/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/systemc/toy2.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 06:05:43,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 06:05:43,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 06:05:43,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 06:05:43,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 06:05:43,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 06:05:43,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 06:05:43,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 06:05:43,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 06:05:43,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 06:05:43,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 06:05:43,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 06:05:43,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 06:05:43,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 06:05:43,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 06:05:43,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 06:05:43,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 06:05:43,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 06:05:43,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 06:05:43,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 06:05:43,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 06:05:43,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 06:05:43,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 06:05:43,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 06:05:43,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 06:05:43,953 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 06:05:43,989 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 06:05:43,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 06:05:43,990 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 06:05:43,990 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 06:05:43,990 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 06:05:43,991 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 06:05:43,993 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 06:05:43,993 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 06:05:43,993 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 06:05:43,993 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 06:05:43,994 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 06:05:43,994 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 06:05:43,994 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 06:05:43,994 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 06:05:43,994 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 06:05:43,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 06:05:43,995 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 06:05:43,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 06:05:43,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 06:05:43,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 06:05:43,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 06:05:43,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 06:05:43,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 06:05:43,998 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 06:05:43,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 06:05:43,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 06:05:43,999 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 06:05:43,999 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 06:05:43,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 06:05:44,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 06:05:44,000 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 06:05:44,000 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 06:05:44,000 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 06:05:44,000 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 06:05:44,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 06:05:44,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 06:05:44,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 06:05:44,002 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 06:05:44,271 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 06:05:44,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 06:05:44,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 06:05:44,298 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 06:05:44,299 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 06:05:44,299 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/toy2.cil.c [2019-11-24 06:05:44,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d69be541/d2ddde6d354948129323ffefd335cbf5/FLAG499a1759b [2019-11-24 06:05:44,858 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 06:05:44,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/toy2.cil.c [2019-11-24 06:05:44,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d69be541/d2ddde6d354948129323ffefd335cbf5/FLAG499a1759b [2019-11-24 06:05:45,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d69be541/d2ddde6d354948129323ffefd335cbf5 [2019-11-24 06:05:45,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 06:05:45,214 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 06:05:45,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 06:05:45,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 06:05:45,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 06:05:45,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce8710b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45, skipping insertion in model container [2019-11-24 06:05:45,223 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 06:05:45,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 06:05:45,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:05:45,509 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 06:05:45,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:05:45,659 INFO L208 MainTranslator]: Completed translation [2019-11-24 06:05:45,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45 WrapperNode [2019-11-24 06:05:45,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 06:05:45,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 06:05:45,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 06:05:45,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 06:05:45,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 06:05:45,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 06:05:45,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 06:05:45,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 06:05:45,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (1/1) ... [2019-11-24 06:05:45,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 06:05:45,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 06:05:45,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 06:05:45,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 06:05:45,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (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 06:05:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 06:05:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 06:05:47,276 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 06:05:47,276 INFO L284 CfgBuilder]: Removed 26 assume(true) statements. [2019-11-24 06:05:47,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:05:47 BoogieIcfgContainer [2019-11-24 06:05:47,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 06:05:47,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 06:05:47,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 06:05:47,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 06:05:47,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 06:05:45" (1/3) ... [2019-11-24 