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/Problem11_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:04:02,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:04:02,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:04:02,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:04:02,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:04:02,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:04:02,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:04:02,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:04:02,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:04:02,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:04:02,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:04:02,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:04:02,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:04:02,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:04:02,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:04:02,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:04:02,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:04:02,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:04:02,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:04:02,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:04:02,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:04:02,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:04:02,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:04:02,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:04:02,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 00:04:02,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:04:02,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:04:02,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:04:02,457 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 00:04:02,491 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:04:02,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:04:02,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:04:02,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:04:02,493 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:04:02,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:04:02,493 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:04:02,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:04:02,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:04:02,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:04:02,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:04:02,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:04:02,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:04:02,496 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:04:02,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:04:02,496 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:04:02,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:04:02,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:04:02,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:04:02,497 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:04:02,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:04:02,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:04:02,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:04:02,498 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:04:02,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:04:02,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:04:02,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:04:02,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:04:02,499 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 00:04:02,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:04:02,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:04:02,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:04:02,850 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:04:02,850 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:04:02,851 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label50.c [2019-10-15 00:04:02,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2ddbba90/97346cf6ffe34f2f9d0a3c6fd8378dd1/FLAG36d8893d9 [2019-10-15 00:04:03,525 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:04:03,526 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label50.c [2019-10-15 00:04:03,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2ddbba90/97346cf6ffe34f2f9d0a3c6fd8378dd1/FLAG36d8893d9 [2019-10-15 00:04:03,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2ddbba90/97346cf6ffe34f2f9d0a3c6fd8378dd1 [2019-10-15 00:04:03,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:04:03,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:04:03,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:04:03,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:04:03,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:04:03,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:03" (1/1) ... [2019-10-15 00:04:03,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59674e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:03, skipping insertion in model container [2019-10-15 00:04:03,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:04:03" (1/1) ... [2019-10-15 00:04:03,782 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:04:03,843 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:04:04,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:04:04,596 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:04:04,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:04:04,859 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:04:04,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:04 WrapperNode [2019-10-15 00:04:04,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:04:04,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:04:04,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:04:04,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:04:04,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:04" (1/1) ... [2019-10-15 00:04:04,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:04" (1/1) ... [2019-10-15 00:04:04,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:04" (1/1) ... [2019-10-15 00:04:04,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:04" (1/1) ... [2019-10-15 00:04:04,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:04" (1/1) ... [2019-10-15 00:04:05,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:04" (1/1) ... [2019-10-15 00:04:05,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:04" (1/1) ... [2019-10-15 00:04:05,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:04:05,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:04:05,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:04:05,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:04:05,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:04" (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 00:04:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:04:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:04:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 00:04:05,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:04:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 00:04:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:04:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:04:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 00:04:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:04:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:04:05,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:04:07,089 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:04:07,090 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:04:07,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:07 BoogieIcfgContainer [2019-10-15 00:04:07,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:04:07,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:04:07,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:04:07,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:04:07,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:04:03" (1/3) ... [2019-10-15 00:04:07,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321a0044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:07, skipping insertion in model container [2019-10-15 00:04:07,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:04:04" (2/3) ... [2019-10-15 00:04:07,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@321a0044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:04:07, skipping insertion in model container [2019-10-15 00:04:07,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:04:07" (3/3) ... [2019-10-15 00:04:07,102 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label50.c [2019-10-15 00:04:07,113 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:04:07,123 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:04:07,135 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:04:07,165 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:04:07,165 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:04:07,165 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:04:07,166 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:04:07,166 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:04:07,166 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:04:07,166 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:04:07,166 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:04:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-15 00:04:07,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 00:04:07,200 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:07,202 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] [2019-10-15 00:04:07,204 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:07,210 INFO L82 PathProgramCache]: Analyzing trace with hash -172206893, now seen corresponding path program 1 times [2019-10-15 00:04:07,220 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:07,220 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119506984] [2019-10-15 00:04:07,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:07,221 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:07,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:07,610 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 00:04:07,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119506984] [2019-10-15 00:04:07,612 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:07,613 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:04:07,613 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408237790] [2019-10-15 00:04:07,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:04:07,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:07,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:04:07,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:04:07,639 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2019-10-15 00:04:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:09,918 INFO L93 Difference]: Finished difference Result 997 states and 1776 transitions. [2019-10-15 00:04:09,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:04:09,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2019-10-15 00:04:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:09,942 INFO L225 Difference]: With dead