/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/product-lines/minepump_spec5_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:33:05,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:33:05,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:33:05,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 05:33:05,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 05:33:05,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 05:33:05,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 05:33:05,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 05:33:05,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 05:33:05,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 05:33:05,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 05:33:05,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 05:33:05,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:33:05,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:33:05,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:33:05,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:33:05,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:33:05,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:33:05,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:33:05,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:33:05,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:33:05,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:33:05,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:33:05,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:33:05,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:33:05,944 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 05:33:05,970 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:33:05,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:33:05,971 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:33:05,971 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:33:05,971 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:33:05,971 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:33:05,972 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:33:05,972 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:33:05,972 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:33:05,972 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:33:05,972 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:33:05,973 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:33:05,973 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:33:05,973 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:33:05,973 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:33:05,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:33:05,974 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:33:05,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:33:05,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:33:05,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:33:05,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:33:05,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:33:05,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:33:05,976 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:33:05,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:33:05,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:33:05,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:33:05,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:33:05,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:33:05,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:33:05,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:33:05,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:33:05,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:33:05,978 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:33:05,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:33:05,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:33:05,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:33:05,978 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:33:06,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:33:06,271 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:33:06,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:33:06,278 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:33:06,279 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:33:06,280 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c [2019-11-24 05:33:06,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe301c52e/ef126059fe2a40e3840a474940b5290f/FLAGb44ccd20a [2019-11-24 05:33:06,916 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:33:06,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product34.cil.c [2019-11-24 05:33:06,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe301c52e/ef126059fe2a40e3840a474940b5290f/FLAGb44ccd20a [2019-11-24 05:33:07,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe301c52e/ef126059fe2a40e3840a474940b5290f [2019-11-24 05:33:07,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:33:07,253 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:33:07,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:33:07,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:33:07,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:33:07,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:33:07" (1/1) ... [2019-11-24 05:33:07,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14880397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:07, skipping insertion in model container [2019-11-24 05:33:07,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:33:07" (1/1) ... [2019-11-24 05:33:07,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:33:07,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:33:07,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:33:07,881 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:33:08,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:33:08,053 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:33:08,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08 WrapperNode [2019-11-24 05:33:08,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:33:08,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:33:08,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:33:08,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:33:08,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:33:08,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:33:08,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:33:08,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:33:08,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (1/1) ... [2019-11-24 05:33:08,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:33:08,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:33:08,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:33:08,202 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:33:08,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (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 05:33:08,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:33:08,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:33:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:33:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:33:09,766 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:33:09,766 INFO L284 CfgBuilder]: Removed 112 assume(true) statements. [2019-11-24 05:33:09,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:33:09 BoogieIcfgContainer [2019-11-24 05:33:09,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:33:09,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:33:09,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:33:09,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:33:09,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:33:07" (1/3) ... [2019-11-24 05:33:09,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c93c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:33:09, skipping insertion in model container [2019-11-24 05:33:09,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:33:08" (2/3) ... [2019-11-24 05:33:09,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c93c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:33:09, skipping insertion in model container [2019-11-24 05:33:09,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:33:09" (3/3) ... [2019-11-24 05:33:09,776 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product34.cil.c [2019-11-24 05:33:09,786 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:33:09,794 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:33:09,805 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:33:09,834 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:33:09,835 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:33:09,835 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:33:09,835 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:33:09,835 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:33:09,836 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:33:09,836 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:33:09,836 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:33:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:33:09,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:33:09,857 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:33:09,858 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:33:09,859 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:33:09,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:33:09,865 INFO L82 PathProgramCache]: Analyzing trace with hash -2060846558, now seen corresponding path program 1 times [2019-11-24 05:33:09,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:33:09,875 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867104263] [2019-11-24 05:33:09,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:33:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:33:10,346 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 05:33:10,347 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867104263] [2019-11-24 05:33:10,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:33:10,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 05:33:10,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51365696] [2019-11-24 05:33:10,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-24 05:33:10,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:33:10,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-24 05:33:10,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-24 05:33:10,374 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2019-11-24 05:33:10,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:33:10,562 INFO L93 Difference]: Finished difference Result 92 states and 135 transitions. [2019-11-24 05:33:10,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-24 05:33:10,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-24 05:33:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:33:10,576 INFO L225 Difference]: With dead ends: 92 [2019-11-24 05:33:10,576 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:33:10,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-24 05:33:10,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:33:10,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2019-11-24 05:33:10,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-24 05:33:10,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2019-11-24 05:33:10,621 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 8 [2019-11-24 05:33:10,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:33:10,622 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2019-11-24 05:33:10,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-24 05:33:10,622 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2019-11-24 05:33:10,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:33:10,623 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:33:10,623 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:33:10,623 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:33:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:33:10,624 INFO L82 PathProgramCache]: Analyzing trace with hash 2105938346, now seen corresponding path program 1 times [2019-11-24 05:33:10,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:33:10,625 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391503973] [2019-11-24 05:33:10,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:33:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:33:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:33:10,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391503973] [2019-11-24 05:33:10,889 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330645412] [2019-11-24 05:33:10,889 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 05:33:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:33:11,044 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-24 05:33:11,052 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:33:11,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,140 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:33:11,148 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:33:11,188 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,189 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,195 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,198 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,200 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,204 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:33:11,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 05:33:11,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1450015885] [2019-11-24 05:33:11,258 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:33:11,259 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:33:11,265 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:33:11,272 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:33:11,273 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:33:19,788 WARN L192 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 478 [2019-11-24 05:33:21,729 WARN L192 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:33:21,899 WARN L192 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 486 [2019-11-24 05:33:22,505 WARN L192 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 606 DAG size of output: 589 [2019-11-24 05:33:23,780 WARN L192 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 690 [2019-11-24 05:33:26,246 WARN L192 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 816 DAG size of output: 768 [2019-11-24 05:33:27,552 WARN L192 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 816 DAG size of output: 768 [2019-11-24 05:33:28,893 WARN L192 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 767 DAG size of output: 757 [2019-11-24 05:33:28,897 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 05:33:34,189 WARN L192 SmtUtils]: Spent 5.08 s on a formula simplification. DAG size of input: 486 DAG size of output: 431 [2019-11-24 05:34:03,375 WARN L192 SmtUtils]: Spent 28.77 s on a formula simplification. DAG size of input: 752 DAG size of output: 528 [2019-11-24 05:34:41,456 WARN L192 SmtUtils]: Spent 37.22 s on a formula simplification. DAG size of input: 804 DAG size of output: 534