java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 07:25:21,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 07:25:21,424 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 07:25:21,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 07:25:21,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 07:25:21,474 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 07:25:21,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 07:25:21,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 07:25:21,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 07:25:21,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 07:25:21,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 07:25:21,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 07:25:21,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 07:25:21,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 07:25:21,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 07:25:21,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 07:25:21,501 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 07:25:21,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 07:25:21,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 07:25:21,502 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 07:25:21,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 07:25:21,503 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 07:25:21,503 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 07:25:21,503 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 07:25:21,504 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 07:25:21,504 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 07:25:21,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 07:25:21,505 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 07:25:21,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 07:25:21,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 07:25:21,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 07:25:21,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 07:25:21,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 07:25:21,506 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 07:25:21,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 07:25:21,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 07:25:21,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 07:25:21,507 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 07:25:21,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 07:25:21,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 07:25:21,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 07:25:21,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 07:25:21,508 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 07:25:21,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 07:25:21,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 07:25:21,509 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 07:25:21,547 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 07:25:21,561 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 07:25:21,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 07:25:21,565 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 07:25:21,566 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 07:25:21,567 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 07:25:21,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5c5fac9/5f3a7c256a854113b4039921383dcc1a/FLAG5d19c9ce3 [2019-09-10 07:25:22,055 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 07:25:22,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 07:25:22,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5c5fac9/5f3a7c256a854113b4039921383dcc1a/FLAG5d19c9ce3 [2019-09-10 07:25:22,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab5c5fac9/5f3a7c256a854113b4039921383dcc1a [2019-09-10 07:25:22,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 07:25:22,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 07:25:22,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 07:25:22,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 07:25:22,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 07:25:22,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 07:25:22" (1/1) ... [2019-09-10 07:25:22,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15b5712d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:22, skipping insertion in model container [2019-09-10 07:25:22,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 07:25:22" (1/1) ... [2019-09-10 07:25:22,494 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 07:25:22,557 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 07:25:22,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 07:25:22,849 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 07:25:22,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 07:25:23,011 INFO L192 MainTranslator]: Completed translation [2019-09-10 07:25:23,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:23 WrapperNode [2019-09-10 07:25:23,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 07:25:23,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 07:25:23,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 07:25:23,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 07:25:23,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:23" (1/1) ... [2019-09-10 07:25:23,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:23" (1/1) ... [2019-09-10 07:25:23,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:23" (1/1) ... [2019-09-10 07:25:23,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:23" (1/1) ... [2019-09-10 07:25:23,047 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:23" (1/1) ... [2019-09-10 07:25:23,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:23" (1/1) ... [2019-09-10 07:25:23,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:23" (1/1) ... [2019-09-10 07:25:23,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 07:25:23,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 07:25:23,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 07:25:23,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 07:25:23,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:23" (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 [2019-09-10 07:25:23,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 07:25:23,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 07:25:23,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 07:25:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 07:25:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-10 07:25:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-10 07:25:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-10 07:25:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-10 07:25:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-10 07:25:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-10 07:25:23,118 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-10 07:25:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-10 07:25:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-10 07:25:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-10 07:25:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-10 07:25:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 07:25:23,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 07:25:23,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 07:25:23,639 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 07:25:23,640 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 07:25:23,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 07:25:23 BoogieIcfgContainer [2019-09-10 07:25:23,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 07:25:23,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 07:25:23,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 07:25:23,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 07:25:23,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 07:25:22" (1/3) ... [2019-09-10 07:25:23,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ece813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 07:25:23, skipping insertion in model container [2019-09-10 07:25:23,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 07:25:23" (2/3) ... [2019-09-10 07:25:23,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ece813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 07:25:23, skipping insertion in model container [2019-09-10 07:25:23,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 07:25:23" (3/3) ... [2019-09-10 07:25:23,649 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2019-09-10 07:25:23,658 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 07:25:23,665 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 07:25:23,681 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 07:25:23,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 07:25:23,707 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 07:25:23,707 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 07:25:23,707 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 07:25:23,708 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 07:25:23,708 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 07:25:23,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 07:25:23,708 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 07:25:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2019-09-10 07:25:23,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-09-10 07:25:23,730 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:23,731 INFO L399 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] [2019-09-10 07:25:23,733 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:23,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:23,738 INFO L82 PathProgramCache]: Analyzing trace with hash -427904680, now seen corresponding path program 1 times [2019-09-10 07:25:23,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:23,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:23,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:23,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:23,791 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:24,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:25:24,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:25:24,095 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:24,100 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:25:24,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:25:24,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:25:24,114 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2019-09-10 07:25:24,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:24,168 INFO L93 Difference]: Finished difference Result 103 states and 160 transitions. [2019-09-10 07:25:24,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:25:24,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-09-10 07:25:24,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:24,184 INFO L225 Difference]: With dead ends: 103 [2019-09-10 07:25:24,184 INFO L226 Difference]: Without dead ends: 95 [2019-09-10 07:25:24,187 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:25:24,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-09-10 07:25:24,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2019-09-10 07:25:24,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-09-10 07:25:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 134 transitions. [2019-09-10 07:25:24,232 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 134 transitions. Word has length 40 [2019-09-10 07:25:24,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:24,233 INFO L475 AbstractCegarLoop]: Abstraction has 93 states and 134 transitions. [2019-09-10 07:25:24,233 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:25:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 134 transitions. [2019-09-10 07:25:24,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-09-10 07:25:24,236 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:24,236 INFO L399 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] [2019-09-10 07:25:24,236 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:24,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:24,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1893549176, now seen corresponding path program 1 times [2019-09-10 07:25:24,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:24,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:24,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:24,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:24,239 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:24,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:25:24,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:25:24,390 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:24,393 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:25:24,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:25:24,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:25:24,394 INFO L87 Difference]: Start difference. First operand 93 states and 134 transitions. Second operand 3 states. [2019-09-10 07:25:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:24,434 INFO L93 Difference]: Finished difference Result 147 states and 217 transitions. [2019-09-10 07:25:24,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:25:24,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2019-09-10 07:25:24,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:24,438 INFO L225 Difference]: With dead ends: 147 [2019-09-10 07:25:24,438 INFO L226 Difference]: Without dead ends: 147 [2019-09-10 07:25:24,439 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:25:24,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-09-10 07:25:24,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2019-09-10 07:25:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-09-10 07:25:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 216 transitions. [2019-09-10 07:25:24,457 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 216 transitions. Word has length 41 [2019-09-10 07:25:24,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:24,458 INFO L475 AbstractCegarLoop]: Abstraction has 145 states and 216 transitions. [2019-09-10 07:25:24,458 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:25:24,458 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 216 transitions. [2019-09-10 07:25:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-09-10 07:25:24,459 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:24,460 INFO L399 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] [2019-09-10 07:25:24,460 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:24,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:24,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1082568320, now seen corresponding path program 1 times [2019-09-10 07:25:24,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:24,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:24,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:24,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:24,463 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:24,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:24,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:25:24,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:25:24,532 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:24,532 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:25:24,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:25:24,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:25:24,533 INFO L87 Difference]: Start difference. First operand 145 states and 216 transitions. Second operand 3 states. [2019-09-10 07:25:24,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:24,560 INFO L93 Difference]: Finished difference Result 235 states and 353 transitions. [2019-09-10 07:25:24,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:25:24,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2019-09-10 07:25:24,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:24,563 INFO L225 Difference]: With dead ends: 235 [2019-09-10 07:25:24,563 INFO L226 Difference]: Without dead ends: 235 [2019-09-10 07:25:24,564 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:25:24,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2019-09-10 07:25:24,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2019-09-10 07:25:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-09-10 07:25:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 352 transitions. [2019-09-10 07:25:24,612 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 352 transitions. Word has length 42 [2019-09-10 07:25:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:24,612 INFO L475 AbstractCegarLoop]: Abstraction has 233 states and 352 transitions. [2019-09-10 07:25:24,612 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:25:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 352 transitions. [2019-09-10 07:25:24,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 07:25:24,614 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:24,614 INFO L399 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] [2019-09-10 07:25:24,614 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:24,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:24,615 INFO L82 PathProgramCache]: Analyzing trace with hash 304274593, now seen corresponding path program 1 times [2019-09-10 07:25:24,615 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:24,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:24,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:24,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:24,617 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:24,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:25:24,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:25:24,716 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:24,717 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:25:24,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:25:24,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:25:24,717 INFO L87 Difference]: Start difference. First operand 233 states and 352 transitions. Second operand 5 states. [2019-09-10 07:25:24,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:24,850 INFO L93 Difference]: Finished difference Result 233 states and 348 transitions. [2019-09-10 07:25:24,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:25:24,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-10 07:25:24,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:24,854 INFO L225 Difference]: With dead ends: 233 [2019-09-10 07:25:24,854 INFO L226 Difference]: Without dead ends: 233 [2019-09-10 07:25:24,855 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:25:24,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2019-09-10 07:25:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2019-09-10 07:25:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-09-10 07:25:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 348 transitions. [2019-09-10 07:25:24,884 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 348 transitions. Word has length 43 [2019-09-10 07:25:24,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:24,888 INFO L475 AbstractCegarLoop]: Abstraction has 233 states and 348 transitions. [2019-09-10 07:25:24,888 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:25:24,888 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 348 transitions. [2019-09-10 07:25:24,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 07:25:24,889 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:24,889 INFO L399 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] [2019-09-10 07:25:24,889 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:24,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:24,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1578142598, now seen corresponding path program 1 times [2019-09-10 07:25:24,893 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:24,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:24,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:24,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:24,894 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:24,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:25:24,990 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:25:24,990 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:24,991 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:25:24,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:25:24,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:25:24,992 INFO L87 Difference]: Start difference. First operand 233 states and 348 transitions. Second operand 5 states. [2019-09-10 07:25:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:25,092 INFO L93 Difference]: Finished difference Result 233 states and 344 transitions. [2019-09-10 07:25:25,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:25:25,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-10 07:25:25,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:25,097 INFO L225 Difference]: With dead ends: 233 [2019-09-10 07:25:25,097 INFO L226 Difference]: Without dead ends: 233 [2019-09-10 07:25:25,097 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:25:25,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2019-09-10 07:25:25,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2019-09-10 07:25:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2019-09-10 07:25:25,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 344 transitions. [2019-09-10 07:25:25,117 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 344 transitions. Word has length 43 [2019-09-10 07:25:25,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:25,118 INFO L475 AbstractCegarLoop]: Abstraction has 233 states and 344 transitions. [2019-09-10 07:25:25,118 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:25:25,118 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 344 transitions. [2019-09-10 07:25:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-10 07:25:25,121 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:25,121 INFO L399 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] [2019-09-10 07:25:25,121 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:25,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:25,122 INFO L82 PathProgramCache]: Analyzing trace with hash -263887935, now seen corresponding path program 1 times [2019-09-10 07:25:25,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:25,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:25,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:25,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:25,126 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:25,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:25:25,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:25:25,236 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:25,236 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:25:25,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:25:25,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:25:25,237 INFO L87 Difference]: Start difference. First operand 233 states and 344 transitions. Second operand 5 states. [2019-09-10 07:25:25,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:25,318 INFO L93 Difference]: Finished difference Result 863 states and 1291 transitions. [2019-09-10 07:25:25,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:25:25,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-09-10 07:25:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:25,324 INFO L225 Difference]: With dead ends: 863 [2019-09-10 07:25:25,324 INFO L226 Difference]: Without dead ends: 863 [2019-09-10 07:25:25,325 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:25:25,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2019-09-10 07:25:25,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 649. [2019-09-10 07:25:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 649 states. [2019-09-10 07:25:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 968 transitions. [2019-09-10 07:25:25,344 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 968 transitions. Word has length 43 [2019-09-10 07:25:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:25,344 INFO L475 AbstractCegarLoop]: Abstraction has 649 states and 968 transitions. [2019-09-10 07:25:25,344 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:25:25,345 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 968 transitions. [2019-09-10 07:25:25,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-10 07:25:25,345 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:25,346 INFO L399 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] [2019-09-10 07:25:25,346 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:25,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:25,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1086429188, now seen corresponding path program 1 times [2019-09-10 07:25:25,347 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:25,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:25,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:25,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:25,348 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:25,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:25:25,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:25:25,414 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:25,414 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:25:25,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:25:25,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:25:25,415 INFO L87 Difference]: Start difference. First operand 649 states and 968 transitions. Second operand 3 states. [2019-09-10 07:25:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:25,441 INFO L93 Difference]: Finished difference Result 949 states and 1395 transitions. [2019-09-10 07:25:25,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:25:25,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-09-10 07:25:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:25,448 INFO L225 Difference]: With dead ends: 949 [2019-09-10 07:25:25,448 INFO L226 Difference]: Without dead ends: 949 [2019-09-10 07:25:25,449 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:25:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2019-09-10 07:25:25,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 947. [2019-09-10 07:25:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2019-09-10 07:25:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1394 transitions. [2019-09-10 07:25:25,478 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1394 transitions. Word has length 45 [2019-09-10 07:25:25,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:25,478 INFO L475 AbstractCegarLoop]: Abstraction has 947 states and 1394 transitions. [2019-09-10 07:25:25,478 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:25:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1394 transitions. [2019-09-10 07:25:25,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-10 07:25:25,479 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:25,480 INFO L399 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] [2019-09-10 07:25:25,480 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:25,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:25,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1066379845, now seen corresponding path program 1 times [2019-09-10 07:25:25,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:25,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:25,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:25,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:25,483 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:25,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:25:25,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:25:25,702 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:25,703 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:25:25,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:25:25,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:25:25,704 INFO L87 Difference]: Start difference. First operand 947 states and 1394 transitions. Second operand 5 states. [2019-09-10 07:25:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:25,775 INFO L93 Difference]: Finished difference Result 1563 states and 2288 transitions. [2019-09-10 07:25:25,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:25:25,776 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2019-09-10 07:25:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:25,785 INFO L225 Difference]: With dead ends: 1563 [2019-09-10 07:25:25,785 INFO L226 Difference]: Without dead ends: 1563 [2019-09-10 07:25:25,786 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:25:25,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2019-09-10 07:25:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1255. [2019-09-10 07:25:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1255 states. [2019-09-10 07:25:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1826 transitions. [2019-09-10 07:25:25,816 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1826 transitions. Word has length 45 [2019-09-10 07:25:25,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:25,816 INFO L475 AbstractCegarLoop]: Abstraction has 1255 states and 1826 transitions. [2019-09-10 07:25:25,817 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:25:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1826 transitions. [2019-09-10 07:25:25,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-10 07:25:25,817 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:25,818 INFO L399 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] [2019-09-10 07:25:25,818 