/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:23:13,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:23:13,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:23:13,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 01:23:13,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:23:13,816 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:23:13,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:23:13,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:23:13,818 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:23:13,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:23:13,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:23:13,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:23:13,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:23:13,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:23:13,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:23:13,820 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:23:13,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:23:13,820 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:23:13,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:23:13,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:23:13,821 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:23:13,821 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:23:13,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:23:13,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:23:13,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:23:13,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:23:13,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:23:13,822 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:23:14,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:23:14,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:23:14,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:23:14,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:23:14,218 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:23:14,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-10-24 01:23:14,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef0c093ab/d8671b056aec4e45b5a702021e13a6dc/FLAGeff3fd489 [2020-10-24 01:23:15,055 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:23:15,057 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-10-24 01:23:15,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef0c093ab/d8671b056aec4e45b5a702021e13a6dc/FLAGeff3fd489 [2020-10-24 01:23:15,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef0c093ab/d8671b056aec4e45b5a702021e13a6dc [2020-10-24 01:23:15,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:23:15,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:23:15,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:23:15,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:23:15,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:23:15,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:15" (1/1) ... [2020-10-24 01:23:15,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c19570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:15, skipping insertion in model container [2020-10-24 01:23:15,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:15" (1/1) ... [2020-10-24 01:23:15,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:23:15,416 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:23:15,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:23:15,968 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:23:16,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:23:16,156 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:23:16,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16 WrapperNode [2020-10-24 01:23:16,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:23:16,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:23:16,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:23:16,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:23:16,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16" (1/1) ... [2020-10-24 01:23:16,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16" (1/1) ... [2020-10-24 01:23:16,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16" (1/1) ... [2020-10-24 01:23:16,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16" (1/1) ... [2020-10-24 01:23:16,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16" (1/1) ... [2020-10-24 01:23:16,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16" (1/1) ... [2020-10-24 01:23:16,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16" (1/1) ... [2020-10-24 01:23:16,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:23:16,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:23:16,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:23:16,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:23:16,322 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16" (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 [2020-10-24 01:23:16,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:23:16,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:23:16,408 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:23:16,409 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-24 01:23:16,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:23:16,409 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-24 01:23:16,410 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:23:16,410 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:23:16,410 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:23:16,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:23:16,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:23:16,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 01:23:16,410 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:23:16,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:23:16,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:23:16,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:23:16,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:23:16,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:23:16,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:23:17,709 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:23:17,709 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 01:23:17,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:17 BoogieIcfgContainer [2020-10-24 01:23:17,712 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:23:17,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:23:17,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:23:17,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:23:17,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:23:15" (1/3) ... [2020-10-24 01:23:17,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b5ffa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:17, skipping insertion in model container [2020-10-24 01:23:17,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16" (2/3) ... [2020-10-24 01:23:17,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b5ffa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:17, skipping insertion in model container [2020-10-24 01:23:17,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:17" (3/3) ... [2020-10-24 01:23:17,721 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-10-24 01:23:17,733 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:23:17,739 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:23:17,752 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:23:17,777 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:23:17,778 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:23:17,778 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:23:17,778 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:23:17,778 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:23:17,778 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:23:17,778 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:23:17,778 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:23:17,805 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states. [2020-10-24 01:23:17,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-24 01:23:17,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:17,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:17,833 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:17,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1998046302, now seen corresponding path program 1 times [2020-10-24 01:23:17,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:17,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859227845] [2020-10-24 01:23:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:18,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:23:18,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859227845] [2020-10-24 01:23:18,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:23:18,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 01:23:18,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620925371] [2020-10-24 01:23:18,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 01:23:18,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:18,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 01:23:18,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 01:23:18,714 INFO L87 Difference]: Start difference. First operand 537 states. Second operand 4 states. [2020-10-24 01:23:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:21,498 INFO L93 Difference]: Finished difference Result 1248 states and 1647 transitions. [2020-10-24 01:23:21,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 01:23:21,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-24 01:23:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:21,534 INFO L225 Difference]: With dead ends: 1248 [2020-10-24 01:23:21,534 INFO L226 Difference]: Without dead ends: 670 [2020-10-24 01:23:21,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:23:21,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-24 01:23:21,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 614. [2020-10-24 01:23:21,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-10-24 01:23:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 724 transitions. [2020-10-24 01:23:21,783 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 724 transitions. Word has length 159 [2020-10-24 01:23:21,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:21,788 INFO L481 AbstractCegarLoop]: Abstraction has 614 states and 724 transitions. [2020-10-24 01:23:21,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 01:23:21,788 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 724 transitions. [2020-10-24 01:23:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-24 