/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/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:09:07,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:09:07,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:09:07,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:09:07,763 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:09:07,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:09:07,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:09:07,770 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:09:07,771 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:09:07,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:09:07,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:09:07,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:09:07,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:09:07,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:09:07,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:09:07,803 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:09:07,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:09:07,827 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 02:09:07,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:09:07,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:09:07,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:09:07,855 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:09:07,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:09:07,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:09:07,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:09:07,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:09:07,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:09:07,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:09:07,858 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:09:07,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:09:07,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:09:07,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:09:07,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:09:07,859 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:09:07,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:09:07,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:09:07,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:09:07,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:09:07,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:09:07,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:09:07,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:09:08,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:09:08,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:09:08,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:09:08,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:09:08,343 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:09:08,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-10-24 02:09:08,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa87be649/93f80134bf3a41d0b3e181acac9bc0e4/FLAGa64057fcd [2020-10-24 02:09:09,177 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:09:09,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-10-24 02:09:09,207 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa87be649/93f80134bf3a41d0b3e181acac9bc0e4/FLAGa64057fcd [2020-10-24 02:09:09,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa87be649/93f80134bf3a41d0b3e181acac9bc0e4 [2020-10-24 02:09:09,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:09:09,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:09:09,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:09:09,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:09:09,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:09:09,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:09:09" (1/1) ... [2020-10-24 02:09:09,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@464bf060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:09, skipping insertion in model container [2020-10-24 02:09:09,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:09:09" (1/1) ... [2020-10-24 02:09:09,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:09:09,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:09:10,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:09:10,079 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:09:10,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:09:10,195 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:09:10,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10 WrapperNode [2020-10-24 02:09:10,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:09:10,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:09:10,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:09:10,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:09:10,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10" (1/1) ... [2020-10-24 02:09:10,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10" (1/1) ... [2020-10-24 02:09:10,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10" (1/1) ... [2020-10-24 02:09:10,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10" (1/1) ... [2020-10-24 02:09:10,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10" (1/1) ... [2020-10-24 02:09:10,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10" (1/1) ... [2020-10-24 02:09:10,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10" (1/1) ... [2020-10-24 02:09:10,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:09:10,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:09:10,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:09:10,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:09:10,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10" (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 02:09:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:09:10,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:09:10,420 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:09:10,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-24 02:09:10,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:09:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-24 02:09:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:09:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:09:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:09:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:09:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:09:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-24 02:09:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:09:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:09:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:09:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:09:10,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:09:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:09:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:09:11,978 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:09:11,978 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:09:11,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:09:11 BoogieIcfgContainer [2020-10-24 02:09:11,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:09:11,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:09:11,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:09:11,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:09:11,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:09:09" (1/3) ... [2020-10-24 02:09:11,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c96afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:09:11, skipping insertion in model container [2020-10-24 02:09:11,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:09:10" (2/3) ... [2020-10-24 02:09:11,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c96afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:09:11, skipping insertion in model container [2020-10-24 02:09:11,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:09:11" (3/3) ... [2020-10-24 02:09:11,993 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-10-24 02:09:12,006 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:09:12,012 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:09:12,026 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:09:12,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:09:12,063 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:09:12,063 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:09:12,063 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:09:12,063 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:09:12,064 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:09:12,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:09:12,064 