/usr/bin/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/Problem02_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:35:51,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:35:51,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:35:51,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:35:51,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:35:51,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:35:51,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:35:51,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:35:51,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:35:51,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:35:51,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:35:51,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:35:51,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:35:51,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:35:51,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:35:51,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:35:51,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:35:51,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:35:51,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:35:51,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:35:51,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:35:51,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:35:51,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:35:51,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:35:51,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:35:51,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:35:51,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:35:51,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:35:51,666 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 [2019-11-06 22:35:51,698 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:35:51,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:35:51,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:35:51,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:35:51,704 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:35:51,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:35:51,705 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:35:51,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:35:51,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:35:51,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:35:51,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:35:51,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:35:51,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:35:51,706 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:35:51,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:35:51,706 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:35:51,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:35:51,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:35:51,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:35:51,707 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:35:51,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:35:51,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:35:51,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:35:51,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:35:51,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:35:51,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:35:51,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:35:51,709 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:35:51,709 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 [2019-11-06 22:35:52,020 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:35:52,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:35:52,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:35:52,048 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:35:52,049 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:35:52,049 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2019-11-06 22:35:52,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b2ab466/616747802cd740c0b7e40f07eb9bcad3/FLAG9049bb0e4 [2019-11-06 22:35:52,670 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:35:52,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label42.c [2019-11-06 22:35:52,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b2ab466/616747802cd740c0b7e40f07eb9bcad3/FLAG9049bb0e4 [2019-11-06 22:35:52,919 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05b2ab466/616747802cd740c0b7e40f07eb9bcad3 [2019-11-06 22:35:52,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:35:52,930 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:35:52,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:35:52,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:35:52,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:35:52,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:35:52" (1/1) ... [2019-11-06 22:35:52,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe26cf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:52, skipping insertion in model container [2019-11-06 22:35:52,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:35:52" (1/1) ... [2019-11-06 22:35:52,947 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:35:52,998 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:35:53,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:35:53,480 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:35:53,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:35:53,596 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:35:53,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:53 WrapperNode [2019-11-06 22:35:53,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:35:53,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:35:53,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:35:53,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:35:53,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:53" (1/1) ... [2019-11-06 22:35:53,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:53" (1/1) ... [2019-11-06 22:35:53,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:53" (1/1) ... [2019-11-06 22:35:53,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:53" (1/1) ... [2019-11-06 22:35:53,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:53" (1/1) ... [2019-11-06 22:35:53,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:53" (1/1) ... [2019-11-06 22:35:53,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:53" (1/1) ... [2019-11-06 22:35:53,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:35:53,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:35:53,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:35:53,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:35:53,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:53" (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 [2019-11-06 22:35:53,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:35:53,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:35:53,758 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:35:53,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:35:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:35:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:35:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:35:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:35:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:35:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:35:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:35:55,082 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:35:55,082 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:35:55,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:35:55 BoogieIcfgContainer [2019-11-06 22:35:55,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:35:55,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:35:55,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:35:55,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:35:55,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:35:52" (1/3) ... [2019-11-06 22:35:55,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0bea8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:35:55, skipping insertion in model container [2019-11-06 22:35:55,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:35:53" (2/3) ... [2019-11-06 22:35:55,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e0bea8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:35:55, skipping insertion in model container [2019-11-06 22:35:55,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:35:55" (3/3) ... [2019-11-06 22:35:55,092 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label42.c [2019-11-06 22:35:55,103 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:35:55,112 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:35:55,125 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:35:55,165 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:35:55,166 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:35:55,168 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:35:55,168 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:35:55,168 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:35:55,169 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:35:55,169 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:35:55,169 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:35:55,216 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2019-11-06 22:35:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-06 22:35:55,238 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:35:55,239 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:35:55,241 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:35:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:35:55,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1304641474, now seen corresponding path program 1 times [2019-11-06 22:35:55,258 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:35:55,258 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721669944] [2019-11-06 22:35:55,259 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:35:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:35:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:35:55,805 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721669944] [2019-11-06 22:35:55,807 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:35:55,807 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:35:55,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209445988] [2019-11-06 22:35:55,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:35:55,823 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:35:55,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:35:55,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:35:55,847 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2019-11-06 22:35:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:35:56,825 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2019-11-06 