01:23:21,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:21,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:21,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:23:21,807 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:21,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:21,808 INFO L82 PathProgramCache]: Analyzing trace with hash -142564658, now seen corresponding path program 1 times [2020-10-24 01:23:21,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:21,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727895649] [2020-10-24 01:23:21,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:21,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-24 01:23:22,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727895649] [2020-10-24 01:23:22,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:22,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:23:22,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216237257] [2020-10-24 01:23:22,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:23:22,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:22,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:23:22,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:23:22,224 INFO L87 Difference]: Start difference. First operand 614 states and 724 transitions. Second operand 7 states. [2020-10-24 01:23:22,425 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:23:22,829 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-24 01:23:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:25,707 INFO L93 Difference]: Finished difference Result 1801 states and 2280 transitions. [2020-10-24 01:23:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 01:23:25,708 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-10-24 01:23:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:25,718 INFO L225 Difference]: With dead ends: 1801 [2020-10-24 01:23:25,718 INFO L226 Difference]: Without dead ends: 1219 [2020-10-24 01:23:25,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-24 01:23:25,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-10-24 01:23:25,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1043. [2020-10-24 01:23:25,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1043 states. [2020-10-24 01:23:25,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1310 transitions. [2020-10-24 01:23:25,909 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1310 transitions. Word has length 176 [2020-10-24 01:23:25,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:25,910 INFO L481 AbstractCegarLoop]: Abstraction has 1043 states and 1310 transitions. [2020-10-24 01:23:25,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:23:25,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1310 transitions. [2020-10-24 01:23:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-24 01:23:25,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:25,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:25,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:23:25,919 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:25,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:25,920 INFO L82 PathProgramCache]: Analyzing trace with hash 797546010, now seen corresponding path program 1 times [2020-10-24 01:23:25,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:25,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475560239] [2020-10-24 01:23:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:26,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:26,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:26,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-24 01:23:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-24 01:23:26,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475560239] [2020-10-24 01:23:26,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:26,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:23:26,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806121019] [2020-10-24 01:23:26,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:23:26,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:26,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:23:26,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:23:26,356 INFO L87 Difference]: Start difference. First operand 1043 states and 1310 transitions. Second operand 7 states. [2020-10-24 01:23:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:29,341 INFO L93 Difference]: Finished difference Result 2450 states and 3177 transitions. [2020-10-24 01:23:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:23:29,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-24 01:23:29,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:29,361 INFO L225 Difference]: With dead ends: 2450 [2020-10-24 01:23:29,361 INFO L226 Difference]: Without dead ends: 1439 [2020-10-24 01:23:29,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:23:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2020-10-24 01:23:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1229. [2020-10-24 01:23:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2020-10-24 01:23:29,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1534 transitions. [2020-10-24 01:23:29,706 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1534 transitions. Word has length 236 [2020-10-24 01:23:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:29,707 INFO L481 AbstractCegarLoop]: Abstraction has 1229 states and 1534 transitions. [2020-10-24 01:23:29,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:23:29,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1534 transitions. [2020-10-24 01:23:29,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-24 01:23:29,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:29,719 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:29,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:23:29,719 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:29,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:29,720 INFO L82 PathProgramCache]: Analyzing trace with hash 356832449, now seen corresponding path program 1 times [2020-10-24 01:23:29,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:29,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602555285] [2020-10-24 01:23:29,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:29,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:29,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:29,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-24 01:23:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:30,086 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 10 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-24 01:23:30,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602555285] [2020-10-24 01:23:30,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:30,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:23:30,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611564417] [2020-10-24 01:23:30,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:30,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:30,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:30,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:30,090 INFO L87 Difference]: Start difference. First operand 1229 states and 1534 transitions. Second operand 8 states. [2020-10-24 01:23:30,878 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:23:31,796 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:23:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:34,415 INFO L93 Difference]: Finished difference Result 3322 states and 4240 transitions. [2020-10-24 01:23:34,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:23:34,416 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 243 [2020-10-24 01:23:34,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:34,439 INFO L225 Difference]: With dead ends: 3322 [2020-10-24 01:23:34,439 INFO L226 Difference]: Without dead ends: 2125 [2020-10-24 01:23:34,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:23:34,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2020-10-24 01:23:34,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1877. [2020-10-24 01:23:34,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1877 states. [2020-10-24 01:23:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2285 transitions. [2020-10-24 01:23:34,916 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2285 transitions. Word has length 243 [2020-10-24 01:23:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:34,916 INFO L481 AbstractCegarLoop]: Abstraction has 1877 states and 2285 transitions. [2020-10-24 01:23:34,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2285 transitions. [2020-10-24 01:23:34,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-24 01:23:34,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:34,928 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:34,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 01:23:34,929 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:34,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2136345987, now seen corresponding path program 1 times [2020-10-24 01:23:34,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:34,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [555374623] [2020-10-24 01:23:34,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:35,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:35,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-24 01:23:35,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:35,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-24 01:23:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 80 proven. 