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:09:12,103 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states. [2020-10-24 02:09:12,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-24 02:09:12,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:12,126 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] [2020-10-24 02:09:12,127 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:12,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:12,136 INFO L82 PathProgramCache]: Analyzing trace with hash 557729620, now seen corresponding path program 1 times [2020-10-24 02:09:12,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:12,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319089182] [2020-10-24 02:09:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:12,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:12,724 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 02:09:12,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319089182] [2020-10-24 02:09:12,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:09:12,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 02:09:12,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413261327] [2020-10-24 02:09:12,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 02:09:12,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:12,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 02:09:12,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-24 02:09:12,753 INFO L87 Difference]: Start difference. First operand 468 states. Second operand 5 states. [2020-10-24 02:09:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:16,320 INFO L93 Difference]: Finished difference Result 1239 states and 1811 transitions. [2020-10-24 02:09:16,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:09:16,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-24 02:09:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:16,361 INFO L225 Difference]: With dead ends: 1239 [2020-10-24 02:09:16,361 INFO L226 Difference]: Without dead ends: 716 [2020-10-24 02:09:16,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:09:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2020-10-24 02:09:16,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 704. [2020-10-24 02:09:16,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2020-10-24 02:09:16,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 935 transitions. [2020-10-24 02:09:16,612 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 935 transitions. Word has length 85 [2020-10-24 02:09:16,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:16,616 INFO L481 AbstractCegarLoop]: Abstraction has 704 states and 935 transitions. [2020-10-24 02:09:16,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 02:09:16,639 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 935 transitions. [2020-10-24 02:09:16,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-24 02:09:16,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:16,661 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-24 02:09:16,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:09:16,662 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:16,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:16,663 INFO L82 PathProgramCache]: Analyzing trace with hash 675192484, now seen corresponding path program 1 times [2020-10-24 02:09:16,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:16,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358006042] [2020-10-24 02:09:16,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:16,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:17,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:17,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:09:17,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358006042] [2020-10-24 02:09:17,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:09:17,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 02:09:17,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926750892] [2020-10-24 02:09:17,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 02:09:17,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:17,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 02:09:17,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-24 02:09:17,218 INFO L87 Difference]: Start difference. First operand 704 states and 935 transitions. Second operand 8 states. [2020-10-24 02:09:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:20,150 INFO L93 Difference]: Finished difference Result 1569 states and 2140 transitions. [2020-10-24 02:09:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 02:09:20,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-24 02:09:20,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:20,162 INFO L225 Difference]: With dead ends: 1569 [2020-10-24 02:09:20,163 INFO L226 Difference]: Without dead ends: 888 [2020-10-24 02:09:20,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-24 02:09:20,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2020-10-24 02:09:20,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 862. [2020-10-24 02:09:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 862 states. [2020-10-24 02:09:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1099 transitions. [2020-10-24 02:09:20,340 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1099 transitions. Word has length 168 [2020-10-24 02:09:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:20,340 INFO L481 AbstractCegarLoop]: Abstraction has 862 states and 1099 transitions. [2020-10-24 02:09:20,341 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 02:09:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1099 transitions. [2020-10-24 02:09:20,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-24 02:09:20,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:20,345 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-24 02:09:20,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:09:20,345 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:20,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:20,346 INFO L82 PathProgramCache]: Analyzing trace with hash 791724655, now seen corresponding path program 1 times [2020-10-24 02:09:20,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:20,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225908017] [2020-10-24 02:09:20,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:20,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:20,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:09:20,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225908017] [2020-10-24 02:09:20,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:20,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-24 02:09:20,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627020602] [2020-10-24 02:09:20,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-24 02:09:20,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:20,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-24 02:09:20,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-24 02:09:20,917 INFO L87 Difference]: Start difference. First operand 862 states and 1099 transitions. Second operand 13 states. [2020-10-24 02:09:25,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:25,122 INFO L93 Difference]: Finished difference Result 2544 states and 3505 transitions. [2020-10-24 02:09:25,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 02:09:25,123 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 174 [2020-10-24 02:09:25,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:25,146 INFO L225 Difference]: With dead ends: 2544 [2020-10-24 02:09:25,146 INFO L226 Difference]: Without dead ends: 1662 [2020-10-24 02:09:25,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-10-24 02:09:25,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2020-10-24 02:09:25,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1365. [2020-10-24 02:09:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1365 states. [2020-10-24 02:09:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1820 transitions. [2020-10-24 02:09:25,425 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1820 transitions. Word has length 174 [2020-10-24 02:09:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:25,426 INFO L481 AbstractCegarLoop]: Abstraction has 1365 states and 1820 transitions. [2020-10-24 02:09:25,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-24 02:09:25,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1820 transitions. [2020-10-24 