06:05:47,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bff23cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:05:47, skipping insertion in model container [2019-11-24 06:05:47,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:05:45" (2/3) ... [2019-11-24 06:05:47,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bff23cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:05:47, skipping insertion in model container [2019-11-24 06:05:47,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:05:47" (3/3) ... [2019-11-24 06:05:47,285 INFO L109 eAbstractionObserver]: Analyzing ICFG toy2.cil.c [2019-11-24 06:05:47,295 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 06:05:47,302 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 06:05:47,313 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 06:05:47,338 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 06:05:47,339 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 06:05:47,339 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 06:05:47,339 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 06:05:47,339 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 06:05:47,340 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 06:05:47,340 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 06:05:47,340 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 06:05:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2019-11-24 06:05:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 06:05:47,362 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:05:47,363 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:05:47,363 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:05:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:05:47,369 INFO L82 PathProgramCache]: Analyzing trace with hash 981714518, now seen corresponding path program 1 times [2019-11-24 06:05:47,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:05:47,379 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873322589] [2019-11-24 06:05:47,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:05:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:47,562 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 06:05:47,563 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873322589] [2019-11-24 06:05:47,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:05:47,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 06:05:47,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727290352] [2019-11-24 06:05:47,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:05:47,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:05:47,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:05:47,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:05:47,587 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2019-11-24 06:05:47,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:05:47,664 INFO L93 Difference]: Finished difference Result 107 states and 173 transitions. [2019-11-24 06:05:47,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:05:47,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 06:05:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:05:47,679 INFO L225 Difference]: With dead ends: 107 [2019-11-24 06:05:47,679 INFO L226 Difference]: Without dead ends: 64 [2019-11-24 06:05:47,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:05:47,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-24 06:05:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2019-11-24 06:05:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-24 06:05:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 96 transitions. [2019-11-24 06:05:47,743 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 96 transitions. Word has length 13 [2019-11-24 06:05:47,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:05:47,744 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 96 transitions. [2019-11-24 06:05:47,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:05:47,744 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 96 transitions. [2019-11-24 06:05:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-24 06:05:47,746 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:05:47,747 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:05:47,747 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:05:47,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:05:47,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1842202081, now seen corresponding path program 1 times [2019-11-24 06:05:47,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:05:47,750 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45113948] [2019-11-24 06:05:47,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:05:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:47,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:05:47,917 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45113948] [2019-11-24 06:05:47,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:05:47,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:05:47,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923948528] [2019-11-24 06:05:47,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:05:47,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:05:47,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:05:47,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:05:47,924 INFO L87 Difference]: Start difference. First operand 63 states and 96 transitions. Second operand 3 states. [2019-11-24 06:05:47,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:05:47,979 INFO L93 Difference]: Finished difference Result 114 states and 179 transitions. [2019-11-24 06:05:47,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:05:47,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2019-11-24 06:05:47,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:05:47,981 INFO L225 Difference]: With dead ends: 114 [2019-11-24 06:05:47,981 INFO L226 Difference]: Without dead ends: 80 [2019-11-24 06:05:47,982 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:05:47,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-24 06:05:47,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2019-11-24 06:05:47,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2019-11-24 06:05:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 112 transitions. [2019-11-24 06:05:47,993 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 112 transitions. Word has length 21 [2019-11-24 06:05:47,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:05:47,994 INFO L462 AbstractCegarLoop]: Abstraction has 73 states and 112 transitions. [2019-11-24 06:05:47,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:05:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 112 transitions. [2019-11-24 06:05:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-24 06:05:47,995 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:05:47,996 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] [2019-11-24 06:05:47,996 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:05:47,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:05:47,997 INFO L82 PathProgramCache]: Analyzing trace with hash 872125695, now seen corresponding path program 1 times [2019-11-24 06:05:47,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:05:47,997 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100370241] [2019-11-24 06:05:47,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:05:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:05:48,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100370241] [2019-11-24 06:05:48,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:05:48,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 06:05:48,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423333067] [2019-11-24 