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:25,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:25,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1300053745, now seen corresponding path program 1 times [2019-09-10 07:25:25,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:25,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:25,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:25,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:25,820 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:25,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:25:25,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:25:25,909 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:25,909 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:25:25,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:25:25,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:25:25,911 INFO L87 Difference]: Start difference. First operand 1255 states and 1826 transitions. Second operand 5 states. [2019-09-10 07:25:25,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:25,993 INFO L93 Difference]: Finished difference Result 2401 states and 3428 transitions. [2019-09-10 07:25:25,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 07:25:25,994 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2019-09-10 07:25:25,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:26,009 INFO L225 Difference]: With dead ends: 2401 [2019-09-10 07:25:26,009 INFO L226 Difference]: Without dead ends: 2401 [2019-09-10 07:25:26,010 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 07:25:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2019-09-10 07:25:26,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 1335. [2019-09-10 07:25:26,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2019-09-10 07:25:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1902 transitions. [2019-09-10 07:25:26,071 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1902 transitions. Word has length 46 [2019-09-10 07:25:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:26,072 INFO L475 AbstractCegarLoop]: Abstraction has 1335 states and 1902 transitions. [2019-09-10 07:25:26,072 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:25:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1902 transitions. [2019-09-10 07:25:26,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 07:25:26,078 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:26,079 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:25:26,079 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:26,080 INFO L82 PathProgramCache]: Analyzing trace with hash 619866378, now seen corresponding path program 1 times [2019-09-10 07:25:26,080 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:26,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:26,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:26,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:26,083 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:26,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:25:26,179 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:25:26,180 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 65 with the following transitions: [2019-09-10 07:25:26,182 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [66], [68], [71], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [130], [133], [139], [142], [145], [147], [162], [164], [167], [170], [172], [187], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:25:26,229 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:25:26,230 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:25:26,390 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:25:26,975 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:25:26,978 INFO L272 AbstractInterpreter]: Visited 59 different actions 441 times. Merged at 36 different actions 331 times. Widened at 15 different actions 55 times. Performed 1576 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1576 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 39 fixpoints after 16 different actions. Largest state had 90 variables. [2019-09-10 07:25:26,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:26,992 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:25:26,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:25:26,992 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:25:27,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:27,007 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:25:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:27,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 07:25:27,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:25:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 07:25:27,181 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:25:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-10 07:25:27,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-09-10 07:25:27,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-09-10 07:25:27,229 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:27,230 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:25:27,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:25:27,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-10 07:25:27,232 INFO L87 Difference]: Start difference. First operand 1335 states and 1902 transitions. Second operand 5 states. [2019-09-10 07:25:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:27,305 INFO L93 Difference]: Finished difference Result 1563 states and 2228 transitions. [2019-09-10 07:25:27,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:25:27,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-10 07:25:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:27,313 INFO L225 Difference]: With dead ends: 1563 [2019-09-10 07:25:27,313 INFO L226 Difference]: Without dead ends: 1563 [2019-09-10 07:25:27,313 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-10 07:25:27,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2019-09-10 07:25:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1335. [2019-09-10 07:25:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1335 states. [2019-09-10 07:25:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1890 transitions. [2019-09-10 07:25:27,349 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1890 transitions. Word has length 64 [2019-09-10 07:25:27,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:27,349 INFO L475 AbstractCegarLoop]: Abstraction has 1335 states and 1890 transitions. [2019-09-10 07:25:27,349 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:25:27,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1890 transitions. [2019-09-10 07:25:27,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 07:25:27,350 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:27,351 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:25:27,351 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:27,351 INFO L82 PathProgramCache]: Analyzing trace with hash 596121156, now seen corresponding path program 1 times [2019-09-10 07:25:27,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:27,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:27,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:27,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:27,354 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-10 07:25:27,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:25:27,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 07:25:27,456 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:27,456 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:25:27,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:25:27,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-10 07:25:27,457 INFO L87 Difference]: Start difference. First operand 1335 states and 1890 transitions. Second operand 5 states. [2019-09-10 07:25:27,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:27,549 INFO L93 Difference]: Finished difference Result 1897 states and 2705 transitions. [2019-09-10 07:25:27,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:25:27,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-10 07:25:27,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:27,559 INFO L225 Difference]: With dead ends: 1897 [2019-09-10 07:25:27,559 INFO L226 Difference]: Without dead ends: 1897 [2019-09-10 07:25:27,559 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-10 07:25:27,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1897 states. [2019-09-10 07:25:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1667. [2019-09-10 07:25:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1667 states. [2019-09-10 07:25:27,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2366 transitions. [2019-09-10 07:25:27,602 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2366 transitions. Word has length 64 [2019-09-10 07:25:27,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:27,602 INFO L475 AbstractCegarLoop]: Abstraction has 1667 states and 2366 transitions. [2019-09-10 07:25:27,602 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:25:27,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2366 transitions. [2019-09-10 07:25:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-10 07:25:27,603 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:27,604 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:25:27,605 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:27,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:27,605 INFO L82 PathProgramCache]: Analyzing trace with hash 223595262, now seen corresponding path program 1 times [2019-09-10 07:25:27,605 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:27,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:27,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:27,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:27,607 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:27,737 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:25:27,737 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:25:27,739 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 65 with the following transitions: [2019-09-10 07:25:27,740 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [79], [81], [84], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [137], [139], [142], [145], [147], [162], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:25:27,747 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:25:27,747 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:25:27,770 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:25:27,960 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:25:27,961 INFO L272 AbstractInterpreter]: Visited 59 different actions 361 times. Merged at 36 different actions 261 times. Widened at 12 different actions 41 times. Performed 1363 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1363 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 32 fixpoints after 10 different actions. Largest state had 90 variables. [2019-09-10 07:25:27,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:27,961 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:25:27,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:25:27,962 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:25:27,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:27,976 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:25:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:28,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 07:25:28,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:25:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 07:25:28,123 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:25:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 07:25:28,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-09-10 07:25:28,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2019-09-10 07:25:28,168 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:25:28,168 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 07:25:28,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 07:25:28,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-10 07:25:28,169 INFO L87 Difference]: Start difference. First operand 1667 states and 2366 transitions. Second operand 5 states. [2019-09-10 07:25:28,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:28,235 INFO L93 Difference]: Finished difference Result 2121 states and 3033 transitions. [2019-09-10 07:25:28,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 07:25:28,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-10 07:25:28,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:28,248 INFO L225 Difference]: With dead ends: 2121 [2019-09-10 07:25:28,249 INFO L226 Difference]: Without dead ends: 2121 [2019-09-10 07:25:28,249 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-10 07:25:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2019-09-10 07:25:28,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1891. [2019-09-10 07:25:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1891 states. [2019-09-10 07:25:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1891 states to 1891 states and 2694 transitions. [2019-09-10 07:25:28,295 INFO L78 Accepts]: Start accepts. Automaton has 1891 states and 2694 transitions. Word has length 64 [2019-09-10 07:25:28,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:28,296 INFO L475 AbstractCegarLoop]: Abstraction has 1891 states and 2694 transitions. [2019-09-10 07:25:28,296 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 07:25:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1891 states and 2694 transitions. [2019-09-10 07:25:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-10 07:25:28,304 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:28,304 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:25:28,304 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:28,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:28,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1815695605, now seen corresponding path program 1 times [2019-09-10 07:25:28,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:28,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:28,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:28,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:28,307 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:28,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 07:25:28,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:25:28,399 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:25:28,399 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 66 with the following transitions: [2019-09-10 07:25:28,399 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [66], [68], [71], [79], [81], [84], [92], [94], [97], [100], [104], [106], [109], [110], [112], [114], [119], [121], [124], [137], [139], [142], [145], [147], [162], [164], [167], [170], [172], [187], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:25:28,408 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:25:28,409 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:25:28,428 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:25:28,657 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:25:28,658 INFO L272 AbstractInterpreter]: Visited 59 different actions 437 times. Merged at 36 different actions 316 times. Widened at 17 different actions 61 times. Performed 1537 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1537 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 49 fixpoints after 19 different actions. Largest state had 90 variables. [2019-09-10 07:25:28,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:28,658 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:25:28,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:25:28,659 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:25:28,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:28,674 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:25:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:28,753 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-10 07:25:28,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:25:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:28,817 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:25:28,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:25:28,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:28,930 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:25:28,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 11 [2019-09-10 07:25:28,930 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:25:28,932 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 07:25:28,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 07:25:28,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-09-10 07:25:28,933 INFO L87 Difference]: Start difference. First operand 1891 states and 2694 transitions. Second operand 7 states. [2019-09-10 07:25:29,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:29,042 INFO L93 Difference]: Finished difference Result 3759 states and 5224 transitions. [2019-09-10 07:25:29,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 07:25:29,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-10 07:25:29,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:29,062 INFO L225 Difference]: With dead ends: 3759 [2019-09-10 07:25:29,063 INFO L226 Difference]: Without dead ends: 3759 [2019-09-10 07:25:29,063 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2019-09-10 07:25:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3759 states. [2019-09-10 07:25:29,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3759 to 3735. [2019-09-10 07:25:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3735 states. [2019-09-10 07:25:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3735 states to 3735 states and 5198 transitions. [2019-09-10 07:25:29,144 INFO L78 Accepts]: Start accepts. Automaton has 3735 states and 5198 transitions. Word has length 65 [2019-09-10 07:25:29,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:29,144 INFO L475 AbstractCegarLoop]: Abstraction has 3735 states and 5198 transitions. [2019-09-10 07:25:29,144 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 07:25:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3735 states and 5198 transitions. [2019-09-10 07:25:29,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 07:25:29,146 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:29,146 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:25:29,146 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:29,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:29,147 INFO L82 PathProgramCache]: Analyzing trace with hash 2112957636, now seen corresponding path program 1 times [2019-09-10 07:25:29,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:29,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:29,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:29,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:29,149 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:29,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:25:29,377 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:25:29,378 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 07:25:29,378 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [66], [68], [71], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [130], [133], [139], [142], [145], [147], [162], [164], [167], [170], [172], [187], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:25:29,381 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:25:29,381 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:25:29,401 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:25:29,605 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:25:29,606 INFO L272 AbstractInterpreter]: Visited 59 different actions 395 times. Merged at 36 different actions 289 times. Widened at 13 different actions 43 times. Performed 1399 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1399 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 34 fixpoints after 16 different actions. Largest state had 90 variables. [2019-09-10 07:25:29,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:29,606 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:25:29,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:25:29,607 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:25:29,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:29,627 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:25:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:29,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 07:25:29,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:25:29,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:25:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:30,197 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:25:30,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:25:30,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:30,552 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:25:30,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2019-09-10 07:25:30,553 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:25:30,553 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 07:25:30,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 07:25:30,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2019-09-10 07:25:30,554 INFO L87 Difference]: Start difference. First operand 3735 states and 5198 transitions. Second operand 17 states. [2019-09-10 07:25:31,466 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2019-09-10 07:25:33,046 WARN L188 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2019-09-10 07:25:38,325 WARN L188 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-09-10 07:25:41,477 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2019-09-10 07:25:46,150 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2019-09-10 07:25:51,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:51,911 INFO L93 Difference]: Finished difference Result 56322 states and 75185 transitions. [2019-09-10 07:25:51,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2019-09-10 07:25:51,912 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2019-09-10 07:25:51,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:52,075 INFO L225 Difference]: With dead ends: 56322 [2019-09-10 07:25:52,075 INFO L226 Difference]: Without dead ends: 56322 [2019-09-10 07:25:52,090 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22975 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=7296, Invalid=48164, Unknown=0, NotChecked=0, Total=55460 [2019-09-10 07:25:52,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56322 states. [2019-09-10 07:25:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56322 to 17461. [2019-09-10 07:25:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17461 states. [2019-09-10 07:25:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17461 states to 17461 states and 23750 transitions. [2019-09-10 07:25:52,942 INFO L78 Accepts]: Start accepts. Automaton has 17461 states and 23750 transitions. Word has length 66 [2019-09-10 07:25:52,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:52,943 INFO L475 AbstractCegarLoop]: Abstraction has 17461 states and 23750 transitions. [2019-09-10 07:25:52,943 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 07:25:52,943 INFO L276 IsEmpty]: Start isEmpty. Operand 17461 states and 23750 transitions. [2019-09-10 07:25:52,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-09-10 07:25:52,945 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:52,945 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:25:52,945 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:52,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:52,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1295369161, now seen corresponding path program 1 times [2019-09-10 07:25:52,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:52,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:52,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:52,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:52,948 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:53,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:25:53,146 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:25:53,147 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2019-09-10 07:25:53,148 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [79], [81], [84], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [137], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:25:53,155 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:25:53,155 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:25:53,172 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:25:53,337 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:25:53,337 INFO L272 AbstractInterpreter]: Visited 61 different actions 420 times. Merged at 38 different actions 317 times. Widened at 13 different actions 47 times. Performed 1578 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1578 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 36 fixpoints after 12 different actions. Largest state had 90 variables. [2019-09-10 07:25:53,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:53,338 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:25:53,338 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:25:53,338 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:25:53,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:53,352 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:25:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:25:53,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 07:25:53,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:25:53,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:25:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:53,747 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:25:53,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:25:53,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:25:53,967 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:25:53,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 07:25:53,969 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:25:53,969 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-10 07:25:53,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-10 07:25:53,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2019-09-10 07:25:53,971 INFO L87 Difference]: Start difference. First operand 17461 states and 23750 transitions. Second operand 17 states. [2019-09-10 07:25:57,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:25:57,161 INFO L93 Difference]: Finished difference Result 95738 states and 127352 transitions. [2019-09-10 07:25:57,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-10 07:25:57,162 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 66 [2019-09-10 07:25:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:25:57,344 INFO L225 Difference]: With dead ends: 95738 [2019-09-10 07:25:57,344 INFO L226 Difference]: Without dead ends: 95738 [2019-09-10 07:25:57,346 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=874, Invalid=2432, Unknown=0, NotChecked=0, Total=3306 [2019-09-10 07:25:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95738 states. [2019-09-10 07:25:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95738 to 43474. [2019-09-10 07:25:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43474 states. [2019-09-10 07:25:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43474 states to 43474 states and 58839 transitions. [2019-09-10 07:25:59,563 INFO L78 Accepts]: Start accepts. Automaton has 43474 states and 58839 transitions. Word has length 66 [2019-09-10 07:25:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:25:59,563 INFO L475 AbstractCegarLoop]: Abstraction has 43474 states and 58839 transitions. [2019-09-10 07:25:59,564 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-10 07:25:59,564 INFO L276 IsEmpty]: Start isEmpty. Operand 43474 states and 58839 transitions. [2019-09-10 07:25:59,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 07:25:59,567 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:25:59,567 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:25:59,567 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:25:59,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:25:59,568 INFO L82 PathProgramCache]: Analyzing trace with hash -401806685, now seen corresponding path program 1 times [2019-09-10 07:25:59,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:25:59,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:59,569 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:25:59,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:25:59,569 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:25:59,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:26:00,437 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 17 [2019-09-10 07:26:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:26:00,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:26:00,599 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:26:00,599 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 68 with the following transitions: [2019-09-10 07:26:00,599 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [130], [133], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:26:00,602 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:26:00,602 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:26:00,613 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:26:00,740 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:26:00,740 INFO L272 AbstractInterpreter]: Visited 62 different actions 348 times. Merged at 39 different actions 252 times. Widened at 8 different actions 23 times. Performed 1230 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1230 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 31 fixpoints after 13 different actions. Largest state had 90 variables. [2019-09-10 