02:09:25,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-24 02:09:25,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:25,431 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-24 02:09:25,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 02:09:25,431 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:25,432 INFO L82 PathProgramCache]: Analyzing trace with hash -944358045, now seen corresponding path program 1 times [2020-10-24 02:09:25,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:25,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332601088] [2020-10-24 02:09:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:25,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:09:25,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332601088] [2020-10-24 02:09:25,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:09:25,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 02:09:25,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979323777] [2020-10-24 02:09:25,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:09:25,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:25,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:09:25,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:09:25,675 INFO L87 Difference]: Start difference. First operand 1365 states and 1820 transitions. Second operand 7 states. [2020-10-24 02:09:28,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:28,703 INFO L93 Difference]: Finished difference Result 3403 states and 4719 transitions. [2020-10-24 02:09:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-24 02:09:28,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 183 [2020-10-24 02:09:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:28,724 INFO L225 Difference]: With dead ends: 3403 [2020-10-24 02:09:28,724 INFO L226 Difference]: Without dead ends: 2061 [2020-10-24 02:09:28,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:09:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2020-10-24 02:09:29,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1851. [2020-10-24 02:09:29,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1851 states. [2020-10-24 02:09:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2406 transitions. [2020-10-24 02:09:29,072 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2406 transitions. Word has length 183 [2020-10-24 02:09:29,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:29,072 INFO L481 AbstractCegarLoop]: Abstraction has 1851 states and 2406 transitions. [2020-10-24 02:09:29,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:09:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2406 transitions. [2020-10-24 02:09:29,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-24 02:09:29,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:29,079 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:29,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-24 02:09:29,079 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:29,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:29,080 INFO L82 PathProgramCache]: Analyzing trace with hash 54411606, now seen corresponding path program 1 times [2020-10-24 02:09:29,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:29,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376394786] [2020-10-24 02:09:29,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:29,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:29,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:09:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 02:09:29,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376394786] [2020-10-24 02:09:29,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:29,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 02:09:29,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388329086] [2020-10-24 02:09:29,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:09:29,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:29,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:09:29,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:09:29,435 INFO L87 Difference]: Start difference. First operand 1851 states and 2406 transitions. Second operand 7 states. [2020-10-24 02:09:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:33,265 INFO L93 Difference]: Finished difference Result 5119 states and 7026 transitions. [2020-10-24 02:09:33,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 02:09:33,266 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 253 [2020-10-24 02:09:33,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:33,304 INFO L225 Difference]: With dead ends: 5119 [2020-10-24 02:09:33,304 INFO L226 Difference]: Without dead ends: 3291 [2020-10-24 02:09:33,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:09:33,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2020-10-24 02:09:33,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 2785. [2020-10-24 02:09:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2020-10-24 02:09:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3639 transitions. [2020-10-24 02:09:33,866 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3639 transitions. Word has length 253 [2020-10-24 02:09:33,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:33,866 INFO L481 AbstractCegarLoop]: Abstraction has 2785 states and 3639 transitions. [2020-10-24 02:09:33,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:09:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3639 transitions. [2020-10-24 02:09:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-24 02:09:33,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:33,876 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-24 02:09:33,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-24 02:09:33,877 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:33,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1636139253, now seen corresponding path program 1 times [2020-10-24 02:09:33,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:33,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999310342] [2020-10-24 02:09:33,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:33,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:34,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:34,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-24 02:09:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 120 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-24 02:09:34,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999310342] [2020-10-24 02:09:34,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:34,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-24 02:09:34,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609118485] [2020-10-24 02:09:34,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-24 02:09:34,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:34,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-24 02:09:34,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:09:34,510 INFO L87 Difference]: Start difference. First operand 2785 states and 3639 transitions. Second operand 11 states. [2020-10-24 02:09:34,720 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-24 02:09:35,244 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-24 02:09:36,216 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-24 02:09:37,016 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-10-24 02:09:39,726 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-24 02:09:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:40,423 INFO L93 Difference]: Finished difference Result 6848 states and 8725 transitions. [2020-10-24 02:09:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-24 02:09:40,423 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2020-10-24 02:09:40,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:40,456 INFO L225 Difference]: With dead ends: 6848 [2020-10-24 02:09:40,456 INFO L226 Difference]: Without dead ends: 4096 [2020-10-24 02:09:40,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2020-10-24 02:09:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4096 states. [2020-10-24 02:09:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4096 to 3502. [2020-10-24 02:09:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3502 states. [2020-10-24 02:09:41,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3502 states to 3502 states and 4303 transitions. [2020-10-24 02:09:41,164 INFO L78 Accepts]: Start accepts. Automaton has 3502 states and 4303 transitions. Word has length 260 [2020-10-24 02:09:41,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:41,164 INFO L481 