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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:10:35,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:10:35,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:10:35,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-15 00:10:35,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:10:35,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:10:35,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:10:35,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:10:35,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:10:35,944 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:10:35,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:10:35,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:10:35,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:10:35,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:10:35,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:10:35,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:10:35,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 00:10:35,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:10:35,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:10:35,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:10:35,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 00:10:35,999 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:10:35,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:10:36,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:10:36,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:10:36,001 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:10:36,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:10:36,001 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:10:36,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:10:36,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:10:36,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:10:36,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:10:36,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:10:36,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:10:36,003 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:10:36,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:10:36,003 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:10:36,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:10:36,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:10:36,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:10:36,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:10:36,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:10:36,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:10:36,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:10:36,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:10:36,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:10:36,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:10:36,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:10:36,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:10:36,006 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 00:10:36,298 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:10:36,310 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:10:36,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:10:36,316 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:10:36,316 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:10:36,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label48.c [2019-10-15 00:10:36,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fbd622ec/baf94013b4114334a78eb1400acec1c8/FLAGe46addda5 [2019-10-15 00:10:37,053 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:10:37,054 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label48.c [2019-10-15 00:10:37,081 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fbd622ec/baf94013b4114334a78eb1400acec1c8/FLAGe46addda5 [2019-10-15 00:10:37,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fbd622ec/baf94013b4114334a78eb1400acec1c8 [2019-10-15 00:10:37,213 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:10:37,214 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:10:37,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:10:37,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:10:37,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:10:37,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:10:37" (1/1) ... [2019-10-15 00:10:37,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4924bc61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:37, skipping insertion in model container [2019-10-15 00:10:37,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:10:37" (1/1) ... [2019-10-15 00:10:37,233 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:10:37,363 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:10:38,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:10:38,754 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:10:39,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:10:39,286 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:10:39,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:39 WrapperNode [2019-10-15 00:10:39,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:10:39,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:10:39,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:10:39,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:10:39,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:39" (1/1) ... [2019-10-15 00:10:39,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:39" (1/1) ... [2019-10-15 00:10:39,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:39" (1/1) ... [2019-10-15 00:10:39,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:39" (1/1) ... [2019-10-15 00:10:39,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:39" (1/1) ... [2019-10-15 00:10:39,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:39" (1/1) ... [2019-10-15 00:10:39,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:39" (1/1) ... [2019-10-15 00:10:39,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:10:39,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:10:39,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:10:39,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:10:39,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:39" (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 [2019-10-15 00:10:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:10:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:10:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:10:39,594 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 00:10:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 00:10:39,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:10:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:10:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 00:10:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 00:10:39,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:10:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:10:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:10:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:10:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:10:39,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:10:43,320 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:10:43,323 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:10:43,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:10:43 BoogieIcfgContainer [2019-10-15 00:10:43,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:10:43,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:10:43,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:10:43,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:10:43,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:10:37" (1/3) ... [2019-10-15 00:10:43,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441c99b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:10:43, skipping insertion in model container [2019-10-15 00:10:43,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:10:39" (2/3) ... [2019-10-15 00:10:43,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441c99b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:10:43, skipping insertion in model container [2019-10-15 00:10:43,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:10:43" (3/3) ... [2019-10-15 00:10:43,344 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label48.c [2019-10-15 00:10:43,357 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:10:43,375 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:10:43,389 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:10:43,437 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:10:43,437 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:10:43,437 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:10:43,438 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:10:43,438 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:10:43,438 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:10:43,438 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:10:43,438 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:10:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-10-15 00:10:43,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-15 00:10:43,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:10:43,493 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:10:43,495 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:10:43,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:10:43,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1448610927, now seen corresponding path program 1 times [2019-10-15 00:10:43,509 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:10:43,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034601952] [2019-10-15 00:10:43,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:10:43,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:10:43,510 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:10:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:10:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:10:43,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034601952] [2019-10-15 00:10:43,957 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:10:43,957 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:10:43,958 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27817474] [2019-10-15 00:10:43,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:10:43,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:10:43,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:10:43,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:10:43,987 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-10-15 00:10:48,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:10:48,661 INFO L93 Difference]: Finished difference Result 2248 states and 4319 transitions. [2019-10-15 00:10:48,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:10:48,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-10-15 00:10:48,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:10:48,695 INFO L225 Difference]: With dead ends: 2248 [2019-10-15 00:10:48,695 INFO L226 Difference]: Without dead ends: 1412 [2019-10-15 00:10:48,705 INFO L600 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 [2019-10-15 00:10:48,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-10-15 00:10:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-10-15 00:10:48,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-10-15 00:10:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2630 transitions. [2019-10-15 00:10:48,868 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2630 transitions. Word has length 60 [2019-10-15 