22:35:56,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:35:56,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-11-06 22:35:56,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:35:56,860 INFO L225 Difference]: With dead ends: 618 [2019-11-06 22:35:56,860 INFO L226 Difference]: Without dead ends: 320 [2019-11-06 22:35:56,873 INFO L630 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 [2019-11-06 22:35:56,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2019-11-06 22:35:56,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2019-11-06 22:35:56,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2019-11-06 22:35:56,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 465 transitions. [2019-11-06 22:35:56,990 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 465 transitions. Word has length 106 [2019-11-06 22:35:56,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:35:56,992 INFO L462 AbstractCegarLoop]: Abstraction has 320 states and 465 transitions. [2019-11-06 22:35:56,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:35:56,993 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 465 transitions. [2019-11-06 22:35:57,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-11-06 22:35:57,005 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:35:57,005 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:35:57,006 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:35:57,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:35:57,007 INFO L82 PathProgramCache]: Analyzing trace with hash -191835239, now seen corresponding path program 1 times [2019-11-06 22:35:57,007 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:35:57,008 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879950773] [2019-11-06 22:35:57,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:35:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:35:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:35:57,187 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879950773] [2019-11-06 22:35:57,187 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:35:57,187 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:35:57,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201398015] [2019-11-06 22:35:57,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:35:57,190 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:35:57,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:35:57,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:35:57,191 INFO L87 Difference]: Start difference. First operand 320 states and 465 transitions. Second operand 3 states. [2019-11-06 22:35:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:35:57,784 INFO L93 Difference]: Finished difference Result 931 states and 1377 transitions. [2019-11-06 22:35:57,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:35:57,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2019-11-06 22:35:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:35:57,795 INFO L225 Difference]: With dead ends: 931 [2019-11-06 22:35:57,795 INFO L226 Difference]: Without dead ends: 617 [2019-11-06 22:35:57,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:35:57,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-11-06 22:35:57,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 612. [2019-11-06 22:35:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-11-06 22:35:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 857 transitions. [2019-11-06 22:35:57,849 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 857 transitions. Word has length 114 [2019-11-06 22:35:57,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:35:57,851 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 857 transitions. [2019-11-06 22:35:57,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:35:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 857 transitions. [2019-11-06 22:35:57,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2019-11-06 22:35:57,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:35:57,859 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:35:57,860 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:35:57,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:35:57,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1963401651, now seen corresponding path program 1 times [2019-11-06 22:35:57,860 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:35:57,861 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277160283] [2019-11-06 22:35:57,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:35:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:35:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:35:58,227 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277160283] [2019-11-06 22:35:58,227 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:35:58,228 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:35:58,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345896042] [2019-11-06 22:35:58,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:35:58,229 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:35:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:35:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:35:58,229 INFO L87 Difference]: Start difference. First operand 612 states and 857 transitions. Second operand 5 states. [2019-11-06 22:35:58,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:35:58,920 INFO L93 Difference]: Finished difference Result 1301 states and 1873 transitions. [2019-11-06 22:35:58,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:35:58,922 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2019-11-06 22:35:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:35:58,926 INFO L225 Difference]: With dead ends: 1301 [2019-11-06 22:35:58,927 INFO L226 Difference]: Without dead ends: 612 [2019-11-06 22:35:58,929 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:35:58,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2019-11-06 22:35:58,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2019-11-06 22:35:58,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-11-06 22:35:58,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 847 transitions. [2019-11-06 22:35:58,971 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 847 transitions. Word has length 120 [2019-11-06 22:35:58,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:35:58,971 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 847 transitions. [2019-11-06 22:35:58,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:35:58,972 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 847 transitions. [2019-11-06 22:35:58,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-11-06 22:35:58,974 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:35:58,974 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:35:58,975 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:35:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:35:58,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1978192554, now seen corresponding path program 1 times [2019-11-06 22:35:58,975 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:35:58,976 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814949751] [2019-11-06 22:35:58,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:35:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:35:59,056 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:35:59,057 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814949751] [2019-11-06 22:35:59,057 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:35:59,057 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:35:59,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128580302] [2019-11-06 22:35:59,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:35:59,058 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:35:59,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:35:59,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:35:59,059 INFO L87 Difference]: Start difference. First operand 612 states and 847 transitions. Second operand 6 states. [2019-11-06 22:35:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:35:59,767 INFO L93 Difference]: Finished difference Result 1243 states and 1739 transitions. [2019-11-06 22:35:59,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:35:59,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2019-11-06 22:35:59,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:35:59,772 INFO L225 Difference]: With dead ends: 1243 [2019-11-06 22:35:59,773 INFO L226 Difference]: Without dead ends: 637 [2019-11-06 22:35:59,775 INFO L630 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 [2019-11-06 22:35:59,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2019-11-06 22:35:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 628. [2019-11-06 22:35:59,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-11-06 22:35:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 835 transitions. [2019-11-06 22:35:59,817 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 835 transitions. Word has length 128 [2019-11-06 22:35:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:35:59,818 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 835 transitions. [2019-11-06 22:35:59,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:35:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 835 transitions. [2019-11-06 22:35:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-06 22:35:59,820 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:35:59,821 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:35:59,821 INFO L410 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:35:59,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:35:59,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1553171855, now seen corresponding path program 1 times [2019-11-06 22:35:59,822 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:35:59,822 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209014328] [2019-11-06 22:35:59,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:35:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:35:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:35:59,885 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209014328] [2019-11-06 22:35:59,885 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351151484] [2019-11-06 22:35:59,885 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 [2019-11-06 22:36:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:36:00,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:36:00,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:36:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:36:00,121 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:36:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:36:00,245 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [409044424] [2019-11-06 22:36:00,252 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 137 [2019-11-06 22:36:00,317 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:36:00,318 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)