AbstractCegarLoop]: Abstraction has 3502 states and 4303 transitions. [2020-10-24 02:09:41,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-24 02:09:41,164 INFO L276 IsEmpty]: Start isEmpty. Operand 3502 states and 4303 transitions. [2020-10-24 02:09:41,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-24 02:09:41,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:41,173 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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] [2020-10-24 02:09:41,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-24 02:09:41,174 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:41,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:41,175 INFO L82 PathProgramCache]: Analyzing trace with hash -962322565, now seen corresponding path program 1 times [2020-10-24 02:09:41,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:41,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833274101] [2020-10-24 02:09:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:41,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:41,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:41,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-24 02:09:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-24 02:09:41,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833274101] [2020-10-24 02:09:41,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:41,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 02:09:41,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419239860] [2020-10-24 02:09:41,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:09:41,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:41,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:09:41,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:09:41,559 INFO L87 Difference]: Start difference. First operand 3502 states and 4303 transitions. Second operand 7 states. [2020-10-24 02:09:44,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:44,970 INFO L93 Difference]: Finished difference Result 7481 states and 9414 transitions. [2020-10-24 02:09:44,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 02:09:44,971 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-24 02:09:44,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:44,998 INFO L225 Difference]: With dead ends: 7481 [2020-10-24 02:09:44,999 INFO L226 Difference]: Without dead ends: 4152 [2020-10-24 02:09:45,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:09:45,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4152 states. [2020-10-24 02:09:45,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4152 to 4116. [2020-10-24 02:09:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4116 states. [2020-10-24 02:09:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4116 states to 4116 states and 4878 transitions. [2020-10-24 02:09:45,891 INFO L78 Accepts]: Start accepts. Automaton has 4116 states and 4878 transitions. Word has length 307 [2020-10-24 02:09:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:45,891 INFO L481 AbstractCegarLoop]: Abstraction has 4116 states and 4878 transitions. [2020-10-24 02:09:45,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:09:45,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4116 states and 4878 transitions. [2020-10-24 02:09:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2020-10-24 02:09:45,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:45,900 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:45,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-24 02:09:45,901 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:45,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:45,901 INFO L82 PathProgramCache]: Analyzing trace with hash 966683625, now seen corresponding path program 1 times [2020-10-24 02:09:45,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:45,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349841932] [2020-10-24 02:09:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:46,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:46,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:46,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:09:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:46,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-24 02:09:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 146 proven. 70 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-24 02:09:46,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349841932] [2020-10-24 02:09:46,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:46,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-24 02:09:46,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141749454] [2020-10-24 02:09:46,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-24 02:09:46,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:46,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-24 02:09:46,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-24 02:09:46,668 INFO L87 Difference]: Start difference. First operand 4116 states and 4878 transitions. Second operand 17 states. [2020-10-24 02:09:46,875 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-24 02:09:47,540 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-24 02:09:48,218 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-10-24 02:09:48,680 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-24 02:09:55,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:09:55,581 INFO L93 Difference]: Finished difference Result 11589 states and 13971 transitions. [2020-10-24 02:09:55,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-24 02:09:55,582 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 348 [2020-10-24 02:09:55,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:09:55,632 INFO L225 Difference]: With dead ends: 11589 [2020-10-24 02:09:55,632 INFO L226 Difference]: Without dead ends: 7646 [2020-10-24 02:09:55,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2020-10-24 02:09:55,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7646 states. [2020-10-24 02:09:56,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7646 to 6131. [2020-10-24 02:09:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6131 states. [2020-10-24 02:09:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6131 states to 6131 states and 7328 transitions. [2020-10-24 02:09:56,842 INFO L78 Accepts]: Start accepts. Automaton has 6131 states and 7328 transitions. Word has length 348 [2020-10-24 02:09:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:09:56,843 INFO L481 AbstractCegarLoop]: Abstraction has 6131 states and 7328 transitions. [2020-10-24 02:09:56,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-24 02:09:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6131 states and 7328 transitions. [2020-10-24 02:09:56,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2020-10-24 02:09:56,853 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:09:56,854 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 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] [2020-10-24 02:09:56,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-24 02:09:56,854 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:09:56,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:09:56,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1742832483, now seen corresponding path program 1 times [2020-10-24 02:09:56,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:09:56,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34948499] [2020-10-24 02:09:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:09:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:57,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:09:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:57,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:09:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:57,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-24 02:09:57,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:09:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 123 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-24 02:09:57,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34948499] [2020-10-24 02:09:57,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:09:57,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:09:57,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939694087] [2020-10-24 02:09:57,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:09:57,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:09:57,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:09:57,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:09:57,406 