07:26:00,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:26:00,741 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:26:00,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:26:00,741 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:26:00,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:26:00,761 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:26:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:26:00,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 38 conjunts are in the unsatisfiable core [2019-09-10 07:26:00,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:26:01,163 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:26:01,534 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:26:01,786 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2019-09-10 07:26:02,231 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:26:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:26:02,588 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:26:03,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:26:03,397 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:26:03,400 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:26:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:26:03,621 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:26:03,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 47 [2019-09-10 07:26:03,621 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:26:03,622 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-10 07:26:03,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-10 07:26:03,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1983, Unknown=0, NotChecked=0, Total=2162 [2019-09-10 07:26:03,623 INFO L87 Difference]: Start difference. First operand 43474 states and 58839 transitions. Second operand 36 states. [2019-09-10 07:26:03,874 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 25 [2019-09-10 07:26:05,092 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2019-09-10 07:26:05,324 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 46 [2019-09-10 07:26:05,664 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 53 [2019-09-10 07:26:06,003 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 56 [2019-09-10 07:26:06,272 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 53 [2019-09-10 07:26:06,586 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 56 [2019-09-10 07:26:07,010 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2019-09-10 07:26:07,451 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 67 [2019-09-10 07:26:07,863 WARN L188 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2019-09-10 07:26:08,175 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2019-09-10 07:26:08,514 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2019-09-10 07:26:09,016 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-10 07:26:09,653 WARN L188 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2019-09-10 07:26:10,027 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-10 07:26:10,237 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2019-09-10 07:26:10,457 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2019-09-10 07:26:10,746 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2019-09-10 07:26:11,061 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-10 07:26:11,461 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-10 07:26:11,693 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2019-09-10 07:26:11,969 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2019-09-10 07:26:12,345 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-10 07:26:12,822 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-10 07:26:13,176 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 57 [2019-09-10 07:26:13,646 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 67 [2019-09-10 07:26:13,870 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2019-09-10 07:26:14,147 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 64 [2019-09-10 07:26:14,479 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2019-09-10 07:26:14,766 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2019-09-10 07:26:15,144 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 67 [2019-09-10 07:26:15,567 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2019-09-10 07:26:15,884 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2019-09-10 07:26:16,223 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2019-09-10 07:26:16,647 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 81 [2019-09-10 07:26:17,125 WARN L188 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 69 [2019-09-10 07:26:17,671 WARN L188 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 67 [2019-09-10 07:26:18,034 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2019-09-10 07:26:18,435 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2019-09-10 07:26:18,608 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2019-09-10 07:26:18,882 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 41 [2019-09-10 07:26:19,298 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2019-09-10 07:26:19,600 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2019-09-10 07:26:20,067 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 69 [2019-09-10 07:26:20,347 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2019-09-10 07:26:20,657 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 63 [2019-09-10 07:26:21,249 WARN L188 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 89 [2019-09-10 07:26:21,612 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2019-09-10 07:26:21,883 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 39 [2019-09-10 07:26:22,076 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2019-09-10 07:26:22,388 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 68 [2019-09-10 07:26:22,602 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-10 07:26:23,127 WARN L188 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 62 [2019-09-10 07:26:23,364 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-09-10 07:26:23,696 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2019-09-10 07:26:24,039 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2019-09-10 07:26:24,387 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2019-09-10 07:26:24,621 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2019-09-10 07:26:24,980 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 62 [2019-09-10 07:26:25,236 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 59 [2019-09-10 07:26:25,632 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2019-09-10 07:26:25,953 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2019-09-10 07:26:26,312 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2019-09-10 07:26:26,766 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 62 [2019-09-10 07:26:26,958 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 41 [2019-09-10 07:26:27,196 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2019-09-10 07:26:27,637 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 76 [2019-09-10 07:26:28,019 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2019-09-10 07:26:28,335 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2019-09-10 07:26:28,681 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2019-09-10 07:26:29,032 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2019-09-10 07:26:29,464 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 93 [2019-09-10 07:26:29,682 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 48 [2019-09-10 07:26:30,241 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2019-09-10 07:26:30,580 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 58 [2019-09-10 07:26:31,092 WARN L188 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 80 [2019-09-10 07:26:31,341 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2019-09-10 07:26:31,790 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2019-09-10 07:26:32,138 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2019-09-10 07:26:32,359 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-10 07:26:32,845 WARN L188 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 97 [2019-09-10 07:26:33,111 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2019-09-10 07:26:33,437 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-10 07:26:33,600 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2019-09-10 07:26:34,013 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2019-09-10 07:26:34,287 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-09-10 07:26:34,511 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-09-10 07:26:34,746 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2019-09-10 07:26:35,126 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 37 [2019-09-10 07:26:35,638 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 47 [2019-09-10 07:26:36,011 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2019-09-10 07:26:36,489 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2019-09-10 07:26:36,818 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2019-09-10 07:26:37,328 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 80 [2019-09-10 07:26:37,533 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2019-09-10 07:26:37,707 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 38 [2019-09-10 07:26:37,969 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2019-09-10 07:26:38,355 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2019-09-10 07:26:38,613 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-10 07:26:39,026 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 75 [2019-09-10 07:26:39,491 WARN L188 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-10 07:26:39,682 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 07:26:40,302 WARN L188 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 101 [2019-09-10 07:26:40,687 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 63 [2019-09-10 07:26:40,949 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 50 [2019-09-10 07:26:41,301 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2019-09-10 07:26:41,501 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-10 07:26:42,055 WARN L188 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 97 [2019-09-10 07:26:42,242 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-10 07:26:42,507 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2019-09-10 07:26:42,736 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2019-09-10 07:26:42,938 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2019-09-10 07:26:43,274 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:26:43,525 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2019-09-10 07:26:43,802 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2019-09-10 07:26:44,044 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-10 07:26:44,270 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2019-09-10 07:26:44,556 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 65 [2019-09-10 07:26:45,079 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 63 [2019-09-10 07:26:45,402 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 07:26:45,718 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 69 [2019-09-10 07:26:46,035 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2019-09-10 07:26:46,293 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2019-09-10 07:26:46,800 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2019-09-10 07:26:47,015 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2019-09-10 07:26:47,295 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2019-09-10 07:26:47,480 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-10 07:26:47,887 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2019-09-10 07:26:48,057 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2019-09-10 07:26:48,356 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2019-09-10 07:26:48,784 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2019-09-10 07:26:49,211 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:26:49,549 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2019-09-10 07:26:49,781 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 34 [2019-09-10 07:26:49,974 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:26:50,348 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 63 [2019-09-10 07:26:50,614 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2019-09-10 07:26:50,793 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-10 07:26:51,103 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2019-09-10 07:26:51,307 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2019-09-10 07:26:51,516 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2019-09-10 07:26:51,922 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 68 [2019-09-10 07:26:52,229 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 53 [2019-09-10 07:26:52,535 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 65 [2019-09-10 07:26:52,903 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2019-09-10 07:26:53,133 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2019-09-10 07:26:53,476 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2019-09-10 07:26:53,654 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:26:53,909 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 57 [2019-09-10 07:26:54,274 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2019-09-10 07:26:54,547 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2019-09-10 07:26:54,980 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2019-09-10 07:26:55,310 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2019-09-10 07:26:55,549 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 53 [2019-09-10 07:26:56,452 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2019-09-10 07:26:56,804 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-10 07:26:57,344 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2019-09-10 07:26:57,690 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-09-10 07:26:58,016 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2019-09-10 07:26:58,413 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2019-09-10 07:26:58,985 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-09-10 07:26:59,397 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 07:27:01,634 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 07:27:02,099 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2019-09-10 07:27:02,416 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2019-09-10 07:27:02,732 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-09-10 07:27:03,351 WARN L188 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2019-09-10 07:27:03,726 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:27:04,270 WARN L188 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:27:04,854 WARN L188 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2019-09-10 07:27:05,102 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-10 07:27:05,450 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2019-09-10 07:27:05,759 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 07:27:06,120 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2019-09-10 07:27:06,639 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 73 [2019-09-10 07:27:07,041 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2019-09-10 07:27:07,392 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2019-09-10 07:27:07,836 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2019-09-10 07:27:08,340 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2019-09-10 07:27:08,689 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-10 07:27:09,134 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-09-10 07:27:09,584 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:27:09,952 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:27:10,253 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-10 07:27:10,744 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2019-09-10 07:27:10,939 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:27:11,177 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 07:27:11,684 WARN L188 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2019-09-10 07:27:11,972 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2019-09-10 07:27:12,476 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-09-10 07:27:12,786 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 57 [2019-09-10 07:27:13,097 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2019-09-10 07:27:13,443 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2019-09-10 07:27:13,794 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2019-09-10 07:27:14,256 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2019-09-10 07:27:14,786 WARN L188 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2019-09-10 07:27:15,123 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-10 07:27:15,466 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-10 07:27:16,065 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:27:16,434 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2019-09-10 07:27:16,850 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 70 [2019-09-10 07:27:17,188 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 07:27:17,545 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:27:17,852 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2019-09-10 07:27:18,194 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2019-09-10 07:27:18,630 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2019-09-10 07:27:18,835 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 07:27:19,144 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-10 07:27:19,333 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:27:19,664 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-10 07:27:20,026 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-09-10 07:27:20,366 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2019-09-10 07:27:20,885 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2019-09-10 07:27:21,068 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-10 07:27:21,441 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2019-09-10 07:27:21,783 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2019-09-10 07:27:22,291 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2019-09-10 07:27:22,688 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2019-09-10 07:27:23,191 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2019-09-10 07:27:23,687 WARN L188 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 82 [2019-09-10 07:27:24,018 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2019-09-10 07:27:24,281 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 07:27:24,728 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2019-09-10 07:27:25,280 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 07:27:25,914 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-09-10 07:27:26,434 WARN L188 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 75 [2019-09-10 07:27:26,703 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-10 07:27:27,002 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2019-09-10 07:27:27,312 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2019-09-10 07:27:27,566 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-09-10 07:27:27,903 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2019-09-10 07:27:28,200 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2019-09-10 07:27:28,584 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-09-10 07:27:29,030 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2019-09-10 07:27:29,240 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-10 07:27:29,686 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-10 07:27:29,949 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2019-09-10 07:27:30,280 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 71 [2019-09-10 07:27:30,530 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-10 07:27:30,700 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2019-09-10 07:27:31,133 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 71 [2019-09-10 07:27:31,639 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2019-09-10 07:27:31,930 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 07:27:32,308 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2019-09-10 07:27:32,582 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2019-09-10 07:27:32,953 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-09-10 07:27:33,339 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 67 [2019-09-10 07:27:33,666 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2019-09-10 07:27:34,205 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2019-09-10 07:27:34,465 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 52 [2019-09-10 07:27:36,989 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2019-09-10 07:27:37,451 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 67 [2019-09-10 07:27:37,806 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2019-09-10 07:27:38,382 WARN L188 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 73 [2019-09-10 07:27:38,978 WARN L188 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2019-09-10 07:27:39,248 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 07:27:39,476 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-10 07:27:39,946 WARN L188 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2019-09-10 07:27:40,449 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2019-09-10 07:27:40,847 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2019-09-10 07:27:41,510 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2019-09-10 07:27:41,751 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 07:27:42,036 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 07:27:42,370 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2019-09-10 07:27:42,633 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2019-09-10 07:27:42,975 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2019-09-10 07:27:43,199 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2019-09-10 07:27:43,600 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:27:43,935 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2019-09-10 07:27:44,356 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-09-10 07:27:44,828 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2019-09-10 07:27:45,039 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-10 07:27:45,389 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-10 07:27:45,695 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-09-10 07:27:45,952 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 48 [2019-09-10 07:27:47,027 WARN L188 SmtUtils]: Spent 959.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2019-09-10 07:27:47,510 WARN L188 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2019-09-10 07:27:47,679 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-10 07:27:48,235 WARN L188 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2019-09-10 07:27:48,644 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2019-09-10 07:27:49,335 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 73 [2019-09-10 07:27:49,833 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2019-09-10 07:27:50,136 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 66 [2019-09-10 07:27:50,606 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 72 [2019-09-10 07:27:50,868 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2019-09-10 07:27:51,200 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 63 [2019-09-10 07:27:51,561 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 67 [2019-09-10 07:27:51,798 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2019-09-10 07:27:52,086 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2019-09-10 07:27:52,562 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 87 [2019-09-10 07:27:53,227 WARN L188 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 75 [2019-09-10 07:27:53,831 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 73 [2019-09-10 07:27:54,396 WARN L188 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 83 [2019-09-10 07:27:54,616 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 07:27:54,821 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-10 07:27:55,030 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 07:27:55,385 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2019-09-10 07:27:55,828 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2019-09-10 07:27:56,576 WARN L188 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2019-09-10 07:27:57,125 WARN L188 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2019-09-10 07:27:57,342 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 07:27:57,584 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2019-09-10 07:27:57,912 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:27:58,200 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:27:58,579 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2019-09-10 07:27:58,797 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-10 07:27:59,080 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-09-10 07:27:59,261 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:27:59,515 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 07:27:59,834 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2019-09-10 07:28:00,051 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-10 07:28:00,504 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2019-09-10 07:28:00,841 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2019-09-10 07:28:01,158 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2019-09-10 07:28:01,633 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 74 [2019-09-10 07:28:02,120 WARN L188 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2019-09-10 07:28:02,301 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:28:02,659 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 07:28:03,001 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 07:28:03,252 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2019-09-10 07:28:03,452 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2019-09-10 07:28:03,837 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:28:04,003 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:28:04,339 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2019-09-10 07:28:05,040 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 73 [2019-09-10 07:28:05,389 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 61 [2019-09-10 07:28:05,923 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 63 [2019-09-10 07:28:06,154 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2019-09-10 07:28:06,859 WARN L188 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 75 [2019-09-10 07:28:07,084 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2019-09-10 07:28:07,397 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:28:07,726 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 07:28:08,092 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2019-09-10 07:28:08,805 WARN L188 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 96 [2019-09-10 07:28:09,021 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2019-09-10 07:28:09,265 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2019-09-10 07:28:09,573 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:28:10,021 WARN L188 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 77 [2019-09-10 07:28:10,485 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 73 [2019-09-10 07:28:10,889 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2019-09-10 07:28:11,147 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-10 07:28:11,418 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2019-09-10 07:28:11,604 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-10 07:28:11,760 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2019-09-10 07:28:11,957 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-10 07:28:12,364 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 87 [2019-09-10 07:28:12,935 WARN L188 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 76 [2019-09-10 07:28:13,418 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 74 [2019-09-10 07:28:13,896 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2019-09-10 07:28:14,074 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-10 07:28:14,225 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-09-10 07:28:14,600 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2019-09-10 07:28:14,954 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-10 07:28:16,140 WARN L188 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2019-09-10 07:28:16,612 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-10 07:28:16,774 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:28:17,009 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 07:28:17,311 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2019-09-10 07:28:17,940 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2019-09-10 07:28:18,317 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:28:18,640 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2019-09-10 07:28:18,892 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 54 [2019-09-10 07:28:19,347 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 73 [2019-09-10 07:28:19,604 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-10 07:28:20,329 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 76 [2019-09-10 07:28:20,495 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-09-10 07:28:20,733 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 07:28:20,977 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 07:28:21,279 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-10 07:28:21,897 WARN L188 