00:10:48,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:10:48,868 INFO L462 AbstractCegarLoop]: Abstraction has 1412 states and 2630 transitions. [2019-10-15 00:10:48,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:10:48,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2630 transitions. [2019-10-15 00:10:48,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 00:10:48,875 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:10:48,875 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:10:48,876 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:10:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:10:48,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1160293157, now seen corresponding path program 1 times [2019-10-15 00:10:48,877 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:10:48,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108300201] [2019-10-15 00:10:48,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:10:48,877 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:10:48,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:10:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:10:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:10:49,224 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108300201] [2019-10-15 00:10:49,224 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:10:49,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:10:49,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345707823] [2019-10-15 00:10:49,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:10:49,228 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:10:49,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:10:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:10:49,229 INFO L87 Difference]: Start difference. First operand 1412 states and 2630 transitions. Second operand 6 states. [2019-10-15 00:10:55,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:10:55,231 INFO L93 Difference]: Finished difference Result 4288 states and 8023 transitions. [2019-10-15 00:10:55,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:10:55,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2019-10-15 00:10:55,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:10:55,255 INFO L225 Difference]: With dead ends: 4288 [2019-10-15 00:10:55,255 INFO L226 Difference]: Without dead ends: 2882 [2019-10-15 00:10:55,260 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 00:10:55,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2019-10-15 00:10:55,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2858. [2019-10-15 00:10:55,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2858 states. [2019-10-15 00:10:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 5137 transitions. [2019-10-15 00:10:55,365 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 5137 transitions. Word has length 149 [2019-10-15 00:10:55,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:10:55,368 INFO L462 AbstractCegarLoop]: Abstraction has 2858 states and 5137 transitions. [2019-10-15 00:10:55,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:10:55,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 5137 transitions. [2019-10-15 00:10:55,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 00:10:55,382 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:10:55,382 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:10:55,383 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:10:55,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:10:55,383 INFO L82 PathProgramCache]: Analyzing trace with hash 610889412, now seen corresponding path program 1 times [2019-10-15 00:10:55,383 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:10:55,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504240328] [2019-10-15 00:10:55,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:10:55,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:10:55,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:10:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:10:55,619 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:10:55,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504240328] [2019-10-15 00:10:55,620 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:10:55,620 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:10:55,621 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278171472] [2019-10-15 00:10:55,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:10:55,622 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:10:55,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:10:55,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:10:55,622 INFO L87 Difference]: Start difference. First operand 2858 states and 5137 transitions. Second operand 6 states. [2019-10-15 00:11:05,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:05,025 INFO L93 Difference]: Finished difference Result 11626 states and 21824 transitions. [2019-10-15 00:11:05,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 00:11:05,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2019-10-15 00:11:05,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:05,084 INFO L225 Difference]: With dead ends: 11626 [2019-10-15 00:11:05,085 INFO L226 Difference]: Without dead ends: 8774 [2019-10-15 00:11:05,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-15 00:11:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8774 states. [2019-10-15 00:11:05,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8774 to 8718. [2019-10-15 00:11:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8718 states. [2019-10-15 00:11:05,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8718 states to 8718 states and 13631 transitions. [2019-10-15 00:11:05,382 INFO L78 Accepts]: Start accepts. Automaton has 8718 states and 13631 transitions. Word has length 150 [2019-10-15 00:11:05,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:05,383 INFO L462 AbstractCegarLoop]: Abstraction has 8718 states and 13631 transitions. [2019-10-15 00:11:05,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:11:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 8718 states and 13631 transitions. [2019-10-15 00:11:05,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-15 00:11:05,392 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:05,392 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-15 00:11:05,392 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:05,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:05,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1350391872, now seen corresponding path program 1 times [2019-10-15 00:11:05,393 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:05,393 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164476457] [2019-10-15 00:11:05,393 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:05,394 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:05,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 106 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 00:11:05,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164476457] [2019-10-15 00:11:05,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221593802] [2019-10-15 00:11:05,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:11:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:05,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 00:11:05,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:11:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-15 00:11:05,864 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:11:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 106 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 00:11:06,068 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 00:11:06,069 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2019-10-15 00:11:06,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991309001] [2019-10-15 00:11:06,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 00:11:06,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:11:06,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 00:11:06,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-10-15 00:11:06,072 INFO L87 Difference]: Start difference. First operand 8718 states and 13631 transitions. Second operand 5 states. [2019-10-15 00:11:11,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:11:11,398 INFO L93 Difference]: Finished difference Result 24212 states and 39080 transitions. [2019-10-15 00:11:11,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:11:11,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2019-10-15 00:11:11,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:11:11,494 INFO L225 Difference]: With dead ends: 24212 [2019-10-15 00:11:11,494 INFO L226 Difference]: Without dead ends: 15500 [2019-10-15 00:11:11,525 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 433 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-10-15 00:11:11,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15500 states. [2019-10-15 00:11:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15500 to 13923. [2019-10-15 00:11:11,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13923 states. [2019-10-15 00:11:11,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13923 states to 13923 states and 18603 transitions. [2019-10-15 00:11:11,940 INFO L78 Accepts]: Start accepts. Automaton has 13923 states and 18603 transitions. Word has length 219 [2019-10-15 00:11:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:11:11,941 INFO L462 AbstractCegarLoop]: Abstraction has 13923 states and 18603 transitions. [2019-10-15 00:11:11,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 00:11:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 13923 states and 18603 transitions. [2019-10-15 00:11:11,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2019-10-15 00:11:11,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:11:11,951 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:11:12,157 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:11:12,161 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:11:12,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:11:12,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1101562771, now seen corresponding path program 1 times [2019-10-15 00:11:12,163 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:11:12,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265263828] [2019-10-15 00:11:12,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:12,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:11:12,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:11:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 230 proven. 69 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-15 00:11:12,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265263828] [2019-10-15 00:11:12,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464612099] [2019-10-15 00:11:12,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:11:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:11:12,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 00:11:12,652 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:11:12,796 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2019-10-15 00:11:12,796 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:11:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 230 proven. 69 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-15 00:11:12,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1036074612] [2019-10-15 00:11:12,968 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 342 [2019-10-15 00:11:13,015 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 00:11:13,016 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)