INFO L87 Difference]: Start difference. First operand 6131 states and 7328 transitions. Second operand 10 states. [2020-10-24 02:10:01,117 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-24 02:10:01,458 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-24 02:10:05,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:10:05,907 INFO L93 Difference]: Finished difference Result 13550 states and 16482 transitions. [2020-10-24 02:10:05,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-24 02:10:05,908 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 360 [2020-10-24 02:10:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:10:05,950 INFO L225 Difference]: With dead ends: 13550 [2020-10-24 02:10:05,951 INFO L226 Difference]: Without dead ends: 7552 [2020-10-24 02:10:05,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:10:05,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7552 states. [2020-10-24 02:10:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7552 to 6450. [2020-10-24 02:10:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6450 states. [2020-10-24 02:10:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6450 states to 6450 states and 7482 transitions. [2020-10-24 02:10:07,392 INFO L78 Accepts]: Start accepts. Automaton has 6450 states and 7482 transitions. Word has length 360 [2020-10-24 02:10:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:10:07,393 INFO L481 AbstractCegarLoop]: Abstraction has 6450 states and 7482 transitions. [2020-10-24 02:10:07,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:10:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 6450 states and 7482 transitions. [2020-10-24 02:10:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-10-24 02:10:07,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:10:07,406 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, 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, 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] [2020-10-24 02:10:07,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-24 02:10:07,406 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:10:07,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:10:07,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1817276868, now seen corresponding path program 1 times [2020-10-24 02:10:07,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:10:07,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549639061] [2020-10-24 02:10:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:10:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:07,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:10:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:07,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:10:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:07,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 02:10:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:07,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:10:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-24 02:10:07,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549639061] [2020-10-24 02:10:07,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:10:07,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-24 02:10:07,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891729528] [2020-10-24 02:10:07,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:10:07,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:10:08,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:10:08,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:10:08,000 INFO L87 Difference]: Start difference. First operand 6450 states and 7482 transitions. Second operand 7 states. [2020-10-24 02:10:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:10:12,544 INFO L93 Difference]: Finished difference Result 12121 states and 14134 transitions. [2020-10-24 02:10:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-24 02:10:12,549 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 402 [2020-10-24 02:10:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:10:12,582 INFO L225 Difference]: With dead ends: 12121 [2020-10-24 02:10:12,582 INFO L226 Difference]: Without dead ends: 6631 [2020-10-24 02:10:12,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-24 02:10:12,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6631 states. [2020-10-24 02:10:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6631 to 6461. [2020-10-24 02:10:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6461 states. [2020-10-24 02:10:14,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6461 states to 6461 states and 7239 transitions. [2020-10-24 02:10:14,087 INFO L78 Accepts]: Start accepts. Automaton has 6461 states and 7239 transitions. Word has length 402 [2020-10-24 02:10:14,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:10:14,088 INFO L481 AbstractCegarLoop]: Abstraction has 6461 states and 7239 transitions. [2020-10-24 02:10:14,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:10:14,088 INFO L276 IsEmpty]: Start isEmpty. Operand 6461 states and 7239 transitions. [2020-10-24 02:10:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-24 02:10:14,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:10:14,101 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, 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, 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] [2020-10-24 02:10:14,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-24 02:10:14,101 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:10:14,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:10:14,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1947850273, now seen corresponding path program 1 times [2020-10-24 02:10:14,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:10:14,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114094061] [2020-10-24 02:10:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:10:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:14,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:10:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:14,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:10:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:14,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-24 02:10:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:14,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-10-24 02:10:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 344 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-24 02:10:14,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114094061] [2020-10-24 02:10:14,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:10:14,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-24 02:10:14,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845621033] [2020-10-24 02:10:14,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 02:10:14,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:10:14,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 02:10:14,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:10:14,628 INFO L87 Difference]: Start difference. First operand 6461 states and 7239 transitions. Second operand 10 states. [2020-10-24 02:10:15,199 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-24 02:10:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:10:20,975 INFO L93 Difference]: Finished difference Result 14523 states and 16307 transitions. [2020-10-24 02:10:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-24 02:10:20,978 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 411 [2020-10-24 02:10:20,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:10:21,011 INFO L225 Difference]: With dead ends: 14523 [2020-10-24 02:10:21,012 INFO L226 Difference]: Without dead ends: 6639 [2020-10-24 02:10:21,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2020-10-24 02:10:21,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6639 states. [2020-10-24 02:10:22,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6639 to 5587. [2020-10-24 02:10:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5587 states. [2020-10-24 02:10:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 6025 transitions. [2020-10-24 02:10:22,157 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 6025 transitions. Word has length 411 [2020-10-24 02:10:22,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:10:22,158 INFO L481 AbstractCegarLoop]: Abstraction has 5587 states and 6025 transitions. [2020-10-24 02:10:22,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 02:10:22,158 