06:05:48,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 06:05:48,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:05:48,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 06:05:48,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 06:05:48,122 INFO L87 Difference]: Start difference. First operand 73 states and 112 transitions. Second operand 5 states. [2019-11-24 06:05:48,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:05:48,253 INFO L93 Difference]: Finished difference Result 204 states and 319 transitions. [2019-11-24 06:05:48,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 06:05:48,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-24 06:05:48,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:05:48,255 INFO L225 Difference]: With dead ends: 204 [2019-11-24 06:05:48,255 INFO L226 Difference]: Without dead ends: 135 [2019-11-24 06:05:48,256 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 06:05:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-11-24 06:05:48,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2019-11-24 06:05:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-11-24 06:05:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 167 transitions. [2019-11-24 06:05:48,277 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 167 transitions. Word has length 25 [2019-11-24 06:05:48,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:05:48,278 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 167 transitions. [2019-11-24 06:05:48,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 06:05:48,278 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 167 transitions. [2019-11-24 06:05:48,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-24 06:05:48,279 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:05:48,282 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-24 06:05:48,282 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:05:48,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:05:48,283 INFO L82 PathProgramCache]: Analyzing trace with hash 487150153, now seen corresponding path program 1 times [2019-11-24 06:05:48,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:05:48,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984268415] [2019-11-24 06:05:48,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:05:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:05:48,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984268415] [2019-11-24 06:05:48,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:05:48,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:05:48,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289413898] [2019-11-24 06:05:48,358 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:05:48,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:05:48,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:05:48,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:05:48,359 INFO L87 Difference]: Start difference. First operand 109 states and 167 transitions. Second operand 3 states. [2019-11-24 06:05:48,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:05:48,422 INFO L93 Difference]: Finished difference Result 237 states and 370 transitions. [2019-11-24 06:05:48,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:05:48,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-11-24 06:05:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:05:48,425 INFO L225 Difference]: With dead ends: 237 [2019-11-24 06:05:48,425 INFO L226 Difference]: Without dead ends: 169 [2019-11-24 06:05:48,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:05:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-11-24 06:05:48,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2019-11-24 06:05:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2019-11-24 06:05:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 253 transitions. [2019-11-24 06:05:48,461 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 253 transitions. Word has length 33 [2019-11-24 06:05:48,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:05:48,461 INFO L462 AbstractCegarLoop]: Abstraction has 167 states and 253 transitions. [2019-11-24 06:05:48,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:05:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 253 transitions. [2019-11-24 06:05:48,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-24 06:05:48,464 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:05:48,464 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2019-11-24 06:05:48,464 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:05:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:05:48,465 INFO L82 PathProgramCache]: Analyzing trace with hash 588988919, now seen corresponding path program 1 times [2019-11-24 06:05:48,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:05:48,467 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316793379] [2019-11-24 06:05:48,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:05:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:48,776 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:05:48,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316793379] [2019-11-24 06:05:48,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763171093] [2019-11-24 06:05:48,777 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 06:05:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:05:48,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 42 conjunts are in the unsatisfiable core [2019-11-24 06:05:48,886 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:05:48,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:48,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:48,959 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:48,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:48,963 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:48,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 8 terms [2019-11-24 06:05:49,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-24 06:05:49,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:05:49,364 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:05:49,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,415 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,418 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,606 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,612 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,617 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,624 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,627 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,641 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,645 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,649 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,659 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,680 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,699 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,700 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,701 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,708 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,709 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,712 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,713 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,725 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,733 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,736 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,737 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,738 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,740 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,756 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,762 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,764 