24 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-24 01:23:35,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [555374623] [2020-10-24 01:23:35,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:35,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:23:35,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665045906] [2020-10-24 01:23:35,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:35,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:35,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:35,261 INFO L87 Difference]: Start difference. First operand 1877 states and 2285 transitions. Second operand 8 states. [2020-10-24 01:23:35,446 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-24 01:23:36,018 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:23:39,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:39,642 INFO L93 Difference]: Finished difference Result 4127 states and 5040 transitions. [2020-10-24 01:23:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:23:39,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 272 [2020-10-24 01:23:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:39,659 INFO L225 Difference]: With dead ends: 4127 [2020-10-24 01:23:39,659 INFO L226 Difference]: Without dead ends: 2282 [2020-10-24 01:23:39,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-24 01:23:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2020-10-24 01:23:40,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2194. [2020-10-24 01:23:40,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2194 states. [2020-10-24 01:23:40,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2194 states to 2194 states and 2641 transitions. [2020-10-24 01:23:40,144 INFO L78 Accepts]: Start accepts. Automaton has 2194 states and 2641 transitions. Word has length 272 [2020-10-24 01:23:40,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:40,144 INFO L481 AbstractCegarLoop]: Abstraction has 2194 states and 2641 transitions. [2020-10-24 01:23:40,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2194 states and 2641 transitions. [2020-10-24 01:23:40,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-24 01:23:40,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:40,156 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:40,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 01:23:40,157 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:40,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:40,157 INFO L82 PathProgramCache]: Analyzing trace with hash -538595882, now seen corresponding path program 1 times [2020-10-24 01:23:40,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:40,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982355691] [2020-10-24 01:23:40,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:40,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:40,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:40,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-24 01:23:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:40,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-24 01:23:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 114 proven. 22 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-24 01:23:40,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982355691] [2020-10-24 01:23:40,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:40,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:23:40,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892235683] [2020-10-24 01:23:40,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:23:40,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:40,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:23:40,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:23:40,503 INFO L87 Difference]: Start difference. First operand 2194 states and 2641 transitions. Second operand 7 states. [2020-10-24 01:23:43,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:43,282 INFO L93 Difference]: Finished difference Result 5467 states and 6783 transitions. [2020-10-24 01:23:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 01:23:43,283 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-24 01:23:43,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:43,306 INFO L225 Difference]: With dead ends: 5467 [2020-10-24 01:23:43,306 INFO L226 Difference]: Without dead ends: 3305 [2020-10-24 01:23:43,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-24 01:23:43,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2020-10-24 01:23:44,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 3079. [2020-10-24 01:23:44,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3079 states. [2020-10-24 01:23:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3079 states to 3079 states and 3727 transitions. [2020-10-24 01:23:44,049 INFO L78 Accepts]: Start accepts. Automaton has 3079 states and 3727 transitions. Word has length 281 [2020-10-24 01:23:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:44,049 INFO L481 AbstractCegarLoop]: Abstraction has 3079 states and 3727 transitions. [2020-10-24 01:23:44,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:23:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3079 states and 3727 transitions. [2020-10-24 01:23:44,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-24 01:23:44,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:44,066 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:44,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 01:23:44,067 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:44,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:44,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1947132653, now seen corresponding path program 1 times [2020-10-24 01:23:44,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:44,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271023905] [2020-10-24 01:23:44,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:44,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:44,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:44,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:44,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:44,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-24 01:23:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:44,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-24 01:23:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 138 proven. 28 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-24 01:23:44,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271023905] [2020-10-24 01:23:44,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:44,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:23:44,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540708203] [2020-10-24 01:23:44,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:23:44,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:44,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:23:44,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:23:44,542 INFO L87 Difference]: Start difference. First operand 3079 states and 3727 transitions. Second operand 10 states. [2020-10-24 01:23:44,729 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:23:44,983 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2020-10-24 01:23:45,567 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-24 01:23:45,899 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:23:46,546 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:23:46,759 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:23:47,266 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:23:47,796 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:23:48,563 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:23:52,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:52,016 INFO L93 Difference]: Finished difference Result 8643 states and 10482 transitions. [2020-10-24 01:23:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-24 01:23:52,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 289 [2020-10-24 01:23:52,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:52,050 INFO L225 Difference]: With dead ends: 8643 [2020-10-24 01:23:52,050 INFO L226 Difference]: Without dead ends: 5737 [2020-10-24 01:23:52,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=312, Invalid=1170, Unknown=0, NotChecked=0, Total=1482 [2020-10-24 01:23:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2020-10-24 01:23:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 5243. [2020-10-24 01:23:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5243 states. [2020-10-24 01:23:53,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 6301 transitions. [2020-10-24 01:23:53,391 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 6301 transitions. Word has length 289 [2020-10-24 01:23:53,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:53,391 INFO L481 AbstractCegarLoop]: Abstraction has 5243 states and 6301 transitions. [2020-10-24 01:23:53,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:23:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 6301 transitions. [2020-10-24 01:23:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-24 01:23:53,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:53,415 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:53,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 01:23:53,415 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:53,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:53,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1784667156, now seen corresponding path program 1 times [2020-10-24 01:23:53,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:53,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986095971] [2020-10-24 01:23:53,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:53,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:53,716 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-10-24 01:23:53,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:53,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:23:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:53,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-24 01:23:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:53,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-24 01:23:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 134 proven. 