ends: 997 [2019-10-15 00:04:09,942 INFO L226 Difference]: Without dead ends: 623 [2019-10-15 00:04:09,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:04:09,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-10-15 00:04:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 620. [2019-10-15 00:04:10,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2019-10-15 00:04:10,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 896 transitions. [2019-10-15 00:04:10,055 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 896 transitions. Word has length 42 [2019-10-15 00:04:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:10,055 INFO L462 AbstractCegarLoop]: Abstraction has 620 states and 896 transitions. [2019-10-15 00:04:10,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:04:10,056 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 896 transitions. [2019-10-15 00:04:10,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-15 00:04:10,062 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:10,062 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:10,063 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:10,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:10,063 INFO L82 PathProgramCache]: Analyzing trace with hash -258983758, now seen corresponding path program 1 times [2019-10-15 00:04:10,063 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:10,064 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735060555] [2019-10-15 00:04:10,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:10,064 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:10,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:10,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:10,324 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735060555] [2019-10-15 00:04:10,324 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:10,324 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:04:10,324 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911620030] [2019-10-15 00:04:10,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:04:10,332 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:10,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:04:10,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:04:10,333 INFO L87 Difference]: Start difference. First operand 620 states and 896 transitions. Second operand 6 states. [2019-10-15 00:04:12,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:12,014 INFO L93 Difference]: Finished difference Result 1833 states and 2715 transitions. [2019-10-15 00:04:12,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:04:12,016 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2019-10-15 00:04:12,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:12,025 INFO L225 Difference]: With dead ends: 1833 [2019-10-15 00:04:12,026 INFO L226 Difference]: Without dead ends: 1219 [2019-10-15 00:04:12,029 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 00:04:12,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2019-10-15 00:04:12,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1200. [2019-10-15 00:04:12,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1200 states. [2019-10-15 00:04:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1735 transitions. [2019-10-15 00:04:12,113 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1735 transitions. Word has length 114 [2019-10-15 00:04:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:12,114 INFO L462 AbstractCegarLoop]: Abstraction has 1200 states and 1735 transitions. [2019-10-15 00:04:12,114 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:04:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1735 transitions. [2019-10-15 00:04:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 00:04:12,117 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:12,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:12,118 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:12,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:12,118 INFO L82 PathProgramCache]: Analyzing trace with hash -590798395, now seen corresponding path program 1 times [2019-10-15 00:04:12,119 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:12,119 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135897442] [2019-10-15 00:04:12,119 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:12,119 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:12,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:12,277 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:12,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135897442] [2019-10-15 00:04:12,278 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:12,278 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 00:04:12,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576320583] [2019-10-15 00:04:12,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:04:12,281 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:12,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:04:12,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:04:12,282 INFO L87 Difference]: Start difference. First operand 1200 states and 1735 transitions. Second operand 4 states. [2019-10-15 00:04:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:14,278 INFO L93 Difference]: Finished difference Result 3552 states and 5208 transitions. [2019-10-15 00:04:14,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:04:14,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2019-10-15 00:04:14,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:14,294 INFO L225 Difference]: With dead ends: 3552 [2019-10-15 00:04:14,294 INFO L226 Difference]: Without dead ends: 2358 [2019-10-15 00:04:14,298 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 00:04:14,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2019-10-15 00:04:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2153. [2019-10-15 00:04:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2153 states. [2019-10-15 00:04:14,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 3070 transitions. [2019-10-15 00:04:14,371 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 3070 transitions. Word has length 115 [2019-10-15 00:04:14,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:14,372 INFO L462 AbstractCegarLoop]: Abstraction has 2153 states and 3070 transitions. [2019-10-15 00:04:14,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:04:14,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 3070 transitions. [2019-10-15 00:04:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-15 00:04:14,378 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:14,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:04:14,379 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:14,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:14,379 INFO L82 PathProgramCache]: Analyzing trace with hash 865187038, now seen corresponding path program 1 times [2019-10-15 00:04:14,380 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:14,380 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237769955] [2019-10-15 00:04:14,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:14,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:14,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:14,670 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:14,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237769955] [2019-10-15 00:04:14,670 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:04:14,671 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:04:14,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752864246] [2019-10-15 00:04:14,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:04:14,672 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:04:14,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:04:14,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:04:14,673 INFO L87 Difference]: Start difference. First operand 2153 states and 3070 transitions. Second operand 6 states. [2019-10-15 00:04:17,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:04:17,368 INFO L93 Difference]: Finished difference Result 8027 states and 14009 transitions. [2019-10-15 00:04:17,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 00:04:17,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-10-15 00:04:17,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:04:17,434 INFO L225 Difference]: With dead ends: 8027 [2019-10-15 00:04:17,435 INFO L226 Difference]: Without dead ends: 5880 [2019-10-15 00:04:17,450 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-10-15 00:04:17,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5880 states. [2019-10-15 00:04:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5880 to 5142. [2019-10-15 00:04:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5142 states. [2019-10-15 00:04:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5142 states to 5142 states and 7403 transitions. [2019-10-15 00:04:17,761 INFO L78 Accepts]: Start accepts. Automaton has 5142 states and 7403 transitions. Word has length 140 [2019-10-15 00:04:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:04:17,763 INFO L462 AbstractCegarLoop]: Abstraction has 5142 states and 7403 transitions. [2019-10-15 00:04:17,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:04:17,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5142 states and 7403 transitions. [2019-10-15 00:04:17,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-15 00:04:17,769 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:04:17,769 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 00:04:17,769 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:04:17,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:04:17,770 INFO L82 PathProgramCache]: Analyzing trace with hash 141894414, now seen corresponding path program 1 times [2019-10-15 00:04:17,770 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:04:17,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539049429] [2019-10-15 00:04:17,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:17,771 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:04:17,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:04:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:17,956 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:17,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539049429] [2019-10-15 00:04:17,957 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59004512] [2019-10-15 00:04:17,957 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 00:04:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:04:18,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 00:04:18,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:04:18,114 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:18,114 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:04:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:04:18,280 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [356077853] [2019-10-15 00:04:18,306 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 188 [2019-10-15 00:04:18,374 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 00:04:18,374 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)