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 6025 transitions. [2020-10-24 02:10:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-24 02:10:22,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:10:22,243 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 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] [2020-10-24 02:10:22,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-24 02:10:22,243 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:10:22,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:10:22,244 INFO L82 PathProgramCache]: Analyzing trace with hash 759688640, now seen corresponding path program 1 times [2020-10-24 02:10:22,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:10:22,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269458478] [2020-10-24 02:10:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:10:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:22,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:10:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:22,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:10:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-24 02:10:22,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:22,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-24 02:10:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:22,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-10-24 02:10:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:22,971 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 525 proven. 42 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-10-24 02:10:22,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269458478] [2020-10-24 02:10:22,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:10:22,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-24 02:10:22,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356674706] [2020-10-24 02:10:22,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-24 02:10:22,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:10:22,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-24 02:10:22,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-24 02:10:22,973 INFO L87 Difference]: Start difference. First operand 5587 states and 6025 transitions. Second operand 15 states. [2020-10-24 02:10:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:10:30,564 INFO L93 Difference]: Finished difference Result 12567 states and 13623 transitions. [2020-10-24 02:10:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-24 02:10:30,565 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 431 [2020-10-24 02:10:30,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:10:30,597 INFO L225 Difference]: With dead ends: 12567 [2020-10-24 02:10:30,597 INFO L226 Difference]: Without dead ends: 7779 [2020-10-24 02:10:30,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2020-10-24 02:10:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7779 states. [2020-10-24 02:10:32,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7779 to 6520. [2020-10-24 02:10:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6520 states. [2020-10-24 02:10:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 7053 transitions. [2020-10-24 02:10:32,056 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 7053 transitions. Word has length 431 [2020-10-24 02:10:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:10:32,057 INFO L481 AbstractCegarLoop]: Abstraction has 6520 states and 7053 transitions. [2020-10-24 02:10:32,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-24 02:10:32,057 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 7053 transitions. [2020-10-24 02:10:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-10-24 02:10:32,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:10:32,074 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2020-10-24 02:10:32,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-24 02:10:32,075 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:10:32,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:10:32,075 INFO L82 PathProgramCache]: Analyzing trace with hash -890341699, now seen corresponding path program 1 times [2020-10-24 02:10:32,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:10:32,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241534358] [2020-10-24 02:10:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:10:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:32,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:10:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:32,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-24 02:10:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:32,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-24 02:10:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:32,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-24 02:10:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:32,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2020-10-24 02:10:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:10:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 458 proven. 253 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-24 02:10:33,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241534358] [2020-10-24 02:10:33,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-24 02:10:33,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-24 02:10:33,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62192275] [2020-10-24 02:10:33,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-24 02:10:33,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:10:33,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-24 02:10:33,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-10-24 02:10:33,280 INFO L87 Difference]: Start difference. First operand 6520 states and 7053 transitions. Second operand 21 states. [2020-10-24 02:10:34,082 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-10-24 02:10:34,281 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-24 02:10:39,222 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-10-24 02:10:46,529 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-10-24 02:10:47,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:10:47,951 INFO L93 Difference]: Finished difference Result 15924 states and 17339 transitions. [2020-10-24 02:10:47,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-24 02:10:47,952 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 535 [2020-10-24 02:10:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:10:47,967 INFO L225 Difference]: With dead ends: 15924 [2020-10-24 02:10:47,967 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:10:47,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1656 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=939, Invalid=4173, Unknown=0, NotChecked=0, Total=5112 [2020-10-24 02:10:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:10:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:10:47,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:10:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:10:47,984 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 535 [2020-10-24 02:10:47,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:10:47,984 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:10:47,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-24 02:10:47,985 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:10:47,985 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:10:47,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-24 02:10:47,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:10:51,097 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-24 02:10:51,324 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2020-10-24 02:11:36,785 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-10-24 02:11:54,260 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-10-24 02:12:10,174 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-10-24 02:12:10,595 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-10-24 02:12:10,996 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-10-24 02:12:32,388 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-10-24 02:12:43,306 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 274 [2020-10-24 02:12:44,748 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 274 [2020-10-24 02:12:46,190 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 358 DAG size of output: 274 [2020-10-24 02:12:46,754 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 274 [2020-10-24 02:13:17,553 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 163 [2020-10-24 