44 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-24 01:23:53,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986095971] [2020-10-24 01:23:53,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:53,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:23:53,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856933838] [2020-10-24 01:23:53,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:23:53,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:53,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:23:53,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:23:53,909 INFO L87 Difference]: Start difference. First operand 5243 states and 6301 transitions. Second operand 8 states. [2020-10-24 01:23:54,093 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:23:54,956 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:23:55,605 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:23:58,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:23:58,509 INFO L93 Difference]: Finished difference Result 10688 states and 12864 transitions. [2020-10-24 01:23:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 01:23:58,510 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 303 [2020-10-24 01:23:58,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:23:58,540 INFO L225 Difference]: With dead ends: 10688 [2020-10-24 01:23:58,540 INFO L226 Difference]: Without dead ends: 5618 [2020-10-24 01:23:58,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:23:58,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5618 states. [2020-10-24 01:23:59,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5618 to 5537. [2020-10-24 01:23:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5537 states. [2020-10-24 01:23:59,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5537 states to 5537 states and 6620 transitions. [2020-10-24 01:23:59,612 INFO L78 Accepts]: Start accepts. Automaton has 5537 states and 6620 transitions. Word has length 303 [2020-10-24 01:23:59,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:23:59,613 INFO L481 AbstractCegarLoop]: Abstraction has 5537 states and 6620 transitions. [2020-10-24 01:23:59,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:23:59,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5537 states and 6620 transitions. [2020-10-24 01:23:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-24 01:23:59,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:23:59,635 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:23:59,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 01:23:59,636 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:23:59,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:23:59,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1767054547, now seen corresponding path program 1 times [2020-10-24 01:23:59,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:23:59,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928563487] [2020-10-24 01:23:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:23:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:59,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:23:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:59,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:23:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:59,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:23:59,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:59,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-24 01:23:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:59,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-24 01:23:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:23:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 170 proven. 33 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-24 01:23:59,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928563487] [2020-10-24 01:23:59,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:23:59,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:23:59,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423583866] [2020-10-24 01:23:59,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:23:59,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:23:59,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:23:59,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:23:59,999 INFO L87 Difference]: Start difference. First operand 5537 states and 6620 transitions. Second operand 7 states. [2020-10-24 01:24:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:04,477 INFO L93 Difference]: Finished difference Result 12345 states and 14907 transitions. [2020-10-24 01:24:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 01:24:04,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-24 01:24:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:04,520 INFO L225 Difference]: With dead ends: 12345 [2020-10-24 01:24:04,520 INFO L226 Difference]: Without dead ends: 6981 [2020-10-24 01:24:04,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:24:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6981 states. [2020-10-24 01:24:05,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6981 to 6881. [2020-10-24 01:24:05,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6881 states. [2020-10-24 01:24:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 8228 transitions. [2020-10-24 01:24:05,967 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 8228 transitions. Word has length 325 [2020-10-24 01:24:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:05,968 INFO L481 AbstractCegarLoop]: Abstraction has 6881 states and 8228 transitions. [2020-10-24 01:24:05,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:24:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 8228 transitions. [2020-10-24 01:24:05,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-24 01:24:05,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:05,992 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:05,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 01:24:05,992 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:05,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:05,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1072816840, now seen corresponding path program 1 times [2020-10-24 01:24:05,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:05,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178234432] [2020-10-24 01:24:05,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:06,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:06,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:06,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-24 01:24:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-24 01:24:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:06,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-24 01:24:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 192 proven. 28 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-24 01:24:06,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178234432] [2020-10-24 01:24:06,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:06,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 01:24:06,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131255992] [2020-10-24 01:24:06,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 01:24:06,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:06,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 01:24:06,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-24 01:24:06,437 INFO L87 Difference]: Start difference. First operand 6881 states and 8228 transitions. Second operand 10 states. [2020-10-24 01:24:06,597 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:24:06,765 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:24:07,956 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:24:08,620 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-10-24 01:24:08,810 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-24 01:24:09,061 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:24:09,755 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:24:11,392 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:24:13,083 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:24:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:15,435 INFO L93 Difference]: Finished difference Result 14470 states and 17386 transitions. [2020-10-24 01:24:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-24 01:24:15,435 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 336 [2020-10-24 01:24:15,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:15,469 INFO L225 Difference]: With dead ends: 14470 [2020-10-24 01:24:15,469 INFO L226 Difference]: Without dead ends: 7303 [2020-10-24 01:24:15,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2020-10-24 01:24:15,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7303 states. [2020-10-24 01:24:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7303 to 6597. [2020-10-24 01:24:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6597 states. [2020-10-24 01:24:16,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6597 states to 6597 states and 7288 transitions. [2020-10-24 01:24:16,911 INFO L78 Accepts]: Start accepts. Automaton has 6597 states and 7288 transitions. Word has length 336 [2020-10-24 01:24:16,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:16,912 INFO L481 AbstractCegarLoop]: Abstraction has 6597 states and 7288 transitions. [2020-10-24 01:24:16,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 01:24:16,912 INFO L276 IsEmpty]: Start isEmpty. Operand 6597 states and 7288 transitions. [2020-10-24 01:24:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-24 01:24:16,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:16,930 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:16,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 01:24:16,930 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:16,931 INFO L82 PathProgramCache]: Analyzing trace with hash -399839654, now seen corresponding path program 1 times [2020-10-24 01:24:16,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:16,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1197115399] [2020-10-24 01:24:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:17,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:17,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 01:24:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:17,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-24 01:24:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:17,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-24 01:24:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:17,453 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 240 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-24 01:24:17,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1197115399] [2020-10-24 01:24:17,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:17,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:24:17,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137868461] [2020-10-24 01:24:17,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:24:17,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:17,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:24:17,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:24:17,455 INFO L87 Difference]: Start difference. First operand 6597 states and 7288 transitions. Second operand 8 states. [2020-10-24 01:24:17,781 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-24 01:24:18,364 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-10-24 01:24:20,044 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-24 01:24:21,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:21,874 INFO L93 Difference]: Finished difference Result 13443 states and 14874 transitions. [2020-10-24 01:24:21,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 01:24:21,876 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 