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 95 [2019-09-10 07:28:22,068 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-09-10 07:28:22,300 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 07:28:22,693 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2019-09-10 07:28:23,189 WARN L188 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 82 [2019-09-10 07:28:23,742 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 60 [2019-09-10 07:28:24,210 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 77 [2019-09-10 07:28:24,679 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2019-09-10 07:28:25,028 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 07:28:25,274 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 07:28:25,493 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 32 [2019-09-10 07:28:25,937 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2019-09-10 07:28:26,300 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 60 [2019-09-10 07:28:26,732 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 77 [2019-09-10 07:28:27,314 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 45 [2019-09-10 07:28:27,722 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2019-09-10 07:28:28,098 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2019-09-10 07:28:28,483 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2019-09-10 07:28:28,690 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2019-09-10 07:28:28,922 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 35 [2019-09-10 07:28:29,239 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2019-09-10 07:28:29,928 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 07:28:30,307 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 41 [2019-09-10 07:28:30,548 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-10 07:28:30,771 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:28:31,122 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2019-09-10 07:28:31,357 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2019-09-10 07:28:31,917 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2019-09-10 07:28:32,566 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2019-09-10 07:28:32,903 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2019-09-10 07:28:33,246 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2019-09-10 07:28:33,606 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2019-09-10 07:28:34,041 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2019-09-10 07:28:34,500 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 64 [2019-09-10 07:28:34,753 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2019-09-10 07:28:35,078 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 07:28:35,331 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2019-09-10 07:28:35,658 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 54 [2019-09-10 07:28:35,963 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2019-09-10 07:28:36,478 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2019-09-10 07:28:36,952 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2019-09-10 07:28:37,231 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2019-09-10 07:28:37,563 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 68 [2019-09-10 07:28:37,827 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 44 [2019-09-10 07:28:38,147 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-10 07:28:38,334 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-10 07:28:38,796 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2019-09-10 07:28:39,123 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2019-09-10 07:28:39,530 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2019-09-10 07:28:39,993 WARN L188 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 80 [2019-09-10 07:28:40,309 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 66 [2019-09-10 07:28:40,645 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 57 [2019-09-10 07:28:41,056 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2019-09-10 07:28:41,534 WARN L188 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2019-09-10 07:28:41,894 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2019-09-10 07:28:42,156 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 07:28:42,627 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2019-09-10 07:28:42,952 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2019-09-10 07:28:43,273 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2019-09-10 07:28:43,781 WARN L188 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2019-09-10 07:28:44,272 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2019-09-10 07:28:44,609 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2019-09-10 07:28:44,939 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 57 [2019-09-10 07:28:45,285 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 69 [2019-09-10 07:28:45,692 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2019-09-10 07:28:45,870 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2019-09-10 07:28:46,476 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-10 07:28:46,683 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-10 07:28:47,146 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2019-09-10 07:28:47,586 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2019-09-10 07:28:48,183 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 73 [2019-09-10 07:28:48,676 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 71 [2019-09-10 07:28:49,154 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2019-09-10 07:28:49,613 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2019-09-10 07:28:50,233 WARN L188 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2019-09-10 07:28:50,717 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2019-09-10 07:28:51,166 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2019-09-10 07:28:51,711 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-10 07:28:52,126 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-10 07:28:52,751 WARN L188 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 73 [2019-09-10 07:28:53,380 WARN L188 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 92 [2019-09-10 07:28:53,728 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 58 [2019-09-10 07:28:54,173 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-10 07:28:54,835 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-09-10 07:28:55,135 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-10 07:28:55,333 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-10 07:28:55,545 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 07:28:56,146 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2019-09-10 07:28:56,425 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-10 07:28:56,714 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-09-10 07:28:57,007 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2019-09-10 07:28:57,216 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2019-09-10 07:28:57,428 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2019-09-10 07:28:57,719 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-09-10 07:28:58,033 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 54 [2019-09-10 07:28:58,303 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2019-09-10 07:28:58,570 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:28:58,859 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-10 07:28:59,117 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:28:59,347 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-10 07:28:59,553 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:28:59,807 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:29:00,036 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-10 07:29:00,522 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2019-09-10 07:29:00,798 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 07:29:01,383 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2019-09-10 07:29:01,692 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-10 07:29:01,943 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-10 07:29:02,174 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-10 07:29:02,572 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:29:02,796 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-10 07:29:03,119 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-09-10 07:29:03,531 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 07:29:03,885 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:29:04,183 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 07:29:04,539 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-10 07:29:04,790 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:29:05,131 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:29:05,334 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-09-10 07:29:05,636 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2019-09-10 07:29:06,048 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 68 [2019-09-10 07:29:06,583 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-10 07:29:06,854 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:29:07,234 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:29:07,500 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-10 07:29:07,829 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 07:29:08,072 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-10 07:29:08,435 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:29:08,654 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-10 07:29:08,960 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 56 [2019-09-10 07:29:09,268 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 57 [2019-09-10 07:29:09,545 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 07:29:09,962 WARN L188 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 69 [2019-09-10 07:29:10,268 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-10 07:29:10,523 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2019-09-10 07:29:10,881 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:29:11,142 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 57 [2019-09-10 07:29:11,443 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2019-09-10 07:29:11,787 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2019-09-10 07:29:12,137 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-10 07:29:12,380 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:29:12,625 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-09-10 07:29:12,989 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2019-09-10 07:29:13,228 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2019-09-10 07:29:13,468 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2019-09-10 07:29:13,803 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2019-09-10 07:29:14,157 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-10 07:29:14,435 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-10 07:29:15,036 WARN L188 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2019-09-10 07:29:15,475 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2019-09-10 07:29:15,760 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-10 07:29:16,060 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2019-09-10 07:29:16,327 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-10 07:29:16,582 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 07:29:16,951 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-10 07:29:17,258 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 60 [2019-09-10 07:29:17,513 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-10 07:29:17,717 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-10 07:29:17,977 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2019-09-10 07:29:18,221 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2019-09-10 07:29:18,442 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2019-09-10 07:29:18,800 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-10 07:29:19,039 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 07:29:19,485 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 07:29:19,863 WARN L188 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:29:20,105 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:29:20,595 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2019-09-10 07:29:21,070 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 69 [2019-09-10 07:29:21,504 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2019-09-10 07:29:21,804 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2019-09-10 07:29:22,115 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2019-09-10 07:29:22,368 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 54 [2019-09-10 07:29:22,628 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 07:29:23,037 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2019-09-10 07:29:23,409 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2019-09-10 07:29:23,674 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2019-09-10 07:29:23,958 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-10 07:29:24,191 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2019-09-10 07:29:24,353 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-10 07:29:24,598 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2019-09-10 07:29:25,011 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 07:29:25,386 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2019-09-10 07:29:25,571 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:29:25,759 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 07:29:26,207 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 07:29:26,612 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-10 07:29:26,972 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-10 07:29:27,192 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2019-09-10 07:29:27,373 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:29:27,602 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 07:29:28,358 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 71 [2019-09-10 07:29:28,827 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:29:29,254 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 71 [2019-09-10 07:29:29,655 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2019-09-10 07:29:29,946 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-10 07:29:30,184 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2019-09-10 07:29:30,615 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 07:29:31,069 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-10 07:29:31,425 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-10 07:29:31,593 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:29:31,760 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-10 07:29:31,952 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 07:29:32,287 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 07:29:32,754 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-10 07:29:32,962 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2019-09-10 07:29:33,133 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:29:33,401 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 07:29:34,023 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 72 [2019-09-10 07:29:34,485 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2019-09-10 07:29:34,677 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 07:29:34,957 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 07:29:35,250 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 07:29:35,601 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-10 07:29:35,790 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-10 07:29:35,984 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 07:29:36,251 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 07:29:36,582 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-10 07:29:36,881 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 07:29:37,086 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2019-09-10 07:29:37,578 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:29:37,779 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-10 07:29:38,005 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2019-09-10 07:29:38,335 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-10 07:29:38,564 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2019-09-10 07:29:38,912 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-09-10 07:29:40,152 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 07:29:40,797 WARN L188 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 07:29:41,115 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:29:41,492 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-10 07:29:41,791 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 07:29:42,074 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-09-10 07:29:42,305 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-10 07:29:42,539 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-10 07:29:42,845 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:29:43,093 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:29:43,294 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:29:43,529 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:29:43,803 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:29:44,060 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:29:44,403 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:29:44,641 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 07:29:45,043 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:29:45,289 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-09-10 07:29:45,529 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:29:45,865 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:29:46,127 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:29:46,513 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:29:46,716 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:29:47,048 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:29:47,259 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:29:47,535 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-10 07:29:47,939 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:29:48,170 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-10 07:29:48,413 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-10 07:29:48,617 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 07:29:48,856 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 07:29:49,174 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:29:49,423 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2019-09-10 07:29:49,702 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-09-10 07:29:50,079 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 07:29:50,346 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 07:29:50,752 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:29:51,009 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-09-10 07:29:51,274 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-10 07:29:51,481 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 07:29:51,848 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-10 07:29:52,203 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 07:29:52,411 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 07:29:52,720 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2019-09-10 07:29:52,977 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 07:29:53,429 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-10 07:29:53,846 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 07:29:54,085 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 07:29:54,757 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:29:55,137 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-10 07:29:55,473 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 07:29:55,705 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 07:29:56,222 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:29:56,960 WARN L188 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-10 07:29:57,355 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 07:29:57,602 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2019-09-10 07:29:58,016 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:29:58,509 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:29:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:29:58,590 INFO L93 Difference]: Finished difference Result 284048 states and 374702 transitions. [2019-09-10 07:29:58,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 763 states. [2019-09-10 07:29:58,590 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 67 [2019-09-10 07:29:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:29:59,006 INFO L225 Difference]: With dead ends: 284048 [2019-09-10 07:29:59,007 INFO L226 Difference]: Without dead ends: 284048 [2019-09-10 07:29:59,062 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 102 SyntacticMatches, 6 SemanticMatches, 792 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293632 ImplicationChecksByTransitivity, 219.1s TimeCoverageRelationStatistics Valid=60554, Invalid=569088, Unknown=0, NotChecked=0, Total=629642 [2019-09-10 07:29:59,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284048 states. [2019-09-10 07:30:00,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284048 to 44972. [2019-09-10 07:30:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44972 states. [2019-09-10 07:30:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44972 states to 44972 states and 60978 transitions. [2019-09-10 07:30:00,728 INFO L78 Accepts]: Start accepts. Automaton has 44972 states and 60978 transitions. Word has length 67 [2019-09-10 07:30:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:30:00,728 INFO L475 AbstractCegarLoop]: Abstraction has 44972 states and 60978 transitions. [2019-09-10 07:30:00,728 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-10 07:30:00,728 INFO L276 IsEmpty]: Start isEmpty. Operand 44972 states and 60978 transitions. [2019-09-10 07:30:00,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 07:30:00,732 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:30:00,732 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:30:00,732 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:30:00,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:30:00,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1602445283, now seen corresponding path program 1 times [2019-09-10 07:30:00,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:30:00,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:00,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:30:00,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:00,734 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:30:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:30:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:30:02,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:30:02,045 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:30:02,045 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 68 with the following transitions: [2019-09-10 07:30:02,046 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:30:02,048 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:30:02,050 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:30:02,065 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:30:02,239 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:30:02,240 INFO L272 AbstractInterpreter]: Visited 62 different actions 403 times. Merged at 39 different actions 302 times. Widened at 10 different actions 43 times. Performed 1441 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1441 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 35 fixpoints after 12 different actions. Largest state had 90 variables. [2019-09-10 07:30:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:30:02,241 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:30:02,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:30:02,241 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:30:02,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:30:02,270 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:30:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:30:02,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 43 conjunts are in the unsatisfiable core [2019-09-10 07:30:02,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:30:03,117 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:03,460 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:30:03,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-10 07:30:03,690 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-09-10 07:30:03,943 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2019-09-10 07:30:04,251 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 07:30:04,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-10 07:30:04,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:30:05,033 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:30:06,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:06,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:30:06,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:30:06,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 57 [2019-09-10 07:30:06,758 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:30:06,759 INFO L454 AbstractCegarLoop]: Interpolant automaton has 38 states [2019-09-10 07:30:06,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2019-09-10 07:30:06,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=2897, Unknown=0, NotChecked=0, Total=3192 [2019-09-10 07:30:06,761 INFO L87 Difference]: Start difference. First operand 44972 states and 60978 transitions. Second operand 38 states. [2019-09-10 07:30:07,993 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 36 [2019-09-10 07:30:08,217 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 38 [2019-09-10 07:30:08,444 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2019-09-10 07:30:08,703 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 45 [2019-09-10 07:30:09,057 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 57 [2019-09-10 07:30:09,555 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2019-09-10 07:30:09,725 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 40 [2019-09-10 07:30:10,235 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 79 [2019-09-10 07:30:10,604 WARN L188 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2019-09-10 07:30:11,922 WARN L188 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 90 [2019-09-10 07:30:12,310 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 70 [2019-09-10 07:30:13,073 WARN L188 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2019-09-10 07:30:13,502 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 70 [2019-09-10 07:30:13,973 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 86 [2019-09-10 07:30:14,398 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 51 [2019-09-10 07:30:14,718 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-10 07:30:14,969 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 46 [2019-09-10 07:30:15,995 WARN L188 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 65 [2019-09-10 07:30:16,802 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2019-09-10 07:30:17,132 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-10 07:30:17,708 WARN L188 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 88 [2019-09-10 07:30:17,904 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 44 [2019-09-10 07:30:18,741 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2019-09-10 07:30:19,049 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2019-09-10 07:30:19,751 WARN L188 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 90 [2019-09-10 07:30:19,953 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2019-09-10 07:30:20,529 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2019-09-10 07:30:22,000 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2019-09-10 07:30:22,409 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-10 07:30:23,036 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-09-10 07:30:23,311 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 40 [2019-09-10 07:30:23,851 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-10 07:30:24,954 WARN L188 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 92 [2019-09-10 07:30:27,703 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 90 [2019-09-10 07:30:28,594 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2019-09-10 07:30:29,198 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 46 [2019-09-10 07:30:30,127 WARN L188 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 100 [2019-09-10 07:30:30,521 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2019-09-10 07:30:31,369 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2019-09-10 07:30:31,611 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2019-09-10 07:30:32,155 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-10 07:30:32,381 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 41 [2019-09-10 07:30:33,205 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 72 [2019-09-10 07:30:34,045 WARN L188 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2019-09-10 07:30:34,349 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 43 [2019-09-10 07:30:35,790 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 07:30:36,583 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 55 [2019-09-10 07:30:36,876 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 65 [2019-09-10 07:30:37,194 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2019-09-10 07:30:37,491 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2019-09-10 07:30:37,784 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-10 07:30:37,993 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2019-09-10 