/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:23:07,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:23:07,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:23:07,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 04:23:07,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:23:07,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:23:07,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:23:07,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:23:07,171 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:23:07,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:23:07,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:23:07,172 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:23:07,172 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:23:07,172 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:23:07,173 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:23:07,173 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:23:07,173 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:23:07,173 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:23:07,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:23:07,173 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:23:07,174 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:23:07,174 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:23:07,174 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:23:07,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:23:07,175 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:23:07,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:23:07,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:23:07,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:23:07,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:23:07,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:23:07,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:23:07,176 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:23:07,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:23:07,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:23:07,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:23:07,177 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:23:07,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:23:07,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:23:07,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:23:07,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:23:07,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:23:07,178 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:23:07,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:23:07,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:23:07,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:23:07,179 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:23:07,447 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:23:07,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:23:07,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:23:07,461 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:23:07,462 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:23:07,462 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2019-11-24 04:23:07,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05cb9b491/7ad8f32104414adfa23dac13279f53d8/FLAG4f8f8e992 [2019-11-24 04:23:07,937 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:23:07,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2019-11-24 04:23:07,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05cb9b491/7ad8f32104414adfa23dac13279f53d8/FLAG4f8f8e992 [2019-11-24 04:23:08,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05cb9b491/7ad8f32104414adfa23dac13279f53d8 [2019-11-24 04:23:08,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:23:08,350 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:23:08,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:23:08,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:23:08,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:23:08,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a20e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08, skipping insertion in model container [2019-11-24 04:23:08,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:23:08,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:23:08,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:23:08,572 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:23:08,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:23:08,602 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:23:08,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08 WrapperNode [2019-11-24 04:23:08,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:23:08,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:23:08,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:23:08,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:23:08,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:23:08,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:23:08,723 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:23:08,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:23:08,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (1/1) ... [2019-11-24 04:23:08,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:23:08,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:23:08,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:23:08,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:23:08,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (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 [2019-11-24 04:23:08,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:23:08,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:23:08,999 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:23:09,000 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 04:23:09,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:23:09 BoogieIcfgContainer [2019-11-24 04:23:09,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:23:09,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:23:09,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:23:09,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:23:09,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:23:08" (1/3) ... [2019-11-24 04:23:09,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82947b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:23:09, skipping insertion in model container [2019-11-24 04:23:09,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:23:08" (2/3) ... [2019-11-24 04:23:09,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82947b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:23:09, skipping insertion in model container [2019-11-24 04:23:09,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:23:09" (3/3) ... [2019-11-24 04:23:09,008 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2019-11-24 04:23:09,015 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:23:09,020 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:23:09,030 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:23:09,054 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:23:09,054 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:23:09,054 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:23:09,054 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:23:09,055 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:23:09,055 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:23:09,055 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:23:09,055 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:23:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-24 04:23:09,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-24 04:23:09,082 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:23:09,082 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:23:09,083 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:23:09,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:23:09,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1481353132, now seen corresponding path program 1 times [2019-11-24 04:23:09,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:23:09,096 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330048613] [2019-11-24 04:23:09,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:23:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:23:09,521 WARN L192 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 19 [2019-11-24 04:23:09,663 