346 [2020-10-24 01:24:21,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:21,911 INFO L225 Difference]: With dead ends: 13443 [2020-10-24 01:24:21,911 INFO L226 Difference]: Without dead ends: 6800 [2020-10-24 01:24:21,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:24:21,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6800 states. [2020-10-24 01:24:23,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6800 to 6578. [2020-10-24 01:24:23,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6578 states. [2020-10-24 01:24:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6578 states to 6578 states and 7177 transitions. [2020-10-24 01:24:23,676 INFO L78 Accepts]: Start accepts. Automaton has 6578 states and 7177 transitions. Word has length 346 [2020-10-24 01:24:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:23,677 INFO L481 AbstractCegarLoop]: Abstraction has 6578 states and 7177 transitions. [2020-10-24 01:24:23,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:24:23,677 INFO L276 IsEmpty]: Start isEmpty. Operand 6578 states and 7177 transitions. [2020-10-24 01:24:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-24 01:24:23,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:23,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:23,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 01:24:23,693 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:23,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1440132470, now seen corresponding path program 1 times [2020-10-24 01:24:23,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:23,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149802235] [2020-10-24 01:24:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:23,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:23,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:23,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:24:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:23,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:24:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 322 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-10-24 01:24:24,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149802235] [2020-10-24 01:24:24,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:24,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-24 01:24:24,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209152192] [2020-10-24 01:24:24,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:24:24,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:24,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:24:24,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:24:24,302 INFO L87 Difference]: Start difference. First operand 6578 states and 7177 transitions. Second operand 8 states. [2020-10-24 01:24:24,620 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-24 01:24:25,642 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 93 [2020-10-24 01:24:27,241 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:24:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:28,897 INFO L93 Difference]: Finished difference Result 14061 states and 15399 transitions. [2020-10-24 01:24:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-24 01:24:28,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 378 [2020-10-24 01:24:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:29,031 INFO L225 Difference]: With dead ends: 14061 [2020-10-24 01:24:29,033 INFO L226 Difference]: Without dead ends: 7656 [2020-10-24 01:24:29,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-24 01:24:29,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7656 states. [2020-10-24 01:24:30,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7656 to 6594. [2020-10-24 01:24:30,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6594 states. [2020-10-24 01:24:30,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6594 states to 6594 states and 7182 transitions. [2020-10-24 01:24:30,623 INFO L78 Accepts]: Start accepts. Automaton has 6594 states and 7182 transitions. Word has length 378 [2020-10-24 01:24:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:30,623 INFO L481 AbstractCegarLoop]: Abstraction has 6594 states and 7182 transitions. [2020-10-24 01:24:30,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:24:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 6594 states and 7182 transitions. [2020-10-24 01:24:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-24 01:24:30,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:30,636 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:30,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 01:24:30,636 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:30,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:30,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1996313723, now seen corresponding path program 1 times [2020-10-24 01:24:30,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:30,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724111783] [2020-10-24 01:24:30,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:30,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:30,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:30,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:24:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:30,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:24:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-24 01:24:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 215 proven. 4 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-24 01:24:31,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724111783] [2020-10-24 01:24:31,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:31,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-24 01:24:31,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172129811] [2020-10-24 01:24:31,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 01:24:31,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:31,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 01:24:31,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 01:24:31,105 INFO L87 Difference]: Start difference. First operand 6594 states and 7182 transitions. Second operand 5 states. [2020-10-24 01:24:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:34,240 INFO L93 Difference]: Finished difference Result 11709 states and 12794 transitions. [2020-10-24 01:24:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 01:24:34,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 399 [2020-10-24 01:24:34,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:34,266 INFO L225 Difference]: With dead ends: 11709 [2020-10-24 01:24:34,266 INFO L226 Difference]: Without dead ends: 4333 [2020-10-24 01:24:34,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 01:24:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2020-10-24 01:24:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 4320. [2020-10-24 01:24:35,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4320 states. [2020-10-24 01:24:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4320 states to 4320 states and 4616 transitions. [2020-10-24 01:24:35,393 INFO L78 Accepts]: Start accepts. Automaton has 4320 states and 4616 transitions. Word has length 399 [2020-10-24 01:24:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:35,394 INFO L481 AbstractCegarLoop]: Abstraction has 4320 states and 4616 transitions. [2020-10-24 01:24:35,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 01:24:35,394 INFO L276 IsEmpty]: Start isEmpty. Operand 4320 states and 4616 transitions. [2020-10-24 01:24:35,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2020-10-24 01:24:35,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:24:35,403 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 01:24:35,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 01:24:35,403 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:24:35,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:24:35,404 INFO L82 PathProgramCache]: Analyzing trace with hash -2043114662, now seen corresponding path program 1 times [2020-10-24 01:24:35,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:24:35,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957051206] [2020-10-24 01:24:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:24:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:35,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:24:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:35,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-24 01:24:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:35,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-24 01:24:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:35,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 01:24:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:35,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-10-24 01:24:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:35,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-24 01:24:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:24:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 225 proven. 