07:30:38,177 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2019-09-10 07:30:38,685 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-10 07:30:39,069 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 42 [2019-09-10 07:30:39,445 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2019-09-10 07:30:39,770 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2019-09-10 07:30:40,382 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2019-09-10 07:30:40,633 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-10 07:30:41,817 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 45 [2019-09-10 07:30:42,068 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 56 [2019-09-10 07:30:42,470 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 80 [2019-09-10 07:30:42,918 WARN L188 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 82 [2019-09-10 07:30:43,275 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-10 07:30:43,632 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2019-09-10 07:30:44,104 WARN L188 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2019-09-10 07:30:44,426 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-09-10 07:30:44,881 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2019-09-10 07:30:45,252 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2019-09-10 07:30:45,778 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2019-09-10 07:30:46,128 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2019-09-10 07:30:46,643 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 88 [2019-09-10 07:30:46,870 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 63 [2019-09-10 07:30:47,401 WARN L188 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 93 [2019-09-10 07:30:47,636 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-10 07:30:48,593 WARN L188 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2019-09-10 07:30:49,203 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-10 07:30:49,984 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2019-09-10 07:30:50,462 WARN L188 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 84 [2019-09-10 07:30:50,820 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 63 [2019-09-10 07:30:50,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:30:50,912 INFO L93 Difference]: Finished difference Result 111506 states and 148964 transitions. [2019-09-10 07:30:50,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2019-09-10 07:30:50,913 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 67 [2019-09-10 07:30:50,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:30:51,046 INFO L225 Difference]: With dead ends: 111506 [2019-09-10 07:30:51,046 INFO L226 Difference]: Without dead ends: 111506 [2019-09-10 07:30:51,048 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14731 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=6819, Invalid=36649, Unknown=4, NotChecked=0, Total=43472 [2019-09-10 07:30:51,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111506 states. [2019-09-10 07:30:51,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111506 to 48784. [2019-09-10 07:30:51,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48784 states. [2019-09-10 07:30:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48784 states to 48784 states and 66461 transitions. [2019-09-10 07:30:51,790 INFO L78 Accepts]: Start accepts. Automaton has 48784 states and 66461 transitions. Word has length 67 [2019-09-10 07:30:51,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:30:51,790 INFO L475 AbstractCegarLoop]: Abstraction has 48784 states and 66461 transitions. [2019-09-10 07:30:51,791 INFO L476 AbstractCegarLoop]: Interpolant automaton has 38 states. [2019-09-10 07:30:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand 48784 states and 66461 transitions. [2019-09-10 07:30:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-09-10 07:30:51,794 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:30:51,794 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:30:51,794 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:30:51,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:30:51,795 INFO L82 PathProgramCache]: Analyzing trace with hash 871871289, now seen corresponding path program 1 times [2019-09-10 07:30:51,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:30:51,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:51,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:30:51,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:51,796 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:30:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:30:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 07:30:51,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:30:51,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:30:51,826 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:30:51,827 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:30:51,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:30:51,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:30:51,827 INFO L87 Difference]: Start difference. First operand 48784 states and 66461 transitions. Second operand 3 states. [2019-09-10 07:30:51,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:30:51,950 INFO L93 Difference]: Finished difference Result 40349 states and 54176 transitions. [2019-09-10 07:30:51,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:30:51,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2019-09-10 07:30:51,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:30:52,000 INFO L225 Difference]: With dead ends: 40349 [2019-09-10 07:30:52,000 INFO L226 Difference]: Without dead ends: 40349 [2019-09-10 07:30:52,001 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:30:52,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40349 states. [2019-09-10 07:30:52,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40349 to 40349. [2019-09-10 07:30:52,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40349 states. [2019-09-10 07:30:52,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40349 states to 40349 states and 54176 transitions. [2019-09-10 07:30:52,465 INFO L78 Accepts]: Start accepts. Automaton has 40349 states and 54176 transitions. Word has length 67 [2019-09-10 07:30:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:30:52,465 INFO L475 AbstractCegarLoop]: Abstraction has 40349 states and 54176 transitions. [2019-09-10 07:30:52,466 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:30:52,466 INFO L276 IsEmpty]: Start isEmpty. Operand 40349 states and 54176 transitions. [2019-09-10 07:30:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 07:30:52,468 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:30:52,468 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:30:52,469 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:30:52,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:30:52,469 INFO L82 PathProgramCache]: Analyzing trace with hash -217937935, now seen corresponding path program 1 times [2019-09-10 07:30:52,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:30:52,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:52,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:30:52,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:52,470 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:30:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:30:52,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:30:52,520 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:30:52,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:30:52,520 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:30:52,521 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:30:52,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:30:52,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:30:52,521 INFO L87 Difference]: Start difference. First operand 40349 states and 54176 transitions. Second operand 3 states. [2019-09-10 07:30:52,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:30:52,613 INFO L93 Difference]: Finished difference Result 38817 states and 50875 transitions. [2019-09-10 07:30:52,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:30:52,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-09-10 07:30:52,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:30:52,656 INFO L225 Difference]: With dead ends: 38817 [2019-09-10 07:30:52,656 INFO L226 Difference]: Without dead ends: 38817 [2019-09-10 07:30:52,656 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:30:52,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38817 states. [2019-09-10 07:30:52,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38817 to 37570. [2019-09-10 07:30:52,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37570 states. [2019-09-10 07:30:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37570 states to 37570 states and 49629 transitions. [2019-09-10 07:30:52,961 INFO L78 Accepts]: Start accepts. Automaton has 37570 states and 49629 transitions. Word has length 68 [2019-09-10 07:30:52,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:30:52,962 INFO L475 AbstractCegarLoop]: Abstraction has 37570 states and 49629 transitions. [2019-09-10 07:30:52,962 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:30:52,962 INFO L276 IsEmpty]: Start isEmpty. Operand 37570 states and 49629 transitions. [2019-09-10 07:30:52,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 07:30:52,963 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:30:52,964 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:30:52,964 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:30:52,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:30:52,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1310845681, now seen corresponding path program 1 times [2019-09-10 07:30:52,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:30:52,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:52,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:30:52,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:52,966 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:30:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:30:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:30:53,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:30:53,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:30:53,003 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:30:53,003 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:30:53,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:30:53,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:30:53,004 INFO L87 Difference]: Start difference. First operand 37570 states and 49629 transitions. Second operand 3 states. [2019-09-10 07:30:53,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:30:53,046 INFO L93 Difference]: Finished difference Result 17125 states and 22096 transitions. [2019-09-10 07:30:53,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:30:53,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-09-10 07:30:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:30:53,063 INFO L225 Difference]: With dead ends: 17125 [2019-09-10 07:30:53,063 INFO L226 Difference]: Without dead ends: 17125 [2019-09-10 07:30:53,064 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:30:53,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17125 states. [2019-09-10 07:30:53,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17125 to 17123. [2019-09-10 07:30:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17123 states. [2019-09-10 07:30:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17123 states to 17123 states and 22095 transitions. [2019-09-10 07:30:53,188 INFO L78 Accepts]: Start accepts. Automaton has 17123 states and 22095 transitions. Word has length 68 [2019-09-10 07:30:53,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:30:53,188 INFO L475 AbstractCegarLoop]: Abstraction has 17123 states and 22095 transitions. [2019-09-10 07:30:53,188 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:30:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 17123 states and 22095 transitions. [2019-09-10 07:30:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-09-10 07:30:53,189 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:30:53,189 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:30:53,189 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:30:53,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:30:53,190 INFO L82 PathProgramCache]: Analyzing trace with hash -2039229901, now seen corresponding path program 1 times [2019-09-10 07:30:53,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:30:53,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:53,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:30:53,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:53,191 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:30:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:30:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-10 07:30:53,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:30:53,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:30:53,224 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:30:53,225 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:30:53,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:30:53,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:30:53,225 INFO L87 Difference]: Start difference. First operand 17123 states and 22095 transitions. Second operand 3 states. [2019-09-10 07:30:53,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:30:53,284 INFO L93 Difference]: Finished difference Result 13644 states and 17365 transitions. [2019-09-10 07:30:53,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:30:53,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2019-09-10 07:30:53,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:30:53,300 INFO L225 Difference]: With dead ends: 13644 [2019-09-10 07:30:53,300 INFO L226 Difference]: Without dead ends: 13644 [2019-09-10 07:30:53,300 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:30:53,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13644 states. [2019-09-10 07:30:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13644 to 13644. [2019-09-10 07:30:53,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13644 states. [2019-09-10 07:30:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13644 states to 13644 states and 17365 transitions. [2019-09-10 07:30:53,436 INFO L78 Accepts]: Start accepts. Automaton has 13644 states and 17365 transitions. Word has length 68 [2019-09-10 07:30:53,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:30:53,437 INFO L475 AbstractCegarLoop]: Abstraction has 13644 states and 17365 transitions. [2019-09-10 07:30:53,437 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:30:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 13644 states and 17365 transitions. [2019-09-10 07:30:53,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-10 07:30:53,438 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:30:53,438 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:30:53,439 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:30:53,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:30:53,439 INFO L82 PathProgramCache]: Analyzing trace with hash 59080277, now seen corresponding path program 1 times [2019-09-10 07:30:53,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:30:53,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:53,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:30:53,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:30:53,440 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:30:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:30:54,243 WARN L188 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2019-09-10 07:30:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:30:55,119 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:30:55,119 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:30:55,119 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 70 with the following transitions: [2019-09-10 07:30:55,120 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [139], [142], [145], [147], [155], [160], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:30:55,121 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:30:55,121 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:30:55,130 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:30:55,288 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:30:55,288 INFO L272 AbstractInterpreter]: Visited 62 different actions 420 times. Merged at 39 different actions 318 times. Widened at 12 different actions 42 times. Performed 1485 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1485 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 39 fixpoints after 14 different actions. Largest state had 90 variables. [2019-09-10 07:30:55,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:30:55,288 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:30:55,289 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:30:55,289 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:30:55,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:30:55,307 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:30:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:30:55,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 31 conjunts are in the unsatisfiable core [2019-09-10 07:30:55,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:30:55,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:55,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:56,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:30:56,573 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:30:56,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:57,385 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:57,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:57,386 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:57,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:57,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:57,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:57,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:30:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:30:57,426 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:30:57,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 14] total 48 [2019-09-10 07:30:57,427 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:30:57,430 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-10 07:30:57,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-10 07:30:57,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2086, Unknown=0, NotChecked=0, Total=2256 [2019-09-10 07:30:57,431 INFO L87 Difference]: Start difference. First operand 13644 states and 17365 transitions. Second operand 36 states. [2019-09-10 07:30:58,314 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2019-09-10 07:30:58,555 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2019-09-10 07:30:58,742 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-09-10 07:30:58,953 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-09-10 07:30:59,171 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-10 07:30:59,411 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2019-09-10 07:30:59,710 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2019-09-10 07:31:00,001 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-10 07:31:00,186 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 07:31:00,494 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-10 07:31:00,728 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:31:00,910 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 39 [2019-09-10 07:31:01,234 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 07:31:01,526 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-10 07:31:01,729 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 40 [2019-09-10 07:31:01,996 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2019-09-10 07:31:02,307 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-10 07:31:02,790 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-10 07:31:03,081 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-10 07:31:03,232 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-09-10 07:31:03,421 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 36 [2019-09-10 07:31:03,646 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 07:31:03,951 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2019-09-10 07:31:05,771 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2019-09-10 07:31:05,939 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 07:31:06,874 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-10 07:31:07,062 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-10 07:31:07,486 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2019-09-10 07:31:07,647 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 45 [2019-09-10 07:31:07,846 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-10 07:31:08,559 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 07:31:08,863 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2019-09-10 07:31:09,175 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2019-09-10 07:31:09,444 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:31:09,732 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-10 07:31:10,082 WARN L188 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 89 [2019-09-10 07:31:10,455 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2019-09-10 07:31:10,753 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 07:31:11,036 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-10 07:31:11,232 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 07:31:11,444 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:31:11,615 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-10 07:31:11,814 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-10 07:31:11,961 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2019-09-10 07:31:12,128 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 07:31:12,317 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 07:31:12,491 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-10 07:31:12,737 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:31:12,920 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:31:13,136 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-10 07:31:13,308 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2019-09-10 07:31:13,653 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 07:31:13,837 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-10 07:31:14,074 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:31:14,262 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-10 07:31:14,472 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-10 07:31:14,749 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-10 07:31:14,991 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-10 07:31:15,374 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:31:15,583 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-10 07:31:15,774 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-10 07:31:16,050 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:31:16,256 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-10 07:31:16,472 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2019-09-10 07:31:16,666 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-10 07:31:16,978 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-10 07:31:17,155 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-10 07:31:17,373 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2019-09-10 07:31:17,606 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 07:31:17,887 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-10 07:31:18,030 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-10 07:31:18,561 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 07:31:18,749 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-10 07:31:19,473 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-10 07:31:19,646 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-10 07:31:19,883 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-10 07:31:20,068 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:31:20,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:20,154 INFO L93 Difference]: Finished difference Result 26185 states and 33680 transitions. [2019-09-10 07:31:20,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2019-09-10 07:31:20,158 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 69 [2019-09-10 07:31:20,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:20,182 INFO L225 Difference]: With dead ends: 26185 [2019-09-10 07:31:20,182 INFO L226 Difference]: Without dead ends: 26185 [2019-09-10 07:31:20,183 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8338 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=3740, Invalid=22666, Unknown=0, NotChecked=0, Total=26406 [2019-09-10 07:31:20,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26185 states. [2019-09-10 07:31:20,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26185 to 16089. [2019-09-10 07:31:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16089 states. [2019-09-10 07:31:20,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16089 states to 16089 states and 20593 transitions. [2019-09-10 07:31:20,328 INFO L78 Accepts]: Start accepts. Automaton has 16089 states and 20593 transitions. Word has length 69 [2019-09-10 07:31:20,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:20,328 INFO L475 AbstractCegarLoop]: Abstraction has 16089 states and 20593 transitions. [2019-09-10 07:31:20,328 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-10 07:31:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 16089 states and 20593 transitions. [2019-09-10 07:31:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-10 07:31:20,329 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:20,329 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:31:20,330 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:20,330 INFO L82 PathProgramCache]: Analyzing trace with hash -156963844, now seen corresponding path program 1 times [2019-09-10 07:31:20,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:20,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:20,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:20,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:20,331 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:21,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:21,086 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:31:21,086 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 70 with the following transitions: [2019-09-10 07:31:21,086 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [77], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [130], [135], [139], [142], [145], [147], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:31:21,087 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:31:21,087 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:31:21,095 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:31:21,260 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:31:21,261 INFO L272 AbstractInterpreter]: Visited 62 different actions 410 times. Merged at 39 different actions 309 times. Widened at 9 different actions 34 times. Performed 1470 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1470 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 37 fixpoints after 10 different actions. Largest state had 90 variables. [2019-09-10 07:31:21,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:21,261 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:31:21,261 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:21,261 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:31:21,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:21,284 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:31:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:21,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-10 07:31:21,701 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:31:21,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:22,193 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:31:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:22,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:31:22,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 38 [2019-09-10 07:31:22,722 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:31:22,722 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 07:31:22,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 07:31:22,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1265, Unknown=0, NotChecked=0, Total=1406 [2019-09-10 07:31:22,722 INFO L87 Difference]: Start difference. First operand 16089 states and 20593 transitions. Second operand 28 states. [2019-09-10 07:31:24,019 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 35 [2019-09-10 07:31:24,259 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 44 [2019-09-10 07:31:24,520 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2019-09-10 07:31:24,800 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2019-09-10 07:31:25,101 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 59 [2019-09-10 07:31:25,381 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2019-09-10 07:31:25,807 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2019-09-10 07:31:26,022 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2019-09-10 07:31:26,296 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 37 [2019-09-10 07:31:26,552 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2019-09-10 07:31:26,728 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2019-09-10 07:31:26,953 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-09-10 07:31:27,191 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-09-10 