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,765 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,783 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,808 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,810 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,811 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,818 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,819 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,820 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,821 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,822 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,823 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,827 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,829 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,832 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,835 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,837 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,838 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,839 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,841 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,842 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,844 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,846 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,870 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,871 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,872 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,876 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,879 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,880 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,891 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,903 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,906 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,908 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,911 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 06:05:49,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:49,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,355 WARN L192 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 39 [2019-11-24 06:05:50,362 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 06:05:50,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 06:05:50,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,374 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,376 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,377 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 06:05:50,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-24 06:05:50,379 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-24 06:05:50,383 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-24 06:05:50,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-24 06:05:50,388 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,389 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 06:05:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:05:50,509 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1518295957] [2019-11-24 06:05:50,565 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2019-11-24 06:05:50,565 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 06:05:50,575 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 06:05:50,585 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 06:05:50,586 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 06:05:51,701 WARN L192 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 207 [2019-11-24 06:05:51,871 WARN L192 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 207 [2019-11-24 06:05:52,049 WARN L192 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 200 [2019-11-24 06:05:52,523 WARN L192 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 164 [2019-11-24 06:05:52,695 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 164 [2019-11-24 06:05:53,266 WARN L192 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 179 [2019-11-24 06:05:53,491 WARN L192 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 179 [2019-11-24 06:05:53,607 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 164 [2019-11-24 06:05:54,274 WARN L192 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 420 DAG size of output: 340 [2019-11-24 06:05:54,742 WARN L192 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 420 DAG size of output: 340 [2019-11-24 06:05:55,064 WARN L192 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 329 DAG size of output: 294 [2019-11-24 06:05:55,434 WARN L192 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 297 [2019-11-24 06:05:55,798 WARN L192 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 303 [2019-11-24 06:05:56,093 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 171 [2019-11-24 06:05:56,249 WARN L192 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 171 [2019-11-24 06:05:56,609 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 160 [2019-11-24 06:05:57,328 WARN L192 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 279 [2019-11-24 06:05:57,719 WARN L192 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 330 DAG size of output: 279 [2019-11-24 06:05:57,896 WARN L192 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 267 [2019-11-24 06:05:58,324 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 176 [2019-11-24 06:05:58,544 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 176 [2019-11-24 06:05:58,684 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 164 [2019-11-24 06:05:59,258 WARN L192 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 189 [2019-11-24 06:05:59,527 WARN L192 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 189 [2019-11-24 06:05:59,629 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 165 [2019-11-24 06:06:00,011 WARN L192 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 293 [2019-11-24 06:06:00,244 WARN L192 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 293 [2019-11-24 06:06:00,448 WARN L192 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 278 [2019-11-24 06:06:00,738 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 228 [2019-11-24 06:06:00,857 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 228 [2019-11-24 06:06:00,967 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2019-11-24 06:06:01,084 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 228 [2019-11-24 06:06:01,206 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 278 DAG size of output: 228 [2019-11-24 06:06:01,352 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 206 [2019-11-24 06:06:02,045 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 224 [2019-11-24 06:06:02,326 WARN L192 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 224 [2019-11-24 06:06:02,519 WARN L192 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 213 [2019-11-24 06:06:03,600 WARN L192 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 331 [2019-11-24 06:06:03,846 WARN L192 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 331 [2019-11-24 06:06:04,047 WARN L192 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 322 [2019-11-24 06:06:04,314 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 331 [2019-11-24 06:06:04,549 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 331 [2019-11-24 06:06:04,751 WARN L192 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 322 DAG size of output: 322 [2019-11-24 06:06:04,788 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 06:06:05,018 WARN L192 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-11-24 06:06:07,272 WARN L192 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 202 DAG size of output: 137 [2019-11-24 06:06:17,332 WARN L192 SmtUtils]: Spent 9.85 s on a formula simplification. DAG size of input: 322 DAG size of output: 196 [2019-11-24 