40 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2020-10-24 01:24:35,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957051206] [2020-10-24 01:24:35,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 01:24:35,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 01:24:35,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433559584] [2020-10-24 01:24:35,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 01:24:35,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:24:35,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 01:24:35,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-24 01:24:35,926 INFO L87 Difference]: Start difference. First operand 4320 states and 4616 transitions. Second operand 7 states. [2020-10-24 01:24:36,525 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-24 01:24:39,283 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-24 01:24:39,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:24:39,720 INFO L93 Difference]: Finished difference Result 8520 states and 9107 transitions. [2020-10-24 01:24:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-24 01:24:39,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 423 [2020-10-24 01:24:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:24:39,725 INFO L225 Difference]: With dead ends: 8520 [2020-10-24 01:24:39,726 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:24:39,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:24:39,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:24:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:24:39,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:24:39,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:24:39,744 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 423 [2020-10-24 01:24:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:24:39,744 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:24:39,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 01:24:39,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:24:39,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:24:39,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-24 01:24:39,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:24:40,313 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:24:40,583 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-24 01:24:52,409 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 146 [2020-10-24 01:24:52,535 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 136 [2020-10-24 01:24:52,764 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2020-10-24 01:25:04,433 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-10-24 01:25:28,283 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-10-24 01:25:29,206 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-10-24 01:25:29,325 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-10-24 01:25:41,641 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-10-24 01:26:06,431 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 142 [2020-10-24 01:26:06,587 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 139 [2020-10-24 01:26:06,743 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 142 [2020-10-24 01:26:06,896 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 139 [2020-10-24 01:26:07,011 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 142 [2020-10-24 01:26:07,120 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 142 [2020-10-24 01:26:09,630 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 130 [2020-10-24 01:26:32,761 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-10-24 01:26:33,262 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 159 [2020-10-24 01:26:47,211 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 145 [2020-10-24 01:27:07,389 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-10-24 01:27:07,509 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-10-24 01:27:07,626 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-10-24 01:27:09,299 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 249 DAG size of output: 193 [2020-10-24 01:27:17,483 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 146 [2020-10-24 01:27:17,607 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 136 [2020-10-24 01:27:17,786 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2020-10-24 01:27:19,141 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:27:22,103 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:27:25,006 WARN L193 SmtUtils]: Spent 2.89 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:27:27,878 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:27:28,747 WARN L193 SmtUtils]: Spent 856.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:27:29,569 WARN L193 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:27:30,421 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:27:33,311 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:27:34,184 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:27:37,075 WARN L193 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:27:38,123 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-10-24 01:27:39,069 WARN L193 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 71 [2020-10-24 01:27:39,747 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-10-24 01:27:40,452 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2020-10-24 01:27:41,076 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2020-10-24 01:27:42,647 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 176 DAG size of output: 73 [2020-10-24 01:27:45,569 WARN L193 SmtUtils]: Spent 2.91 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:27:47,084 WARN L193 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 225 DAG size of output: 72 [2020-10-24 01:27:47,838 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 69 [2020-10-24 01:27:50,746 WARN L193 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:27:53,664 WARN L193 SmtUtils]: Spent 2.91 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:27:54,502 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-10-24 01:27:55,182 WARN L193 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-10-24 01:27:56,397 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 114 DAG size of output: 62 [2020-10-24 01:27:57,657 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 165 DAG size of output: 71 [2020-10-24 01:28:00,574 WARN L193 SmtUtils]: Spent 2.91 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:28:01,190 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-24 01:28:02,085 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:28:02,726 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2020-10-24 01:28:03,682 WARN L193 SmtUtils]: Spent 950.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-10-24 01:28:04,528 WARN L193 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-10-24 01:28:05,311 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2020-10-24 01:28:08,240 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:28:09,191 WARN L193 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 71 [2020-10-24 01:28:12,118 WARN L193 SmtUtils]: Spent 2.92 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:28:12,796 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-10-24 01:28:13,528 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2020-10-24 01:28:14,211 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 68 [2020-10-24 01:28:17,150 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:28:18,051 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-24 01:28:18,897 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-10-24 01:28:19,788 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-10-24 01:28:21,187 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 141 DAG size of output: 72 [2020-10-24 01:28:22,367 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 137 DAG size of output: 74 [2020-10-24 01:28:23,111 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2020-10-24 01:28:23,843 WARN L193 SmtUtils]: Spent 723.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 70 [2020-10-24 01:28:26,789 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:28:27,660 WARN L193 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2020-10-24 01:28:28,662 WARN L193 SmtUtils]: Spent 995.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 72 [2020-10-24 01:28:29,487 WARN L193 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 73 [2020-10-24 01:28:30,133 WARN L193 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2020-10-24 01:28:30,823 WARN L193 SmtUtils]: Spent 684.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-10-24 01:28:31,526 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-10-24 01:28:32,147 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 66 [2020-10-24 01:28:33,205 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-10-24 01:28:33,925 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2020-10-24 01:28:35,308 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 135 DAG size of output: 72 [2020-10-24 01:28:38,261 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:28:38,976 WARN L193 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2020-10-24 01:28:39,911 WARN L193 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 63 [2020-10-24 01:28:40,803 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:28:41,431 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2020-10-24 01:28:44,388 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:28:45,013 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-24 01:28:45,858 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:28:48,807 WARN L193 SmtUtils]: Spent 2.94 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:28:51,771 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:28:54,729 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:28:55,612 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:28:56,495 WARN L193 SmtUtils]: Spent 875.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:28:57,377 WARN L193 SmtUtils]: Spent 874.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:29:00,339 WARN L193 SmtUtils]: Spent 2.95 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:29:03,307 WARN L193 SmtUtils]: Spent 2.96 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:29:03,927 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-24 01:29:05,078 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 129 DAG size of output: 69 [2020-10-24 01:29:08,052 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:29:08,827 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 70 [2020-10-24 01:29:09,912 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 173 DAG size of output: 70 [2020-10-24 01:29:10,616 WARN L193 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2020-10-24 01:29:11,559 WARN L193 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 70 [2020-10-24 01:29:13,191 WARN L193 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 177 DAG size of output: 77 [2020-10-24 01:29:13,905 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-10-24 01:29:15,339 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 225 DAG size of output: 76 [2020-10-24 01:29:16,245 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-10-24 01:29:17,626 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 182 DAG size of output: 72 [2020-10-24 01:29:18,636 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-24 01:29:21,612 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:29:22,278 WARN L193 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2020-10-24 01:29:23,557 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2020-10-24 01:29:24,178 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2020-10-24 01:29:24,847 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2020-10-24 01:29:25,590 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 69 [2020-10-24 01:29:26,486 WARN L193 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:29:27,107 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-10-24 01:29:30,099 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:29:33,090 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:29:33,986 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:29:36,980 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:29:39,965 WARN L193 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:29:42,969 WARN L193 SmtUtils]: Spent 3.00 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:29:43,823 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:29:45,192 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2020-10-24 01:29:46,327 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2020-10-24 01:29:49,326 WARN L193 SmtUtils]: Spent 2.99 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:29:50,065 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 69 [2020-10-24 01:29:50,688 WARN L193 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 65 [2020-10-24 01:29:51,400 WARN L193 SmtUtils]: Spent 706.