07:31:28,433 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 39 [2019-09-10 07:31:28,758 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2019-09-10 07:31:29,042 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 34 [2019-09-10 07:31:29,332 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 31 [2019-09-10 07:31:29,726 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41 [2019-09-10 07:31:30,066 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 43 [2019-09-10 07:31:30,318 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 60 [2019-09-10 07:31:30,486 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2019-09-10 07:31:30,721 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2019-09-10 07:31:30,890 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2019-09-10 07:31:31,147 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 56 [2019-09-10 07:31:31,531 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2019-09-10 07:31:31,791 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 45 [2019-09-10 07:31:32,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:32,216 INFO L93 Difference]: Finished difference Result 24986 states and 31617 transitions. [2019-09-10 07:31:32,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-10 07:31:32,216 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 69 [2019-09-10 07:31:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:32,237 INFO L225 Difference]: With dead ends: 24986 [2019-09-10 07:31:32,237 INFO L226 Difference]: Without dead ends: 24986 [2019-09-10 07:31:32,238 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1465, Invalid=5845, Unknown=0, NotChecked=0, Total=7310 [2019-09-10 07:31:32,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24986 states. [2019-09-10 07:31:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24986 to 12649. [2019-09-10 07:31:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12649 states. [2019-09-10 07:31:32,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12649 states to 12649 states and 16075 transitions. [2019-09-10 07:31:32,362 INFO L78 Accepts]: Start accepts. Automaton has 12649 states and 16075 transitions. Word has length 69 [2019-09-10 07:31:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:32,363 INFO L475 AbstractCegarLoop]: Abstraction has 12649 states and 16075 transitions. [2019-09-10 07:31:32,363 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-10 07:31:32,363 INFO L276 IsEmpty]: Start isEmpty. Operand 12649 states and 16075 transitions. [2019-09-10 07:31:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-10 07:31:32,364 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:32,364 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:31:32,364 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:32,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:32,365 INFO L82 PathProgramCache]: Analyzing trace with hash -723465889, now seen corresponding path program 1 times [2019-09-10 07:31:32,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:32,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:32,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:32,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:32,366 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:32,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:32,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:31:32,411 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:32,412 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:31:32,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:31:32,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:31:32,412 INFO L87 Difference]: Start difference. First operand 12649 states and 16075 transitions. Second operand 3 states. [2019-09-10 07:31:32,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:32,428 INFO L93 Difference]: Finished difference Result 3903 states and 4928 transitions. [2019-09-10 07:31:32,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:31:32,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-09-10 07:31:32,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:32,432 INFO L225 Difference]: With dead ends: 3903 [2019-09-10 07:31:32,432 INFO L226 Difference]: Without dead ends: 3903 [2019-09-10 07:31:32,432 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:31:32,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2019-09-10 07:31:32,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3757. [2019-09-10 07:31:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3757 states. [2019-09-10 07:31:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3757 states to 3757 states and 4771 transitions. [2019-09-10 07:31:32,474 INFO L78 Accepts]: Start accepts. Automaton has 3757 states and 4771 transitions. Word has length 69 [2019-09-10 07:31:32,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:32,475 INFO L475 AbstractCegarLoop]: Abstraction has 3757 states and 4771 transitions. [2019-09-10 07:31:32,475 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:31:32,475 INFO L276 IsEmpty]: Start isEmpty. Operand 3757 states and 4771 transitions. [2019-09-10 07:31:32,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-09-10 07:31:32,476 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:32,476 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:31:32,476 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:32,477 INFO L82 PathProgramCache]: Analyzing trace with hash -628683308, now seen corresponding path program 1 times [2019-09-10 07:31:32,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:32,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:32,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:32,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:32,478 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-10 07:31:32,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 07:31:32,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 07:31:32,519 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 07:31:32,520 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 07:31:32,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 07:31:32,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:31:32,520 INFO L87 Difference]: Start difference. First operand 3757 states and 4771 transitions. Second operand 3 states. [2019-09-10 07:31:32,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:32,556 INFO L93 Difference]: Finished difference Result 1316 states and 1672 transitions. [2019-09-10 07:31:32,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 07:31:32,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-09-10 07:31:32,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:32,558 INFO L225 Difference]: With dead ends: 1316 [2019-09-10 07:31:32,558 INFO L226 Difference]: Without dead ends: 1316 [2019-09-10 07:31:32,559 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 07:31:32,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2019-09-10 07:31:32,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1316. [2019-09-10 07:31:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1316 states. [2019-09-10 07:31:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1672 transitions. [2019-09-10 07:31:32,576 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1672 transitions. Word has length 69 [2019-09-10 07:31:32,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:32,576 INFO L475 AbstractCegarLoop]: Abstraction has 1316 states and 1672 transitions. [2019-09-10 07:31:32,576 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 07:31:32,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1672 transitions. [2019-09-10 07:31:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-10 07:31:32,577 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:32,578 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-10 07:31:32,578 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:32,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:32,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1308029272, now seen corresponding path program 1 times [2019-09-10 07:31:32,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:32,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:32,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:32,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:32,580 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:33,173 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2019-09-10 07:31:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:33,680 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:33,680 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:31:33,680 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 71 with the following transitions: [2019-09-10 07:31:33,680 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [130], [135], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [180], [185], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:31:33,684 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:31:33,684 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:31:33,693 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:31:33,876 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:31:33,876 INFO L272 AbstractInterpreter]: Visited 63 different actions 450 times. Merged at 40 different actions 344 times. Widened at 11 different actions 44 times. Performed 1646 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1646 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 39 fixpoints after 14 different actions. Largest state had 90 variables. [2019-09-10 07:31:33,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:33,877 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:31:33,877 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:33,877 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:31:33,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:33,893 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:31:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:33,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-10 07:31:33,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:31:34,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:34,631 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:31:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:35,540 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:31:35,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 12] total 36 [2019-09-10 07:31:35,541 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:31:35,541 INFO L454 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-09-10 07:31:35,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-09-10 07:31:35,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2019-09-10 07:31:35,542 INFO L87 Difference]: Start difference. First operand 1316 states and 1672 transitions. Second operand 29 states. [2019-09-10 07:31:36,437 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 35 [2019-09-10 07:31:36,668 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 49 [2019-09-10 07:31:36,943 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 49 [2019-09-10 07:31:37,138 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 35 [2019-09-10 07:31:37,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:31:37,920 INFO L93 Difference]: Finished difference Result 1717 states and 2219 transitions. [2019-09-10 07:31:37,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-10 07:31:37,921 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 70 [2019-09-10 07:31:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:31:37,922 INFO L225 Difference]: With dead ends: 1717 [2019-09-10 07:31:37,922 INFO L226 Difference]: Without dead ends: 1717 [2019-09-10 07:31:37,923 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=396, Invalid=2256, Unknown=0, NotChecked=0, Total=2652 [2019-09-10 07:31:37,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2019-09-10 07:31:37,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1258. [2019-09-10 07:31:37,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2019-09-10 07:31:37,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1608 transitions. [2019-09-10 07:31:37,931 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1608 transitions. Word has length 70 [2019-09-10 07:31:37,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:31:37,931 INFO L475 AbstractCegarLoop]: Abstraction has 1258 states and 1608 transitions. [2019-09-10 07:31:37,931 INFO L476 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-09-10 07:31:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1608 transitions. [2019-09-10 07:31:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2019-09-10 07:31:37,933 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:31:37,933 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:31:37,933 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:31:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:37,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2078023252, now seen corresponding path program 1 times [2019-09-10 07:31:37,934 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:31:37,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:37,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:37,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:31:37,935 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:31:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:38,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:38,441 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:31:38,441 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 111 with the following transitions: [2019-09-10 07:31:38,441 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [100], [104], [106], [109], [110], [112], [114], [119], [121], [124], [137], [139], [142], [145], [147], [162], [164], [167], [170], [172], [180], [185], [187], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:31:38,443 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:31:38,443 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:31:38,450 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:31:38,711 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:31:38,711 INFO L272 AbstractInterpreter]: Visited 66 different actions 728 times. Merged at 43 different actions 522 times. Widened at 20 different actions 111 times. Performed 2481 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2481 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 121 fixpoints after 23 different actions. Largest state had 90 variables. [2019-09-10 07:31:38,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:31:38,711 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:31:38,711 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:31:38,712 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:31:38,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:31:38,725 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:31:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:31:38,808 INFO L256 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-10 07:31:38,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:31:39,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:39,446 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:31:39,640 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:41,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:41,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:41,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:41,589 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:41,790 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 27 [2019-09-10 07:31:42,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:31:43,151 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:31:43,154 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:31:43,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 36 [2019-09-10 07:31:43,155 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:31:43,155 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-10 07:31:43,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-10 07:31:43,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2019-09-10 07:31:43,156 INFO L87 Difference]: Start difference. First operand 1258 states and 1608 transitions. Second operand 26 states. [2019-09-10 07:31:43,340 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-10 07:31:45,798 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-09-10 07:31:46,037 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2019-09-10 07:31:46,371 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-10 07:31:46,735 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 07:31:47,047 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-10 07:31:47,237 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-10 07:31:47,511 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-10 07:31:47,755 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2019-09-10 07:31:48,081 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-09-10 07:31:48,287 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2019-09-10 07:31:48,483 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2019-09-10 07:31:48,633 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-10 07:31:49,120 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-10 07:31:50,136 WARN L188 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2019-09-10 07:31:51,384 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-10 07:31:51,594 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-10 07:31:51,813 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2019-09-10 07:31:52,154 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-10 07:31:52,359 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-10 07:31:53,181 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2019-09-10 07:31:53,362 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-10 07:31:53,643 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-10 07:31:53,821 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-10 07:31:54,236 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-10 07:31:54,607 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-10 07:31:54,930 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-10 07:31:56,384 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-10 07:31:57,007 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-10 07:31:57,279 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-10 07:31:57,652 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 55 [2019-09-10 07:31:59,023 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-10 07:31:59,214 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2019-09-10 07:32:00,940 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2019-09-10 07:32:02,141 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-09-10 07:32:03,074 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-10 07:32:04,246 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 07:32:04,616 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-10 07:32:04,804 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:32:05,056 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 07:32:05,291 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2019-09-10 07:32:05,544 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-10 07:32:05,740 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:32:06,097 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 07:32:06,524 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-10 07:32:07,091 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:32:07,296 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 07:32:07,568 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2019-09-10 07:32:07,865 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 07:32:08,163 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-10 07:32:08,386 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 07:32:08,631 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-09-10 07:32:08,874 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-10 07:32:09,556 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-10 07:32:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:32:09,568 INFO L93 Difference]: Finished difference Result 4567 states and 5767 transitions. [2019-09-10 07:32:09,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2019-09-10 07:32:09,569 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 110 [2019-09-10 07:32:09,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:32:09,574 INFO L225 Difference]: With dead ends: 4567 [2019-09-10 07:32:09,574 INFO L226 Difference]: Without dead ends: 4567 [2019-09-10 07:32:09,577 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 167 SyntacticMatches, 35 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7875 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=3602, Invalid=19654, Unknown=0, NotChecked=0, Total=23256 [2019-09-10 07:32:09,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2019-09-10 07:32:09,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 1519. [2019-09-10 07:32:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2019-09-10 07:32:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1937 transitions. [2019-09-10 07:32:09,592 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1937 transitions. Word has length 110 [2019-09-10 07:32:09,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:32:09,592 INFO L475 AbstractCegarLoop]: Abstraction has 1519 states and 1937 transitions. [2019-09-10 07:32:09,592 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-10 07:32:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1937 transitions. [2019-09-10 07:32:09,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-10 07:32:09,594 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:32:09,594 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:32:09,594 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:32:09,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:32:09,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1830097375, now seen corresponding path program 1 times [2019-09-10 07:32:09,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:32:09,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:32:09,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:32:09,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:32:09,596 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:32:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:32:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:32:09,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:32:09,890 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:32:09,890 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 112 with the following transitions: [2019-09-10 07:32:09,891 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [130], [133], [139], [142], [145], [147], [155], [160], [162], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:32:09,892 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:32:09,892 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:32:09,903 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:32:10,179 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:32:10,180 INFO L272 AbstractInterpreter]: Visited 66 different actions 672 times. Merged at 43 different actions 506 times. Widened at 15 different actions 74 times. Performed 2333 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2333 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 94 fixpoints after 19 different actions. Largest state had 90 variables. [2019-09-10 07:32:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:32:10,180 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:32:10,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:32:10,180 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:32:10,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:32:10,212 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:32:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:32:10,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 644 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-10 07:32:10,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:32:10,418 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:10,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:10,486 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:10,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:32:10,715 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:32:11,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:11,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:11,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:11,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:11,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:11,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:11,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:11,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:11,178 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 41 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:32:11,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:32:11,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2019-09-10 07:32:11,182 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:32:11,183 INFO L454 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-09-10 07:32:11,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-09-10 07:32:11,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2019-09-10 07:32:11,183 INFO L87 Difference]: Start difference. First operand 1519 states and 1937 transitions. Second operand 22 states. [2019-09-10 07:32:12,823 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-10 07:32:13,011 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-10 07:32:13,171 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:32:13,334 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-09-10 07:32:13,597 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2019-09-10 07:32:14,065 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2019-09-10 07:32:14,373 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-10 07:32:14,547 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2019-09-10 07:32:14,823 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:32:14,983 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2019-09-10 07:32:15,847 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2019-09-10 07:32:16,000 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:32:16,183 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 07:32:16,373 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-10 07:32:16,529 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-09-10 07:32:16,971 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-09-10 07:32:17,123 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:32:17,266 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 07:32:17,579 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-10 07:32:17,871 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 07:32:18,097 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-09-10 07:32:18,259 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:32:18,445 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-10 07:32:18,964 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-10 07:32:19,466 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-10 07:32:19,999 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-10 07:32:20,208 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2019-09-10 07:32:20,606 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-09-10 07:32:20,949 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2019-09-10 07:32:21,288 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-10 07:32:21,699 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2019-09-10 07:32:21,887 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-10 07:32:22,038 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-09-10 07:32:22,247 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2019-09-10 07:32:22,486 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2019-09-10 07:32:22,781 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2019-09-10 07:32:22,977 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2019-09-10 07:32:23,300 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-10 07:32:23,513 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-09-10 07:32:23,700 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2019-09-10 07:32:23,872 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-10 07:32:24,198 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2019-09-10 07:32:24,829 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-10 07:32:25,055 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2019-09-10 07:32:25,325 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2019-09-10 07:32:25,562 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-10 07:32:25,710 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-10 07:32:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:32:25,858 INFO L93 Difference]: Finished difference Result 10921 states and 13956 transitions. [2019-09-10 07:32:25,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2019-09-10 07:32:25,858 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 111 [2019-09-10 07:32:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:32:25,868 INFO L225 Difference]: With dead ends: 10921 [2019-09-10 07:32:25,868 INFO L226 Difference]: Without dead ends: 10921 [2019-09-10 07:32:25,869 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4580 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=3064, Invalid=13706, Unknown=0, NotChecked=0, Total=16770 [2019-09-10 07:32:25,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10921 states. [2019-09-10 07:32:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10921 to 4008. [2019-09-10 07:32:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4008 states. [2019-09-10 07:32:25,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4008 