02:13:17,709 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 165 [2020-10-24 02:13:18,148 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 163 [2020-10-24 02:13:18,739 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 189 [2020-10-24 02:13:19,405 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2020-10-24 02:13:20,049 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2020-10-24 02:13:20,296 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 164 [2020-10-24 02:13:21,128 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 164 [2020-10-24 02:13:21,234 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 165 [2020-10-24 02:13:21,740 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 172 [2020-10-24 02:13:22,578 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 163 [2020-10-24 02:13:22,722 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 165 [2020-10-24 02:13:23,166 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 163 [2020-10-24 02:13:23,746 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 189 [2020-10-24 02:13:24,405 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2020-10-24 02:13:25,055 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 169 [2020-10-24 02:13:25,301 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 164 [2020-10-24 02:13:26,118 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 164 [2020-10-24 02:13:26,226 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 165 [2020-10-24 02:13:26,736 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 172 [2020-10-24 02:14:41,477 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 272 DAG size of output: 79 [2020-10-24 02:14:43,750 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 281 DAG size of output: 88 [2020-10-24 02:14:45,980 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 315 DAG size of output: 79 [2020-10-24 02:14:48,065 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 272 DAG size of output: 78 [2020-10-24 02:14:50,367 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 314 DAG size of output: 79 [2020-10-24 02:14:52,631 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 319 DAG size of output: 80 [2020-10-24 02:14:55,024 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 287 DAG size of output: 93 [2020-10-24 02:14:57,108 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 309 DAG size of output: 84 [2020-10-24 02:14:59,466 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 322 DAG size of output: 80 [2020-10-24 02:15:02,225 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 315 DAG size of output: 84 [2020-10-24 02:15:07,276 WARN L193 SmtUtils]: Spent 5.03 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:15:12,288 WARN L193 SmtUtils]: Spent 4.99 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:15:14,284 WARN L193 SmtUtils]: Spent 1.98 s on a formula simplification. DAG size of input: 285 DAG size of output: 84 [2020-10-24 02:15:16,509 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 285 DAG size of output: 90 [2020-10-24 02:15:18,637 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 279 DAG size of output: 91 [2020-10-24 02:15:20,647 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 288 DAG size of output: 80 [2020-10-24 02:15:22,666 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 287 DAG size of output: 83 [2020-10-24 02:15:24,769 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 278 DAG size of output: 80 [2020-10-24 02:15:29,895 WARN L193 SmtUtils]: Spent 5.11 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:15:31,859 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 276 DAG size of output: 82 [2020-10-24 02:15:34,213 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 287 DAG size of output: 93 [2020-10-24 02:15:36,336 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 277 DAG size of output: 87 [2020-10-24 02:15:41,491 WARN L193 SmtUtils]: Spent 5.14 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:15:46,577 WARN L193 SmtUtils]: Spent 5.07 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:15:51,680 WARN L193 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:15:56,789 WARN L193 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:15:59,545 WARN L193 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 324 DAG size of output: 79 [2020-10-24 02:16:01,951 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 281 DAG size of output: 85 [2020-10-24 02:16:04,420 WARN L193 SmtUtils]: Spent 2.45 s on a formula simplification. DAG size of input: 279 DAG size of output: 90 [2020-10-24 02:16:06,492 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 284 DAG size of output: 83 [2020-10-24 02:16:08,757 WARN L193 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 274 DAG size of output: 83 [2020-10-24 02:16:11,278 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 314 DAG size of output: 79 [2020-10-24 02:16:13,018 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 296 DAG size of output: 76 [2020-10-24 02:16:17,856 WARN L193 SmtUtils]: Spent 4.82 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:16:22,674 WARN L193 SmtUtils]: Spent 4.80 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:16:27,473 WARN L193 SmtUtils]: Spent 4.78 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:16:29,126 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:16:30,792 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:16:32,441 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:16:37,278 WARN L193 SmtUtils]: Spent 4.82 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:16:38,935 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:16:40,582 WARN L193 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:16:45,337 WARN L193 SmtUtils]: Spent 4.73 s on a formula simplification. DAG size of input: 533 DAG size of output: 92 [2020-10-24 02:16:46,963 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:16:51,738 WARN L193 SmtUtils]: Spent 4.76 s on a formula simplification. DAG size of input: 533 DAG size of output: 95 [2020-10-24 02:16:53,547 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 296 DAG size of output: 76 [2020-10-24 02:16:58,424 WARN L193 SmtUtils]: Spent 4.86 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:17:03,325 WARN L193 SmtUtils]: Spent 4.86 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:17:08,205 WARN L193 SmtUtils]: Spent 4.86 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:17:09,861 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:17:11,516 WARN L193 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:17:13,188 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:17:18,077 WARN L193 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:17:22,884 WARN L193 SmtUtils]: Spent 4.79 s on a formula simplification. DAG size of input: 533 DAG size of output: 92 [2020-10-24 02:17:25,590 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 284 DAG size of output: 89 [2020-10-24 02:17:28,401 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 348 DAG size of output: 87 [2020-10-24 02:17:30,749 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 281 DAG size of output: 88 [2020-10-24 02:17:32,859 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 288 DAG size of output: 82 [2020-10-24 02:17:35,144 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 277 DAG size of output: 83 [2020-10-24 02:17:37,275 WARN L193 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 277 DAG size of output: 87 [2020-10-24 02:17:39,242 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 271 DAG size of output: 78 [2020-10-24 02:17:41,605 WARN L193 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 284 DAG size of output: 88 [2020-10-24 02:17:43,543 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 281 DAG size of output: 81 [2020-10-24 02:17:46,158 WARN L193 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 324 DAG size of output: 86 [2020-10-24 02:17:48,306 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 273 DAG size of output: 77 [2020-10-24 02:17:50,536 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 279 DAG size of output: 91 [2020-10-24 02:17:55,845 WARN L193 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:18:01,160 WARN L193 SmtUtils]: Spent 5.29 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:18:03,821 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 318 DAG size of output: 80 [2020-10-24 02:18:06,191 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 281 DAG size of output: 88 [2020-10-24 02:18:11,548 WARN L193 SmtUtils]: Spent 5.34 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:18:13,746 