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 20 [2019-11-24 04:23:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:23:09,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330048613] [2019-11-24 04:23:09,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:23:09,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 04:23:09,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658112527] [2019-11-24 04:23:09,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 04:23:09,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:23:09,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 04:23:09,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-24 04:23:09,711 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 5 states. [2019-11-24 04:23:10,006 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2019-11-24 04:23:10,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:23:10,035 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2019-11-24 04:23:10,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:23:10,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-24 04:23:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:23:10,051 INFO L225 Difference]: With dead ends: 28 [2019-11-24 04:23:10,051 INFO L226 Difference]: Without dead ends: 9 [2019-11-24 04:23:10,058 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-24 04:23:10,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-24 04:23:10,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-24 04:23:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-24 04:23:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-24 04:23:10,094 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-24 04:23:10,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:23:10,094 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-24 04:23:10,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 04:23:10,095 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-24 04:23:10,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 04:23:10,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:23:10,096 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:23:10,096 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:23:10,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:23:10,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1300168254, now seen corresponding path program 1 times [2019-11-24 04:23:10,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:23:10,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527058344] [2019-11-24 04:23:10,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:23:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:23:10,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:23:10,253 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527058344] [2019-11-24 04:23:10,254 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899713078] [2019-11-24 04:23:10,254 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 [2019-11-24 04:23:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:23:10,309 WARN L253 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-24 04:23:10,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:23:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:23:10,399 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:23:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:23:10,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1891338984] [2019-11-24 04:23:10,508 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-24 04:23:10,508 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:23:10,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:23:10,552 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:23:10,553 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:23:12,001 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 265 DAG size of output: 243 [2019-11-24 04:23:12,238 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 290 DAG size of output: 263 [2019-11-24 04:23:12,463 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 287 [2019-11-24 04:23:12,727 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 333 DAG size of output: 304 [2019-11-24 04:23:12,961 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 328 [2019-11-24 04:23:13,231 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 386 DAG size of output: 352 [2019-11-24 04:23:13,547 WARN L192 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 428 DAG size of output: 384 [2019-11-24 04:23:13,692 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 379 [2019-11-24 04:23:13,865 WARN L192 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 451 DAG size of output: 416 [2019-11-24 04:23:14,045 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 417 DAG size of output: 408 [2019-11-24 04:23:14,253 WARN L192 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 485 DAG size of output: 438 [2019-11-24 04:23:14,449 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 436 DAG size of output: 432 [2019-11-24 04:23:14,703 WARN L192 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 522 DAG size of output: 479 [2019-11-24 04:23:14,950 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 477 DAG size of output: 473 [2019-11-24 04:23:15,254 WARN L192 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 530 [2019-11-24 04:23:15,549 WARN L192 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 529 DAG size of output: 525 [2019-11-24 04:23:15,829 WARN L192 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 643 DAG size of output: 600 [2019-11-24 04:23:16,188 WARN L192 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 599 DAG size of output: 590 [2019-11-24 04:23:16,579 WARN L192 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 703 DAG size of output: 658 [2019-11-24 04:23:17,045 WARN L192 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 658 DAG size of output: 657 [2019-11-24 04:23:17,584 WARN L192 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 812 DAG size of output: 767 [2019-11-24 04:23:18,318 WARN L192 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 767 DAG size of output: 767 [2019-11-24 04:23:19,065 WARN L192 SmtUtils]: Spent 704.00 ms on a formula simplification. DAG size of input: 936 DAG size of output: 898 [2019-11-24 04:23:19,978 WARN L192 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 896 DAG size of output: 895 [2019-11-24 04:23:20,990 WARN L192 SmtUtils]: Spent 956.00 ms on a formula simplification. DAG size of input: 1071 DAG size of output: 1029 [2019-11-24 04:23:22,305 WARN L192 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 1027 DAG size of output: 1019 [2019-11-24 04:23:23,876 WARN L192 SmtUtils]: Spent 1.37 s on a formula simplification that was a NOOP. DAG size: 1023 [2019-11-24 04:23:25,237 WARN L192 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 1024 DAG size of output: 1024 [2019-11-24 04:23:26,933 WARN L192 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 1225 DAG size of output: 1184 [2019-11-24 04:23:29,028 WARN L192 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 1182 DAG size of output: 1156 [2019-11-24 04:23:31,017 WARN L192 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 1138 DAG size of output: 1100 [2019-11-24 04:23:32,345 WARN L192 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1027 DAG size of output: 1016 [2019-11-24 04:23:34,533 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 1283 DAG size of output: 1243 [2019-11-24 04:23:37,184 WARN L192 SmtUtils]: Spent 2.56 s on a formula simplification. DAG size of input: 1226 DAG size of output: 1219 [2019-11-24 04:23:40,914 WARN L192 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 1548 DAG size of output: 1506 [2019-11-24 04:23:45,024 WARN L192 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 1486 DAG size of output: 1478 [2019-11-24 04:23:51,488 WARN L192 SmtUtils]: Spent 6.37 s on a formula simplification. DAG size of input: 1897 DAG size of output: 1850 [2019-11-24 04:23:58,532 WARN L192 SmtUtils]: Spent 6.83 s on a formula simplification. DAG size of input: 1832 DAG size of output: 1830 [2019-11-24 04:24:09,521 WARN L192 SmtUtils]: Spent 10.83 s on a formula simplification. DAG size of input: 2324 DAG size of output: 2277 [2019-11-24 04:24:21,300 WARN L192 SmtUtils]: Spent 11.50 s on a formula simplification. DAG size of input: 2269 DAG size of output: 2268 [2019-11-24 04:24:41,235 WARN L192 SmtUtils]: Spent 19.74 s on a formula simplification. DAG size of input: 2990 DAG size of output: 2942