states to 4008 states and 5037 transitions. [2019-09-10 07:32:25,910 INFO L78 Accepts]: Start accepts. Automaton has 4008 states and 5037 transitions. Word has length 111 [2019-09-10 07:32:25,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:32:25,910 INFO L475 AbstractCegarLoop]: Abstraction has 4008 states and 5037 transitions. [2019-09-10 07:32:25,910 INFO L476 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-09-10 07:32:25,910 INFO L276 IsEmpty]: Start isEmpty. Operand 4008 states and 5037 transitions. [2019-09-10 07:32:25,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-10 07:32:25,912 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:32:25,912 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:32:25,912 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:32:25,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:32:25,913 INFO L82 PathProgramCache]: Analyzing trace with hash 872914104, now seen corresponding path program 1 times [2019-09-10 07:32:25,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:32:25,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:32:25,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:32:25,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:32:25,914 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:32:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:32:26,290 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:32:26,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:32:26,290 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:32:26,291 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 112 with the following transitions: [2019-09-10 07:32:26,292 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [130], [133], [139], [142], [145], [147], [162], [164], [167], [170], [172], [180], [183], [185], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:32:26,294 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:32:26,294 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:32:26,305 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:32:26,578 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:32:26,579 INFO L272 AbstractInterpreter]: Visited 65 different actions 733 times. Merged at 42 different actions 555 times. Widened at 17 different actions 97 times. Performed 2592 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2592 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 105 fixpoints after 19 different actions. Largest state had 90 variables. [2019-09-10 07:32:26,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:32:26,579 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:32:26,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:32:26,579 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:32:26,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:32:26,598 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:32:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:32:26,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 28 conjunts are in the unsatisfiable core [2019-09-10 07:32:26,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:32:27,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:27,179 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:27,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:27,598 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:32:28,162 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:32:28,643 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:28,644 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:28,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:29,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:29,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:29,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:29,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:30,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-10 07:32:30,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:30,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:30,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:32:31,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-10 07:32:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 13 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:32:32,091 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:32:32,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 18] total 47 [2019-09-10 07:32:32,091 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:32:32,092 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-10 07:32:32,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-10 07:32:32,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2027, Unknown=0, NotChecked=0, Total=2162 [2019-09-10 07:32:32,092 INFO L87 Difference]: Start difference. First operand 4008 states and 5037 transitions. Second operand 31 states. [2019-09-10 07:32:32,343 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2019-09-10 07:32:33,795 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2019-09-10 07:32:33,982 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 07:32:34,207 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-10 07:32:34,462 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-10 07:32:34,666 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-10 07:32:34,894 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-10 07:32:35,167 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-10 07:32:35,389 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-10 07:32:35,758 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-10 07:32:36,015 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-09-10 07:32:36,389 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 07:32:36,731 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2019-09-10 07:32:37,333 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-09-10 07:32:40,310 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 07:32:41,018 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-10 07:32:41,751 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-10 07:32:42,044 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:32:44,146 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-10 07:32:44,357 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2019-09-10 07:32:44,860 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 07:32:45,184 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-10 07:32:45,716 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-10 07:32:46,179 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-10 07:32:46,399 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-09-10 07:32:47,462 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-10 07:32:50,590 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 07:32:51,560 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 07:32:51,799 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-10 07:32:52,003 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-10 07:32:52,413 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 07:32:53,327 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-10 07:32:54,140 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 07:32:54,977 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 07:32:55,533 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2019-09-10 07:32:56,747 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-10 07:32:57,022 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-10 07:32:57,270 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2019-09-10 07:32:57,743 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 07:32:58,530 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 07:32:58,815 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-10 07:32:59,240 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 07:32:59,480 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-10 07:32:59,734 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-10 07:33:00,961 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2019-09-10 07:33:01,210 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-10 07:33:01,774 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-10 07:33:02,074 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 07:33:02,375 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-10 07:33:03,169 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-10 07:33:03,853 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-10 07:33:04,218 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2019-09-10 07:33:05,832 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:06,134 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-10 07:33:06,571 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-10 07:33:07,057 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:33:08,339 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-10 07:33:08,705 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2019-09-10 07:33:09,176 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-10 07:33:09,864 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-10 07:33:10,629 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-10 07:33:11,166 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 07:33:11,588 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:12,262 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:12,784 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-10 07:33:14,373 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2019-09-10 07:33:15,390 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 07:33:19,433 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 07:33:21,280 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 07:33:22,257 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-10 07:33:22,593 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:23,670 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 07:33:24,169 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 07:33:24,458 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:26,471 WARN L188 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 07:33:27,440 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-10 07:33:28,272 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-10 07:33:32,994 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-10 07:33:34,440 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-10 07:33:34,697 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:36,200 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:36,508 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-10 07:33:39,031 WARN L188 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2019-09-10 07:33:42,286 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-09-10 07:33:43,432 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:45,087 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2019-09-10 07:33:45,716 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:46,781 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2019-09-10 07:33:47,176 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-09-10 07:33:48,138 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:33:49,804 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:33:51,135 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:52,963 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-09-10 07:33:56,468 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-09-10 07:33:57,213 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-10 07:33:58,410 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:33:59,466 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2019-09-10 07:33:59,711 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-10 07:34:00,769 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-10 07:34:01,236 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-10 07:34:02,144 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2019-09-10 07:34:03,526 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-10 07:34:04,159 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-10 07:34:06,223 WARN L188 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:34:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:34:06,239 INFO L93 Difference]: Finished difference Result 12987 states and 16354 transitions. [2019-09-10 07:34:06,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 319 states. [2019-09-10 07:34:06,240 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 111 [2019-09-10 07:34:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:34:06,248 INFO L225 Difference]: With dead ends: 12987 [2019-09-10 07:34:06,248 INFO L226 Difference]: Without dead ends: 12987 [2019-09-10 07:34:06,253 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 162 SyntacticMatches, 30 SemanticMatches, 362 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52875 ImplicationChecksByTransitivity, 71.0s TimeCoverageRelationStatistics Valid=10648, Invalid=121484, Unknown=0, NotChecked=0, Total=132132 [2019-09-10 07:34:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2019-09-10 07:34:06,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 3401. [2019-09-10 07:34:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3401 states. [2019-09-10 07:34:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3401 states to 3401 states and 4288 transitions. [2019-09-10 07:34:06,300 INFO L78 Accepts]: Start accepts. Automaton has 3401 states and 4288 transitions. Word has length 111 [2019-09-10 07:34:06,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:34:06,300 INFO L475 AbstractCegarLoop]: Abstraction has 3401 states and 4288 transitions. [2019-09-10 07:34:06,300 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-10 07:34:06,300 INFO L276 IsEmpty]: Start isEmpty. Operand 3401 states and 4288 transitions. [2019-09-10 07:34:06,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-10 07:34:06,302 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:34:06,302 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2019-09-10 07:34:06,302 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:34:06,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:34:06,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1353125581, now seen corresponding path program 1 times [2019-09-10 07:34:06,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:34:06,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:34:06,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:34:06,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:34:06,304 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:34:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:34:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:34:06,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:34:06,651 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:34:06,651 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-10 07:34:06,652 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [139], [142], [145], [147], [155], [158], [160], [164], [167], [170], [172], [180], [183], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:34:06,653 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:34:06,653 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:34:06,663 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:34:06,900 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:34:06,901 INFO L272 AbstractInterpreter]: Visited 64 different actions 606 times. Merged at 41 different actions 461 times. Widened at 14 different actions 83 times. Performed 2152 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2152 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 78 fixpoints after 14 different actions. Largest state had 90 variables. [2019-09-10 07:34:06,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:34:06,901 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:34:06,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:34:06,901 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:34:06,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:34:06,927 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:34:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:34:07,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 41 conjunts are in the unsatisfiable core [2019-09-10 07:34:07,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:34:07,260 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:07,356 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:07,415 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:07,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:07,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:34:07,997 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:34:08,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,281 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-09-10 07:34:09,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,289 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:09,675 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 37 [2019-09-10 07:34:11,144 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-10 07:34:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:34:11,242 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:34:11,242 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 22] total 56 [2019-09-10 07:34:11,242 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:34:11,243 INFO L454 AbstractCegarLoop]: Interpolant automaton has 36 states [2019-09-10 07:34:11,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2019-09-10 07:34:11,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=2733, Unknown=0, NotChecked=0, Total=3080 [2019-09-10 07:34:11,244 INFO L87 Difference]: Start difference. First operand 3401 states and 4288 transitions. Second operand 36 states. [2019-09-10 07:34:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:34:15,634 INFO L93 Difference]: Finished difference Result 6761 states and 8392 transitions. [2019-09-10 07:34:15,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-10 07:34:15,635 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 112 [2019-09-10 07:34:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:34:15,639 INFO L225 Difference]: With dead ends: 6761 [2019-09-10 07:34:15,639 INFO L226 Difference]: Without dead ends: 6761 [2019-09-10 07:34:15,640 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 171 SyntacticMatches, 16 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3025 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1125, Invalid=7617, Unknown=0, NotChecked=0, Total=8742 [2019-09-10 07:34:15,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6761 states. [2019-09-10 07:34:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6761 to 4998. [2019-09-10 07:34:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4998 states. [2019-09-10 07:34:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4998 states to 4998 states and 6289 transitions. [2019-09-10 07:34:15,672 INFO L78 Accepts]: Start accepts. Automaton has 4998 states and 6289 transitions. Word has length 112 [2019-09-10 07:34:15,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:34:15,673 INFO L475 AbstractCegarLoop]: Abstraction has 4998 states and 6289 transitions. [2019-09-10 07:34:15,673 INFO L476 AbstractCegarLoop]: Interpolant automaton has 36 states. [2019-09-10 07:34:15,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4998 states and 6289 transitions. [2019-09-10 07:34:15,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-10 07:34:15,674 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:34:15,674 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2019-09-10 07:34:15,674 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:34:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:34:15,675 INFO L82 PathProgramCache]: Analyzing trace with hash -360306566, now seen corresponding path program 1 times [2019-09-10 07:34:15,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:34:15,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:34:15,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:34:15,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:34:15,676 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:34:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:34:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:34:16,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:34:16,655 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:34:16,655 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-10 07:34:16,655 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [77], [79], [81], [84], [87], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [130], [133], [135], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:34:16,657 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:34:16,657 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:34:16,665 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:34:16,908 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:34:16,909 INFO L272 AbstractInterpreter]: Visited 64 different actions 686 times. Merged at 41 different actions 525 times. Widened at 15 different actions 86 times. Performed 2343 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2343 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 94 fixpoints after 17 different actions. Largest state had 90 variables. [2019-09-10 07:34:16,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:34:16,909 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:34:16,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:34:16,909 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:34:16,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:34:16,926 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:34:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:34:17,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 39 conjunts are in the unsatisfiable core [2019-09-10 07:34:17,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:34:17,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:17,824 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:34:18,229 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:34:18,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,506 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 35 [2019-09-10 07:34:19,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,508 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,510 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:19,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:20,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:20,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:20,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:20,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-10 07:34:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:34:21,342 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:34:21,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 23] total 62 [2019-09-10 07:34:21,342 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:34:21,343 INFO L454 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-09-10 07:34:21,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-09-10 07:34:21,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=3512, Unknown=0, NotChecked=0, Total=3782 [2019-09-10 07:34:21,344 INFO L87 Difference]: Start difference. First operand 4998 states and 6289 transitions. Second operand 41 states. [2019-09-10 07:34:21,747 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 77 [2019-09-10 07:34:23,206 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2019-09-10 07:34:23,413 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2019-09-10 07:34:23,631 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2019-09-10 07:34:26,108 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-09-10 07:34:26,625 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-09-10 07:34:26,878 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-10 07:34:27,528 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-10 07:34:27,864 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2019-09-10 07:34:28,073 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-10 07:34:28,356 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 07:34:28,612 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2019-09-10 07:34:29,098 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-10 07:34:29,610 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2019-09-10 07:34:29,889 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-09-10 07:34:30,282 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2019-09-10 07:34:30,634 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2019-09-10 07:34:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:34:33,610 INFO L93 Difference]: Finished difference Result 5699 states and 7123 transitions. [2019-09-10 07:34:33,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-10 07:34:33,610 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 112 [2019-09-10 07:34:33,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:34:33,614 INFO L225 Difference]: With dead ends: 5699 [2019-09-10 07:34:33,614 INFO L226 Difference]: Without dead ends: 5699 [2019-09-10 07:34:33,615 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 175 SyntacticMatches, 9 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3008 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=1331, Invalid=12475, Unknown=0, NotChecked=0, Total=13806 [2019-09-10 07:34:33,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5699 states. [2019-09-10 07:34:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5699 to 5062. [2019-09-10 07:34:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5062 states. [2019-09-10 07:34:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5062 states to 5062 states and 6360 transitions. [2019-09-10 07:34:33,647 INFO L78 Accepts]: Start accepts. Automaton has 5062 states and 6360 transitions. Word has length 112 [2019-09-10 07:34:33,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:34:33,647 INFO L475 AbstractCegarLoop]: Abstraction has 5062 states and 6360 transitions. [2019-09-10 07:34:33,647 INFO L476 AbstractCegarLoop]: Interpolant automaton has 41 states. [2019-09-10 07:34:33,647 INFO L276 IsEmpty]: Start isEmpty. Operand 5062 states and 6360 transitions. [2019-09-10 07:34:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-10 07:34:33,648 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:34:33,649 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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] [2019-09-10 07:34:33,649 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:34:33,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:34:33,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1745215252, now seen corresponding path program 1 times [2019-09-10 07:34:33,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:34:33,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:34:33,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:34:33,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:34:33,650 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:34:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:34:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:34:34,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:34:34,267 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:34:34,267 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 113 with the following transitions: [2019-09-10 07:34:34,267 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [128], [139], [142], [145], [147], [155], [158], [164], [167], [170], [172], [180], [183], [185], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:34:34,270 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:34:34,270 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:34:34,280 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:34:34,482 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:34:34,483 INFO L272 AbstractInterpreter]: Visited 64 different actions 715 times. Merged at 41 different actions 556 times. Widened at 13 different actions 91 times. Performed 2503 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2503 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 90 fixpoints after 18 different actions. Largest state had 90 variables. [2019-09-10 07:34:34,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:34:34,483 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:34:34,483 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:34:34,483 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:34:34,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:34:34,494 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:34:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:34:34,590 INFO L256 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 61 conjunts are in the unsatisfiable core [2019-09-10 07:34:34,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:34:35,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:35,292 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 37 [2019-09-10 07:34:35,551 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:35,723 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-09-10 07:34:35,912 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2019-09-10 07:34:36,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:36,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:36,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:34:38,181 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:34:40,434 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2019-09-10 07:34:40,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:40,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:40,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:40,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:40,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:40,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:40,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:34:40,627 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 8 [2019-09-10 07:34:41,580 WARN L188 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2019-09-10 07:34:42,013 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2019-09-10 07:34:45,388 WARN L188 SmtUtils]: Spent 2.78 s on a formula simplification that was a NOOP. DAG size: 100 [2019-09-10 07:34:45,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-10 07:34:45,834 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:34:45,837 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:34:45,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 29, 26] total 71 [2019-09-10 07:34:45,838 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:34:45,838 INFO L454 AbstractCegarLoop]: Interpolant automaton has 48 states [2019-09-10 07:34:45,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2019-09-10 07:34:45,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=4706, Unknown=0, NotChecked=0, Total=4970 [2019-09-10 07:34:45,839 INFO L87 Difference]: Start difference. First operand 5062 states and 6360 transitions. Second operand 48 states. [2019-09-10 07:34:46,093 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-09-10 07:34:47,519 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2019-09-10 07:34:47,849 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2019-09-10 07:34:48,222 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2019-09-10 07:34:48,552 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2019-09-10 07:34:48,931 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2019-09-10 07:34:49,224 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2019-09-10 07:34:49,532 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2019-09-10 07:34:49,946 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2019-09-10 07:34:50,516 WARN L188 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2019-09-10 07:34:51,002 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 86 [2019-09-10 07:34:51,482 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 93 [2019-09-10 07:34:51,964 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 90 [2019-09-10 07:34:52,506 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 87 [2019-09-10 07:34:53,001 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 90 [2019-09-10 07:34:53,647 WARN L188 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 91 [2019-09-10 07:34:54,170 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 89 [2019-09-10 07:34:56,842 WARN L188 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 93 [2019-09-10 07:34:57,349 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2019-09-10 07:34:58,210 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 91 [2019-09-10 07:34:58,700 WARN L188 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 94 [2019-09-10 07:35:00,130 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 96 [2019-09-10 07:35:01,001 WARN L188 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 98 [2019-09-10 07:35:02,250 WARN L188 SmtUtils]: Spent 882.