difference. First operand 981 states and 1359 transitions. Second operand 29 states. [2020-07-21 13:07:18,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:07:18,881 INFO L93 Difference]: Finished difference Result 1043 states and 1420 transitions. [2020-07-21 13:07:18,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 13:07:18,886 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 674 [2020-07-21 13:07:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:07:18,894 INFO L225 Difference]: With dead ends: 1043 [2020-07-21 13:07:18,895 INFO L226 Difference]: Without dead ends: 1036 [2020-07-21 13:07:18,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 1295 SyntacticMatches, 25 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=325, Invalid=1315, Unknown=0, NotChecked=0, Total=1640 [2020-07-21 13:07:18,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-07-21 13:07:19,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 978. [2020-07-21 13:07:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-07-21 13:07:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1353 transitions. [2020-07-21 13:07:19,007 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1353 transitions. Word has length 674 [2020-07-21 13:07:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:07:19,009 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1353 transitions. [2020-07-21 13:07:19,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-21 13:07:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1353 transitions. [2020-07-21 13:07:19,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2020-07-21 13:07:19,020 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:07:19,021 INFO L422 BasicCegarLoop]: trace histogram [127, 127, 64, 63, 63, 63, 63, 63, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:07:19,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:07:19,236 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:07:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:07:19,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2092966539, now seen corresponding path program 17 times [2020-07-21 13:07:19,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:07:19,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789558129] [2020-07-21 13:07:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:07:19,900 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:07:19,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:07:19,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 663 conjunts are in the unsatisfiable core [2020-07-21 13:07:19,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:07:23,332 INFO L134 CoverageAnalysis]: Checked inductivity of 35990 backedges. 0 proven. 12010 refuted. 0 times theorem prover too weak. 23980 trivial. 0 not checked. [2020-07-21 13:07:23,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 13:09:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 35990 backedges. 0 proven. 35698 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-07-21 13:09:35,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789558129] [2020-07-21 13:09:35,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 13:09:35,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 206] total 231 [2020-07-21 13:09:35,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856512729] [2020-07-21 13:09:35,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 231 states [2020-07-21 13:09:35,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:09:35,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 231 interpolants. [2020-07-21 13:09:35,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=52346, Unknown=0, NotChecked=0, Total=53130 [2020-07-21 13:09:35,013 INFO L87 Difference]: Start difference. First operand 978 states and 1353 transitions. Second operand 231 states. [2020-07-21 13:09:37,703 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 377 DAG size of output: 6 [2020-07-21 13:09:43,514 WARN L193 SmtUtils]: Spent 4.74 s on a formula simplification. DAG size of input: 440 DAG size of output: 193 [2020-07-21 13:09:48,188 WARN L193 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 414 DAG size of output: 190 [2020-07-21 13:09:53,374 WARN L193 SmtUtils]: Spent 4.73 s on a formula simplification. DAG size of input: 434 DAG size of output: 191 [2020-07-21 13:09:58,082 WARN L193 SmtUtils]: Spent 4.22 s on a formula simplification. DAG size of input: 408 DAG size of output: 187 [2020-07-21 13:10:03,453 WARN L193 SmtUtils]: Spent 4.90 s on a formula simplification. DAG size of input: 428 DAG size of output: 188 [2020-07-21 13:10:07,617 WARN L193 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 402 DAG size of output: 184 [2020-07-21 13:10:12,838 WARN L193 SmtUtils]: Spent 4.74 s on a formula simplification. DAG size of input: 422 DAG size of output: 185 [2020-07-21 13:10:17,309 WARN L193 SmtUtils]: Spent 3.96 s on a formula simplification. DAG size of input: 396 DAG size of output: 181 [2020-07-21 13:10:22,765 WARN L193 SmtUtils]: Spent 4.95 s on a formula simplification. DAG size of input: 416 DAG size of output: 182 [2020-07-21 13:10:26,869 WARN L193 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 391 DAG size of output: 178 [2020-07-21 13:10:32,070 WARN L193 SmtUtils]: Spent 4.70 s on a formula simplification. DAG size of input: 411 DAG size of output: 179 [2020-07-21 13:10:36,520 WARN L193 SmtUtils]: Spent 3.91 s on a formula simplification. DAG size of input: 386 DAG size of output: 175 [2020-07-21 13:10:41,532 WARN L193 SmtUtils]: Spent 4.47 s on a formula simplification. DAG size of input: 406 DAG size of output: 176 [2020-07-21 13:10:45,854 WARN L193 SmtUtils]: Spent 3.77 s on a formula simplification. DAG size of input: 380 DAG size of output: 172 [2020-07-21 13:10:50,986 WARN L193 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 399 DAG size of output: 173 [2020-07-21 13:10:54,723 WARN L193 SmtUtils]: Spent 3.19 s on a formula simplification. DAG size of input: 376 DAG size of output: 169 [2020-07-21 13:11:00,097 WARN L193 SmtUtils]: Spent 4.24 s on a formula simplification. DAG size of input: 395 DAG size of output: 170 [2020-07-21 13:11:04,066 WARN L193 SmtUtils]: Spent 3.41 s on a formula simplification. DAG size of input: 371 DAG size of output: 166 [2020-07-21 13:11:09,113 WARN L193 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 390 DAG size of output: 167 [2020-07-21 13:11:13,251 WARN L193 SmtUtils]: Spent 3.54 s on a formula simplification. DAG size of input: 364 DAG size of output: 163 [2020-07-21 13:11:18,290 WARN L193 SmtUtils]: Spent 3.89 s on a formula simplification. DAG size of input: 383 DAG size of output: 164 [2020-07-21 13:11:22,621 WARN L193 SmtUtils]: Spent 3.71 s on a formula simplification. DAG size of input: 357 DAG size of output: 160 [2020-07-21 13:11:26,987 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 376 DAG size of output: 161 [2020-07-21 13:11:30,834 WARN L193 SmtUtils]: Spent 3.27 s on a formula simplification. DAG size of input: 352 DAG size of output: 157