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 316 DAG size of output: 79 [2020-10-24 02:18:19,073 WARN L193 SmtUtils]: Spent 5.31 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:18:21,578 WARN L193 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 322 DAG size of output: 80 [2020-10-24 02:18:26,923 WARN L193 SmtUtils]: Spent 5.32 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:18:29,330 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 322 DAG size of output: 85 [2020-10-24 02:18:31,953 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 280 DAG size of output: 92 [2020-10-24 02:18:34,658 WARN L193 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 359 DAG size of output: 90 [2020-10-24 02:18:36,421 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 273 DAG size of output: 76 [2020-10-24 02:18:38,490 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 282 DAG size of output: 79 [2020-10-24 02:18:40,649 WARN L193 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 272 DAG size of output: 79 [2020-10-24 02:18:42,950 WARN L193 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 277 DAG size of output: 83 [2020-10-24 02:18:45,094 WARN L193 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 276 DAG size of output: 87 [2020-10-24 02:18:47,172 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 271 DAG size of output: 80 [2020-10-24 02:18:49,578 WARN L193 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 280 DAG size of output: 89 [2020-10-24 02:18:51,553 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 276 DAG size of output: 83 [2020-10-24 02:18:53,748 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 272 DAG size of output: 85 [2020-10-24 02:18:55,801 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 270 DAG size of output: 78 [2020-10-24 02:18:57,527 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:18:59,220 WARN L193 SmtUtils]: Spent 1.68 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:19:01,968 WARN L193 SmtUtils]: Spent 2.73 s on a formula simplification. DAG size of input: 335 DAG size of output: 87 [2020-10-24 02:19:04,632 WARN L193 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 314 DAG size of output: 79 [2020-10-24 02:19:10,091 WARN L193 SmtUtils]: Spent 5.44 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:19:12,383 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 279 DAG size of output: 81 [2020-10-24 02:19:15,004 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 284 DAG size of output: 98 [2020-10-24 02:19:17,247 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 280 DAG size of output: 88 [2020-10-24 02:19:19,402 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 307 DAG size of output: 79 [2020-10-24 02:19:21,645 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification. DAG size of input: 273 DAG size of output: 77 [2020-10-24 02:19:24,454 WARN L193 SmtUtils]: Spent 2.79 s on a formula simplification. DAG size of input: 333 DAG size of output: 79 [2020-10-24 02:19:27,300 WARN L193 SmtUtils]: Spent 2.83 s on a formula simplification. DAG size of input: 279 DAG size of output: 98 [2020-10-24 02:19:32,760 WARN L193 SmtUtils]: Spent 5.44 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:19:38,160 WARN L193 SmtUtils]: Spent 5.38 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:19:40,089 WARN L193 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 253 DAG size of output: 61 [2020-10-24 02:19:45,508 WARN L193 SmtUtils]: Spent 5.40 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:19:47,716 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 274 DAG size of output: 81 [2020-10-24 02:19:49,445 WARN L193 SmtUtils]: Spent 1.71 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:19:54,551 WARN L193 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:20:00,022 WARN L193 SmtUtils]: Spent 5.45 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:20:02,109 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 305 DAG size of output: 83 [2020-10-24 02:20:07,669 WARN L193 SmtUtils]: Spent 5.54 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:20:13,242 WARN L193 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:20:15,641 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 319 DAG size of output: 80 [2020-10-24 02:20:17,990 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 287 DAG size of output: 81 [2020-10-24 02:20:20,890 WARN L193 SmtUtils]: Spent 2.89 s on a formula simplification. DAG size of input: 280 DAG size of output: 89 [2020-10-24 02:20:22,998 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 275 DAG size of output: 82 [2020-10-24 02:20:25,193 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 275 DAG size of output: 83 [2020-10-24 02:20:27,741 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 322 DAG size of output: 82 [2020-10-24 02:20:29,507 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:20:34,801 WARN L193 SmtUtils]: Spent 5.27 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:20:39,983 WARN L193 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 533 DAG size of output: 92 [2020-10-24 02:20:45,263 WARN L193 SmtUtils]: Spent 5.26 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:20:47,177 WARN L193 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 296 DAG size of output: 76 [2020-10-24 02:20:48,941 WARN L193 SmtUtils]: Spent 1.75 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:20:50,718 WARN L193 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 300 DAG size of output: 69 [2020-10-24 02:20:55,980 WARN L193 SmtUtils]: Spent 5.24 s on a formula simplification. DAG size of input: 530 DAG size of output: 97 [2020-10-24 02:20:59,151 WARN L193 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 363 DAG size of output: 88 [2020-10-24 02:21:04,734 WARN L193 SmtUtils]: Spent 5.56 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:21:06,944 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 274 DAG size of output: 81 [2020-10-24 02:21:09,660 WARN L193 SmtUtils]: Spent 2.70 s on a formula simplification. DAG size of input: 272 DAG size of output: 87 [2020-10-24 02:21:15,393 WARN L193 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:21:21,095 WARN L193 SmtUtils]: Spent 5.68 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:21:23,091 WARN L193 SmtUtils]: Spent 1.99 s on a formula simplification. DAG size of input: 253 DAG size of output: 61 [2020-10-24 02:21:25,296 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 284 DAG size of output: 81 [2020-10-24 02:21:28,119 WARN L193 SmtUtils]: Spent 2.80 s on a formula simplification. DAG size of input: 283 DAG size of output: 95 [2020-10-24 02:21:30,814 WARN L193 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 321 DAG size of output: 81 [2020-10-24 02:21:36,546 WARN L193 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:21:38,922 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 277 DAG size of output: 84 [2020-10-24 02:21:41,350 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 278 DAG size of output: 92 [2020-10-24 02:21:43,688 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 280 DAG size of output: 81 [2020-10-24 02:21:49,411 WARN L193 SmtUtils]: Spent 5.70 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:21:55,136 WARN L193 SmtUtils]: Spent 5.71 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:21:58,048 WARN L193 SmtUtils]: Spent 2.90 s on a formula simplification. DAG size of input: 279 DAG size of output: 88 [2020-10-24 02:22:03,915 WARN L193 SmtUtils]: Spent 5.85 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:22:09,787 WARN L193 SmtUtils]: Spent 5.85 s on a formula simplification. DAG size of input: 516 DAG size of output: 104 [2020-10-24 02:22:12,171 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 274 DAG size of output: 87 [2020-10-24 02:22:14,669 WARN L193 SmtUtils]: Spent 2.48 s on a formula simplification. DAG size of input: 290 DAG size of output: 84 [2020-10-24 02:22:16,959 WARN L193 SmtUtils]: Spent 2.27 s on a formula simplification. DAG size of input: 280 DAG size of output: 83 [2020-10-24 02:22:19,792 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification. DAG size of input: 327 DAG size of output: 82 [2020-10-24 02:22:22,421 WARN L193 SmtUtils]: Spent 2.61 s on a formula simplification. DAG size of input: 316 DAG size of output: 86 [2020-10-24 02:22:24,755 WARN L193 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 277 DAG size of output: 80 [2020-10-24 02:22:27,530 WARN L193 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 291 DAG size of output: 91