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-10-24 01:29:52,891 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 196 DAG size of output: 73 [2020-10-24 01:29:53,900 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 167 DAG size of output: 72 [2020-10-24 01:29:54,776 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 65 [2020-10-24 01:29:56,084 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 171 DAG size of output: 75 [2020-10-24 01:29:57,039 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2020-10-24 01:29:57,739 WARN L193 SmtUtils]: Spent 692.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-10-24 01:29:58,674 WARN L193 SmtUtils]: Spent 928.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-10-24 01:30:01,678 WARN L193 SmtUtils]: Spent 3.00 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:30:02,773 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-10-24 01:30:05,783 WARN L193 SmtUtils]: Spent 3.00 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:30:06,969 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 123 DAG size of output: 69 [2020-10-24 01:30:07,873 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:30:08,734 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:30:11,753 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:30:12,949 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 183 DAG size of output: 73 [2020-10-24 01:30:13,964 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 119 DAG size of output: 65 [2020-10-24 01:30:16,972 WARN L193 SmtUtils]: Spent 3.00 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:30:17,755 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2020-10-24 01:30:18,723 WARN L193 SmtUtils]: Spent 961.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 67 [2020-10-24 01:30:19,619 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 68 [2020-10-24 01:30:20,300 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2020-10-24 01:30:21,176 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-10-24 01:30:22,057 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 66 [2020-10-24 01:30:25,073 WARN L193 SmtUtils]: Spent 3.01 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:30:26,187 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 172 DAG size of output: 71 [2020-10-24 01:30:26,924 WARN L193 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 65 [2020-10-24 01:30:28,149 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 124 DAG size of output: 71 [2020-10-24 01:30:29,039 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-10-24 01:30:29,742 WARN L193 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 69 [2020-10-24 01:30:30,819 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 168 DAG size of output: 71 [2020-10-24 01:30:31,698 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-10-24 01:30:32,725 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 119 DAG size of output: 66 [2020-10-24 01:30:33,863 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 136 DAG size of output: 71 [2020-10-24 01:30:34,973 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 139 DAG size of output: 69 [2020-10-24 01:30:36,323 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 192 DAG size of output: 74 [2020-10-24 01:30:36,993 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-24 01:30:37,784 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 72 [2020-10-24 01:30:38,518 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 69 [2020-10-24 01:30:39,778 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 153 DAG size of output: 76 [2020-10-24 01:30:41,088 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2020-10-24 01:30:41,951 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:30:42,917 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 63 [2020-10-24 01:30:45,966 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:30:49,003 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:30:49,979 WARN L193 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 63 [2020-10-24 01:30:50,946 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 63 [2020-10-24 01:30:51,811 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:30:52,953 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 121 DAG size of output: 72 [2020-10-24 01:30:55,998 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:30:56,890 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2020-10-24 01:30:57,782 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 67 [2020-10-24 01:30:58,928 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 136 DAG size of output: 69 [2020-10-24 01:31:01,969 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:05,012 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:05,718 WARN L193 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-10-24 01:31:06,690 WARN L193 SmtUtils]: Spent 965.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 71 [2020-10-24 01:31:09,737 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:10,660 WARN L193 SmtUtils]: Spent 914.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:31:11,568 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:31:12,437 WARN L193 SmtUtils]: Spent 862.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:31:15,482 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:16,394 WARN L193 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:31:17,311 WARN L193 SmtUtils]: Spent 909.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:31:20,367 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:21,245 WARN L193 SmtUtils]: Spent 870.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:31:24,300 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:25,218 WARN L193 SmtUtils]: Spent 910.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:31:26,108 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2020-10-24 01:31:26,999 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 66 [2020-10-24 01:31:27,937 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-10-24 01:31:30,998 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:31,710 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-10-24 01:31:34,762 WARN L193 SmtUtils]: Spent 3.04 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:35,722 WARN L193 SmtUtils]: Spent 951.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-24 01:31:36,496 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 71 [2020-10-24 01:31:37,375 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:31:40,430 WARN L193 SmtUtils]: Spent 3.05 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:43,498 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:44,415 WARN L193 SmtUtils]: Spent 911.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-10-24 01:31:45,788 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 133 DAG size of output: 66 [2020-10-24 01:31:48,851 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:31:49,728 WARN L193 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:31:50,765 WARN L193 SmtUtils]: Spent 979.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 63 [2020-10-24 01:31:51,556 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2020-10-24 01:31:52,570 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-10-24 01:31:53,500 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 66 [2020-10-24 01:31:54,235 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 70 [2020-10-24 01:31:57,302 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:32:00,372 WARN L193 SmtUtils]: Spent 3.06 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:32:01,190 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2020-10-24 01:32:01,969 WARN L193 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 71 [2020-10-24 01:32:02,894 WARN L193 SmtUtils]: Spent 918.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-10-24 01:32:03,562 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2020-10-24 01:32:04,462 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-10-24 01:32:05,455 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 68 [2020-10-24 01:32:06,179 WARN L193 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-10-24 01:32:06,880 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 66 [2020-10-24 01:32:07,564 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2020-10-24 01:32:08,467 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-10-24 01:32:09,358 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-10-24 01:32:10,228 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 74 [2020-10-24 01:32:13,326 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:32:14,492 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 142 DAG size of output: 71 [2020-10-24 01:32:15,709 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 128 DAG size of output: 70 [2020-10-24 01:32:16,364 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2020-10-24 01:32:17,472 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 121 DAG size of output: 67 [2020-10-24 01:32:20,559 WARN L193 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:32:21,491 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 67 [2020-10-24 01:32:24,580 WARN L193 SmtUtils]: Spent 3.08 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:32:25,704 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2020-10-24 01:32:26,630 WARN L193 SmtUtils]: Spent 920.