06:06:19,628 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 323 DAG size of output: 107 [2019-11-24 06:06:21,771 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 178 DAG size of output: 112 [2019-11-24 06:06:23,878 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 178 DAG size of output: 114 [2019-11-24 06:06:24,614 WARN L192 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 100 [2019-11-24 06:06:26,678 WARN L192 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 164 DAG size of output: 117 [2019-11-24 06:06:35,442 WARN L192 SmtUtils]: Spent 8.50 s on a formula simplification. DAG size of input: 312 DAG size of output: 178 [2019-11-24 06:06:37,498 WARN L192 SmtUtils]: Spent 1.64 s on a formula simplification. DAG size of input: 295 DAG size of output: 157 [2019-11-24 06:06:39,205 WARN L192 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 295 DAG size of output: 142 [2019-11-24 06:06:40,757 WARN L192 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 295 DAG size of output: 133 [2019-11-24 06:06:43,422 WARN L192 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 321 DAG size of output: 138 [2019-11-24 06:06:44,800 WARN L192 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 321 DAG size of output: 117 [2019-11-24 06:06:46,082 WARN L192 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 303 DAG size of output: 116 [2019-11-24 06:06:47,282 WARN L192 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 237 DAG size of output: 117 [2019-11-24 06:06:48,430 WARN L192 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 96 [2019-11-24 06:06:48,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-24 06:06:48,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [8, 9, 13] total 42 [2019-11-24 06:06:48,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101349767] [2019-11-24 06:06:48,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-24 06:06:48,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:06:48,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-24 06:06:48,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=1374, Unknown=0, NotChecked=0, Total=1806 [2019-11-24 06:06:48,791 INFO L87 Difference]: Start difference. First operand 167 states and 253 transitions. Second operand 19 states. [2019-11-24 06:06:50,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:06:50,597 INFO L93 Difference]: Finished difference Result 393 states and 585 transitions. [2019-11-24 06:06:50,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-24 06:06:50,597 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 47 [2019-11-24 06:06:50,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:06:50,600 INFO L225 Difference]: With dead ends: 393 [2019-11-24 06:06:50,600 INFO L226 Difference]: Without dead ends: 231 [2019-11-24 06:06:50,602 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 97 SyntacticMatches, 10 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1111 ImplicationChecksByTransitivity, 45.1s TimeCoverageRelationStatistics Valid=432, Invalid=1374, Unknown=0, NotChecked=0, Total=1806 [2019-11-24 06:06:50,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2019-11-24 06:06:50,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 219. [2019-11-24 06:06:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2019-11-24 06:06:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 314 transitions. [2019-11-24 06:06:50,627 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 314 transitions. Word has length 47 [2019-11-24 06:06:50,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:06:50,628 INFO L462 AbstractCegarLoop]: Abstraction has 219 states and 314 transitions. [2019-11-24 06:06:50,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-24 06:06:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 314 transitions. [2019-11-24 06:06:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-24 06:06:50,631 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:06:50,631 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 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] [2019-11-24 06:06:50,834 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:06:50,835 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:06:50,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:06:50,836 INFO L82 PathProgramCache]: Analyzing trace with hash 262371257, now seen corresponding path program 1 times [2019-11-24 06:06:50,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:06:50,837 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749976287] [2019-11-24 06:06:50,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:06:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:06:51,352 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:06:51,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749976287] [2019-11-24 06:06:51,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906396975] [2019-11-24 06:06:51,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:06:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:06:51,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 47 conjunts are in the unsatisfiable core [2019-11-24 06:06:51,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:06:51,703 WARN L192 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-11-24 06:06:51,992 WARN L192 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 27 [2019-11-24 06:06:52,186 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:06:52,186 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:06:54,256 WARN L192 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 263 DAG size of output: 137 [2019-11-24 06:06:55,159 WARN L192 SmtUtils]: Spent 813.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 126 [2019-11-24 06:06:58,428 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 557 DAG size of output: 41 [2019-11-24 06:06:58,753 WARN L192 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 30 [2019-11-24 06:06:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 1 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:06:58,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1841008668] [2019-11-24 06:06:58,788 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2019-11-24 06:06:58,788 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 06:06:58,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 06:06:58,789 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 06:06:58,789 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 06:06:59,422 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 206 [2019-11-24 06:06:59,622 WARN L192 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 204 [2019-11-24 06:06:59,968 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2019-11-24 06:07:00,174 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 242 [2019-11-24 06:07:02,776 WARN L192 SmtUtils]: Spent 721.00 ms on a formula simplification. DAG size of input: 582 DAG size of output: 516 [2019-11-24 06:07:03,473 WARN L192 SmtUtils]: Spent 694.00 ms on a formula simplification. DAG size of input: 582 DAG size of output: 516 [2019-11-24 06:07:04,104 WARN L192 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 496 DAG size of output: 488 [2019-11-24 06:07:05,681 WARN L192 SmtUtils]: Spent 675.00 ms on a formula simplification. DAG size of input: 992 DAG size of output: 255 [2019-11-24 06:07:06,336 WARN L192 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 992 DAG size of output: 255 [2019-11-24 06:07:06,957 WARN L192 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 606 DAG size of output: 422 [2019-11-24 06:07:07,648 WARN L192 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 606 DAG size of output: 422 [2019-11-24 06:07:07,976 WARN L192 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 395 DAG size of output: 311