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 100 [2019-09-10 07:35:04,021 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 84 [2019-09-10 07:35:04,992 WARN L188 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 92 [2019-09-10 07:35:05,839 WARN L188 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 94 [2019-09-10 07:35:06,294 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 85 [2019-09-10 07:35:06,731 WARN L188 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2019-09-10 07:35:07,462 WARN L188 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 90 [2019-09-10 07:35:07,894 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2019-09-10 07:35:08,528 WARN L188 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 92 [2019-09-10 07:35:09,275 WARN L188 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 92 [2019-09-10 07:35:09,893 WARN L188 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 94 [2019-09-10 07:35:10,259 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2019-09-10 07:35:10,652 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2019-09-10 07:35:12,160 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2019-09-10 07:35:12,562 WARN L188 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 85 [2019-09-10 07:35:13,132 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 93 [2019-09-10 07:35:13,751 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 94 [2019-09-10 07:35:14,416 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 96 [2019-09-10 07:35:14,922 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 86 [2019-09-10 07:35:15,911 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 101 [2019-09-10 07:35:16,323 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2019-09-10 07:35:17,037 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 103 [2019-09-10 07:35:19,945 WARN L188 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 107 [2019-09-10 07:35:20,292 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2019-09-10 07:35:20,678 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 89 [2019-09-10 07:35:21,053 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 81 [2019-09-10 07:35:21,824 WARN L188 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 109 [2019-09-10 07:35:22,324 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 89 [2019-09-10 07:35:23,225 WARN L188 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 110 [2019-09-10 07:35:23,606 WARN L188 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 83 [2019-09-10 07:35:23,944 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2019-09-10 07:35:24,442 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 91 [2019-09-10 07:35:25,320 WARN L188 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 112 [2019-09-10 07:35:25,919 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2019-09-10 07:35:26,716 WARN L188 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 108 [2019-09-10 07:35:27,070 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 80 [2019-09-10 07:35:27,703 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 94 [2019-09-10 07:35:30,473 WARN L188 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 173 DAG size of output: 110 [2019-09-10 07:35:31,076 WARN L188 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2019-09-10 07:35:31,794 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 91 [2019-09-10 07:35:32,337 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-10 07:35:32,526 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2019-09-10 07:35:33,160 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2019-09-10 07:35:33,495 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 71 [2019-09-10 07:35:33,717 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-10 07:35:34,677 WARN L188 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 99 [2019-09-10 07:35:35,100 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2019-09-10 07:35:35,882 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 82 [2019-09-10 07:35:36,414 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2019-09-10 07:35:36,694 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 69 [2019-09-10 07:35:37,452 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 96 [2019-09-10 07:35:38,087 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 79 [2019-09-10 07:35:39,179 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 92 [2019-09-10 07:35:40,341 WARN L188 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 109 [2019-09-10 07:35:41,286 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 98 [2019-09-10 07:35:41,729 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2019-09-10 07:35:46,198 WARN L188 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 110 [2019-09-10 07:35:46,847 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 97 [2019-09-10 07:35:47,589 WARN L188 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 97 [2019-09-10 07:35:48,583 WARN L188 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 107 [2019-09-10 07:35:48,810 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-10 07:35:49,418 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 87 [2019-09-10 07:35:50,611 WARN L188 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 116 [2019-09-10 07:35:51,271 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 97 [2019-09-10 07:35:52,048 WARN L188 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 94 [2019-09-10 07:35:53,251 WARN L188 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 117 [2019-09-10 07:35:54,060 WARN L188 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 94 [2019-09-10 07:35:56,406 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 90 [2019-09-10 07:35:57,093 WARN L188 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 98 [2019-09-10 07:36:00,056 WARN L188 SmtUtils]: Spent 441.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 112 [2019-09-10 07:36:03,527 WARN L188 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 118 [2019-09-10 07:36:05,357 WARN L188 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 151 DAG size of output: 106 [2019-09-10 07:36:05,993 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 90 [2019-09-10 07:36:06,925 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 95 [2019-09-10 07:36:10,680 WARN L188 SmtUtils]: Spent 2.58 s on a formula simplification. DAG size of input: 194 DAG size of output: 126 [2019-09-10 07:36:11,718 WARN L188 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 115 [2019-09-10 07:36:12,683 WARN L188 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 93 [2019-09-10 07:36:13,370 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 83 [2019-09-10 07:36:14,224 WARN L188 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 106 [2019-09-10 07:36:17,126 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 98 [2019-09-10 07:36:17,490 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2019-09-10 07:36:20,598 WARN L188 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 120 [2019-09-10 07:36:21,306 WARN L188 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 104 [2019-09-10 07:36:22,199 WARN L188 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 95 [2019-09-10 07:36:22,976 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2019-09-10 07:36:24,120 WARN L188 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 102 [2019-09-10 07:36:27,822 WARN L188 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 102 [2019-09-10 07:36:28,740 WARN L188 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 93 [2019-09-10 07:36:30,162 WARN L188 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 116 [2019-09-10 07:36:32,233 WARN L188 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 106 [2019-09-10 07:36:35,387 WARN L188 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 115 [2019-09-10 07:36:36,299 WARN L188 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 106 [2019-09-10 07:36:38,438 WARN L188 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 107 [2019-09-10 07:36:39,401 WARN L188 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 114 [2019-09-10 07:36:41,041 WARN L188 SmtUtils]: Spent 634.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 123 [2019-09-10 07:36:41,927 WARN L188 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 107 [2019-09-10 07:36:42,507 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2019-09-10 07:36:42,899 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2019-09-10 07:36:43,568 WARN L188 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 104 [2019-09-10 07:36:46,744 WARN L188 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 105 [2019-09-10 07:36:47,327 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 105 [2019-09-10 07:36:47,556 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2019-09-10 07:36:55,499 WARN L188 SmtUtils]: Spent 4.59 s on a formula simplification. DAG size of input: 187 DAG size of output: 121 [2019-09-10 07:36:56,248 WARN L188 SmtUtils]: Spent 524.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 105 [2019-09-10 07:36:57,347 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 100 [2019-09-10 07:36:57,905 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2019-09-10 07:36:59,271 WARN L188 SmtUtils]: Spent 742.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 119 [2019-09-10 07:37:00,290 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2019-09-10 07:37:01,645 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 103 [2019-09-10 07:37:02,398 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 95 [2019-09-10 07:37:03,376 WARN L188 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 120 [2019-09-10 07:37:04,546 WARN L188 SmtUtils]: Spent 903.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 103 [2019-09-10 07:37:05,102 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2019-09-10 07:37:05,409 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2019-09-10 07:37:06,214 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 111 [2019-09-10 07:37:06,709 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 97 [2019-09-10 07:37:07,989 WARN L188 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 105 [2019-09-10 07:37:08,544 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-10 07:37:09,216 WARN L188 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 105 [2019-09-10 07:37:10,079 WARN L188 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 107 [2019-09-10 07:37:10,672 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2019-09-10 07:37:13,997 WARN L188 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 182 DAG size of output: 126 [2019-09-10 07:37:14,693 WARN L188 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 107 [2019-09-10 07:37:15,515 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 105 [2019-09-10 07:37:15,826 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-09-10 07:37:16,620 WARN L188 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 111 [2019-09-10 07:37:17,288 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 103 [2019-09-10 07:37:18,001 WARN L188 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 109 [2019-09-10 07:37:18,653 WARN L188 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 105 [2019-09-10 07:37:19,405 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2019-09-10 07:37:20,170 WARN L188 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 98 [2019-09-10 07:37:20,760 WARN L188 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 94 [2019-09-10 07:37:21,308 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2019-09-10 07:37:21,894 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2019-09-10 07:37:23,699 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 95 [2019-09-10 07:37:24,223 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 92 [2019-09-10 07:37:24,870 WARN L188 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 108 [2019-09-10 07:37:25,466 WARN L188 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 98 [2019-09-10 07:37:26,234 WARN L188 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 109 [2019-09-10 07:37:26,761 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 97 [2019-09-10 07:37:27,626 WARN L188 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 106 [2019-09-10 07:37:28,527 WARN L188 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 115 [2019-09-10 07:37:29,115 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 97 [2019-09-10 07:37:30,130 WARN L188 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 116 [2019-09-10 07:37:30,770 WARN L188 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2019-09-10 07:37:31,688 WARN L188 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 117 [2019-09-10 07:37:34,220 WARN L188 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2019-09-10 07:37:35,186 WARN L188 SmtUtils]: Spent 582.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 113 [2019-09-10 07:37:35,572 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-10 07:37:36,617 WARN L188 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 101 [2019-09-10 07:37:36,997 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-09-10 07:37:37,865 WARN L188 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 104 [2019-09-10 07:37:38,761 WARN L188 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 99 [2019-09-10 07:37:39,724 WARN L188 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 108 [2019-09-10 07:37:40,725 WARN L188 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 109 [2019-09-10 07:37:41,705 WARN L188 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 103 [2019-09-10 07:37:42,577 WARN L188 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 105 [2019-09-10 07:37:44,116 WARN L188 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 104 [2019-09-10 07:37:47,062 WARN L188 SmtUtils]: Spent 2.50 s on a formula simplification. DAG size of input: 157 DAG size of output: 107 [2019-09-10 07:37:47,948 WARN L188 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 106 [2019-09-10 07:37:49,201 WARN L188 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 102 [2019-09-10 07:37:50,035 WARN L188 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 104 [2019-09-10 07:37:50,801 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 100 [2019-09-10 07:37:51,503 WARN L188 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 102 [2019-09-10 07:37:52,035 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 92 [2019-09-10 07:37:52,655 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 94 [2019-09-10 07:37:53,475 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 102 [2019-09-10 07:37:53,722 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2019-09-10 07:37:54,307 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 104 [2019-09-10 07:37:54,538 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2019-09-10 07:37:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:37:57,986 INFO L93 Difference]: Finished difference Result 11080 states and 13754 transitions. [2019-09-10 07:37:57,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2019-09-10 07:37:57,987 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 112 [2019-09-10 07:37:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:37:57,996 INFO L225 Difference]: With dead ends: 11080 [2019-09-10 07:37:57,996 INFO L226 Difference]: Without dead ends: 11080 [2019-09-10 07:37:58,000 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 171 SyntacticMatches, 4 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35433 ImplicationChecksByTransitivity, 161.3s TimeCoverageRelationStatistics Valid=14973, Invalid=88381, Unknown=8, NotChecked=0, Total=103362 [2019-09-10 07:37:58,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11080 states. [2019-09-10 07:37:58,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11080 to 6872. [2019-09-10 07:37:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6872 states. [2019-09-10 07:37:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6872 states to 6872 states and 8640 transitions. [2019-09-10 07:37:58,052 INFO L78 Accepts]: Start accepts. Automaton has 6872 states and 8640 transitions. Word has length 112 [2019-09-10 07:37:58,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:37:58,053 INFO L475 AbstractCegarLoop]: Abstraction has 6872 states and 8640 transitions. [2019-09-10 07:37:58,053 INFO L476 AbstractCegarLoop]: Interpolant automaton has 48 states. [2019-09-10 07:37:58,053 INFO L276 IsEmpty]: Start isEmpty. Operand 6872 states and 8640 transitions. [2019-09-10 07:37:58,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-10 07:37:58,054 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:37:58,054 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 07:37:58,054 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:37:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:58,054 INFO L82 PathProgramCache]: Analyzing trace with hash 647242398, now seen corresponding path program 1 times [2019-09-10 07:37:58,055 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:37:58,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:58,056 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:58,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:58,056 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 69 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-10 07:37:58,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:58,162 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:37:58,162 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2019-09-10 07:37:58,163 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [77], [79], [81], [84], [87], [90], [92], [94], [97], [100], [104], [106], [109], [110], [112], [114], [119], [121], [124], [139], [142], [145], [147], [155], [160], [164], [167], [170], [172], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:37:58,164 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:37:58,164 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:37:58,173 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:37:58,376 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:37:58,376 INFO L272 AbstractInterpreter]: Visited 64 different actions 567 times. Merged at 41 different actions 418 times. Widened at 16 different actions 72 times. Performed 2040 root evaluator evaluations with a maximum evaluation depth of 5. Performed 2040 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 69 fixpoints after 20 different actions. Largest state had 90 variables. [2019-09-10 07:37:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:58,377 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:37:58,377 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:58,377 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-10 07:37:58,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:58,400 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:37:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:58,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-10 07:37:58,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:37:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 11 proven. 69 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-10 07:37:58,565 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:37:58,668 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:37:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 71 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-10 07:37:58,742 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:37:58,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 9] total 17 [2019-09-10 07:37:58,742 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:37:58,743 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-10 07:37:58,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-10 07:37:58,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2019-09-10 07:37:58,743 INFO L87 Difference]: Start difference. First operand 6872 states and 8640 transitions. Second operand 10 states. [2019-09-10 07:37:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 07:37:58,922 INFO L93 Difference]: Finished difference Result 10813 states and 12840 transitions. [2019-09-10 07:37:58,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-10 07:37:58,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2019-09-10 07:37:58,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 07:37:58,929 INFO L225 Difference]: With dead ends: 10813 [2019-09-10 07:37:58,929 INFO L226 Difference]: Without dead ends: 10813 [2019-09-10 07:37:58,930 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2019-09-10 07:37:58,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10813 states. [2019-09-10 07:37:58,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10813 to 9745. [2019-09-10 07:37:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9745 states. [2019-09-10 07:37:58,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9745 states to 9745 states and 11683 transitions. [2019-09-10 07:37:58,991 INFO L78 Accepts]: Start accepts. Automaton has 9745 states and 11683 transitions. Word has length 113 [2019-09-10 07:37:58,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 07:37:58,991 INFO L475 AbstractCegarLoop]: Abstraction has 9745 states and 11683 transitions. [2019-09-10 07:37:58,991 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-10 07:37:58,991 INFO L276 IsEmpty]: Start isEmpty. Operand 9745 states and 11683 transitions. [2019-09-10 07:37:58,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-10 07:37:58,992 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 07:37:58,992 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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] [2019-09-10 07:37:58,993 INFO L418 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 07:37:58,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:58,993 INFO L82 PathProgramCache]: Analyzing trace with hash 522986089, now seen corresponding path program 1 times [2019-09-10 07:37:58,993 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 07:37:58,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:58,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:58,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 07:37:58,994 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 07:37:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:59,615 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 19 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:37:59,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:59,616 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 07:37:59,616 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2019-09-10 07:37:59,616 INFO L207 CegarAbsIntRunner]: [0], [3], [6], [9], [12], [15], [18], [21], [24], [27], [30], [33], [36], [39], [42], [45], [48], [51], [55], [58], [61], [64], [66], [68], [71], [74], [79], [81], [84], [87], [90], [92], [94], [97], [104], [106], [109], [110], [112], [121], [124], [126], [130], [135], [139], [142], [145], [147], [155], [158], [160], [164], [167], [170], [172], [189], [192], [195], [197], [224], [225], [229], [230], [231] [2019-09-10 07:37:59,620 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 07:37:59,620 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 07:37:59,628 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-10 07:37:59,777 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 07:37:59,777 INFO L272 AbstractInterpreter]: Visited 64 different actions 527 times. Merged at 41 different actions 390 times. Widened at 13 different actions 59 times. Performed 1837 root evaluator evaluations with a maximum evaluation depth of 5. Performed 1837 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 69 fixpoints after 18 different actions. Largest state had 90 variables. [2019-09-10 07:37:59,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 07:37:59,778 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 07:37:59,778 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 07:37:59,778 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-10 07:37:59,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 07:37:59,788 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 07:37:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 07:37:59,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-10 07:37:59,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 07:37:59,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 36 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:38:00,394 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 07:38:00,431 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,686 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 07:38:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 47 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 07:38:00,798 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 07:38:00,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 11] total 34 [2019-09-10 07:38:00,798 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 07:38:00,798 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-10 07:38:00,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-10 07:38:00,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2019-09-10 07:38:00,799 INFO L87 Difference]: Start difference. First operand 9745 states and 11683 transitions. Second operand 28 states. [2019-09-10 07:38:02,434 WARN L188 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-10 07:38:03,988 WARN L188 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2019-09-10 07:38:04,530 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2019-09-10 07:38:05,889 WARN L188 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-10 07:38:06,390 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-10 07:38:07,556 WARN L188 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 40 [2019-09-10 07:38:11,930 WARN L188 SmtUtils]: Spent 4.18 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2019-09-10 07:38:13,421 WARN L188 SmtUtils]: Spent 996.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-09-10 07:38:13,562 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2019-09-10 07:38:17,610 WARN L188 SmtUtils]: Spent 3.26 s on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-10 07:38:19,017 WARN L188 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-10 07:38:19,204 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2019-09-10 07:38:22,128 WARN L188 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-10 07:38:23,652 WARN L188 SmtUtils]: Spent 1.46 s on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2019-09-10 07:38:23,970 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-10 07:38:26,213 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 07:38:27,807 WARN L188 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-10 07:38:28,093 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-10 07:38:28,255 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-10 07:38:30,348 WARN L188 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 35 DAG size of output: 32