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2020-10-24 01:32:27,701 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 117 DAG size of output: 69 [2020-10-24 01:32:30,799 WARN L193 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:32:31,485 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2020-10-24 01:32:33,142 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 229 DAG size of output: 78 [2020-10-24 01:32:34,053 WARN L193 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2020-10-24 01:32:34,814 WARN L193 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 69 [2020-10-24 01:32:36,290 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 203 DAG size of output: 76 [2020-10-24 01:32:36,976 WARN L193 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-10-24 01:32:40,084 WARN L193 SmtUtils]: Spent 3.10 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:32:40,767 WARN L193 SmtUtils]: Spent 676.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2020-10-24 01:32:43,880 WARN L193 SmtUtils]: Spent 3.11 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:32:44,764 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 73 [2020-10-24 01:32:45,435 WARN L193 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2020-10-24 01:32:46,348 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2020-10-24 01:32:47,796 WARN L193 SmtUtils]: Spent 1.44 s on a formula simplification. DAG size of input: 182 DAG size of output: 72 [2020-10-24 01:32:50,946 WARN L193 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:32:51,885 WARN L193 SmtUtils]: Spent 931.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:32:52,796 WARN L193 SmtUtils]: Spent 896.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:32:53,411 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2020-10-24 01:32:54,308 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:32:57,453 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:32:58,077 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 54 [2020-10-24 01:33:01,213 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:04,356 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:05,040 WARN L193 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-10-24 01:33:08,178 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:08,843 WARN L193 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 67 [2020-10-24 01:33:09,777 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 66 [2020-10-24 01:33:12,911 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:14,761 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 206 DAG size of output: 78 [2020-10-24 01:33:15,684 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2020-10-24 01:33:16,425 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-10-24 01:33:19,586 WARN L193 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:20,351 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 68 [2020-10-24 01:33:23,476 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:24,384 WARN L193 SmtUtils]: Spent 900.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:33:27,516 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:30,644 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:32,026 WARN L193 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 125 DAG size of output: 62 [2020-10-24 01:33:32,768 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-10-24 01:33:33,521 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-10-24 01:33:36,655 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:37,474 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 69 [2020-10-24 01:33:40,609 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:41,358 WARN L193 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 69 [2020-10-24 01:33:42,372 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 163 DAG size of output: 67 [2020-10-24 01:33:45,503 WARN L193 SmtUtils]: Spent 3.12 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:46,249 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 67 [2020-10-24 01:33:47,478 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 144 DAG size of output: 74 [2020-10-24 01:33:49,220 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 177 DAG size of output: 77 [2020-10-24 01:33:50,149 WARN L193 SmtUtils]: Spent 922.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 72 [2020-10-24 01:33:53,287 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:56,444 WARN L193 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:33:57,390 WARN L193 SmtUtils]: Spent 939.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-10-24 01:33:58,206 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2020-10-24 01:34:01,358 WARN L193 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:04,514 WARN L193 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:06,239 WARN L193 SmtUtils]: Spent 1.72 s on a formula simplification. DAG size of input: 204 DAG size of output: 72 [2020-10-24 01:34:07,747 WARN L193 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 216 DAG size of output: 75 [2020-10-24 01:34:10,912 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:11,583 WARN L193 SmtUtils]: Spent 665.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2020-10-24 01:34:12,836 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 144 DAG size of output: 73 [2020-10-24 01:34:14,189 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 183 DAG size of output: 74 [2020-10-24 01:34:15,241 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-10-24 01:34:18,406 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:21,576 WARN L193 SmtUtils]: Spent 3.16 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:23,188 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 206 DAG size of output: 74 [2020-10-24 01:34:24,721 WARN L193 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2020-10-24 01:34:28,155 WARN L193 SmtUtils]: Spent 3.43 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:28,985 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 69 [2020-10-24 01:34:32,397 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:33,089 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2020-10-24 01:34:33,846 WARN L193 SmtUtils]: Spent 750.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 68 [2020-10-24 01:34:35,063 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2020-10-24 01:34:35,763 WARN L193 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 63 [2020-10-24 01:34:36,575 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 69 [2020-10-24 01:34:39,945 WARN L193 SmtUtils]: Spent 3.36 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:41,193 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-10-24 01:34:42,347 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 174 DAG size of output: 72 [2020-10-24 01:34:43,919 WARN L193 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 123 DAG size of output: 70 [2020-10-24 01:34:44,902 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2020-10-24 01:34:45,584 WARN L193 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-10-24 01:34:48,887 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:52,226 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:53,583 WARN L193 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 130 DAG size of output: 74 [2020-10-24 01:34:54,664 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 163 DAG size of output: 67 [2020-10-24 01:34:55,482 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2020-10-24 01:34:58,703 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:34:59,925 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 176 DAG size of output: 71 [2020-10-24 01:35:00,762 WARN L193 SmtUtils]: Spent 830.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 69 [2020-10-24 01:35:01,570 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 68 [2020-10-24 01:35:04,909 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:35:05,064 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 36 [2020-10-24 01:35:08,275 WARN L193 SmtUtils]: Spent 3.20 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:35:11,672 WARN L193 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:35:12,905 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 167 DAG size of output: 71 [2020-10-24 01:35:14,897 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 226 DAG size of output: 77 [2020-10-24 01:35:16,393 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 165 DAG size of output: 71 [2020-10-24 01:35:17,654 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 138 DAG size of output: 70 [2020-10-24 01:35:19,003 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 156 DAG size of output: 74 [2020-10-24 01:35:20,013 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 118 DAG size of output: 67 [2020-10-24 01:35:21,076 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 167 DAG size of output: 71 [2020-10-24 01:35:22,442 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 183 DAG size of output: 73 [2020-10-24 01:35:23,603 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 130 DAG size of output: 73 [2020-10-24 01:35:26,939 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:35:30,257 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:35:30,996 WARN L193 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 66 [2020-10-24 01:35:32,606 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 210 DAG size of output: 71 [2020-10-24 01:35:33,560 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:35:36,866 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:35:38,168 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 144 DAG size of output: 72 [2020-10-24 01:35:39,153 WARN L193 SmtUtils]: Spent 978.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:35:40,150 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:35:41,110 WARN L193 SmtUtils]: Spent 953.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:35:44,442 WARN L193 SmtUtils]: Spent 3.32 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:35:45,423 WARN L193 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:35:48,734 WARN L193 SmtUtils]: Spent 3.30 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:35:52,023 WARN L193 SmtUtils]: Spent 3.28 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:35:55,326 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:35:56,276 WARN L193 SmtUtils]: Spent 943.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 71 [2020-10-24 01:35:57,286 WARN L193 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:35:58,283 WARN L193 SmtUtils]: Spent 990.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 67 [2020-10-24 01:35:59,368 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 127 DAG size of output: 70 [2020-10-24 01:36:02,708 WARN L193 SmtUtils]: Spent 3.33 s on a formula simplification. DAG size of input: 207 DAG size of output: 84 [2020-10-24 01:36:04,057 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 146 DAG size of output: 73 [2020-10-24 01:36:04,850 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67