/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_spec3_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 05:25:55,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 05:25:55,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 05:25:55,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 05:25:55,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 05:25:55,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 05:25:55,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 05:25:55,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 05:25:55,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 05:25:55,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 05:25:55,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 05:25:55,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 05:25:55,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 05:25:55,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 05:25:55,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 05:25:55,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 05:25:55,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 05:25:55,876 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 05:25:55,911 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 05:25:55,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 05:25:55,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 05:25:55,914 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 05:25:55,915 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 05:25:55,915 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 05:25:55,915 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 05:25:55,915 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 05:25:55,915 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 05:25:55,916 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 05:25:55,916 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 05:25:55,916 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 05:25:55,916 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 05:25:55,916 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 05:25:55,919 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 05:25:55,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 05:25:55,920 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 05:25:55,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 05:25:55,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 05:25:55,920 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 05:25:55,920 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 05:25:55,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 05:25:55,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 05:25:55,922 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 05:25:55,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 05:25:55,922 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 05:25:55,922 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 05:25:55,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 05:25:55,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 05:25:55,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 05:25:55,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 05:25:55,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 05:25:55,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 05:25:55,925 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 05:25:55,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 05:25:55,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 05:25:55,925 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 05:25:55,925 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 05:25:56,194 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 05:25:56,213 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 05:25:56,218 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 05:25:56,219 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 05:25:56,220 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 05:25:56,220 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product38.cil.c [2019-11-24 05:25:56,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc486167/82273e4b6e684998a6dfbdbca2e35e34/FLAG00911fc5c [2019-11-24 05:25:56,860 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 05:25:56,861 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product38.cil.c [2019-11-24 05:25:56,884 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc486167/82273e4b6e684998a6dfbdbca2e35e34/FLAG00911fc5c [2019-11-24 05:25:57,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc486167/82273e4b6e684998a6dfbdbca2e35e34 [2019-11-24 05:25:57,166 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 05:25:57,168 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 05:25:57,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:57,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 05:25:57,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 05:25:57,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4837be06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57, skipping insertion in model container [2019-11-24 05:25:57,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 05:25:57,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 05:25:57,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:57,706 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 05:25:57,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 05:25:57,848 INFO L208 MainTranslator]: Completed translation [2019-11-24 05:25:57,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57 WrapperNode [2019-11-24 05:25:57,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 05:25:57,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:57,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 05:25:57,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 05:25:57,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 05:25:57,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 05:25:57,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 05:25:57,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 05:25:57,932 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (1/1) ... [2019-11-24 05:25:57,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 05:25:57,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 05:25:57,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 05:25:57,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 05:25:57,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (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 05:25:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 05:25:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 05:25:58,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 05:25:58,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 05:26:00,231 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 05:26:00,231 INFO L284 CfgBuilder]: Removed 164 assume(true) statements. [2019-11-24 05:26:00,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:26:00 BoogieIcfgContainer [2019-11-24 05:26:00,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 05:26:00,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 05:26:00,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 05:26:00,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 05:26:00,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 05:25:57" (1/3) ... [2019-11-24 05:26:00,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559ace50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:26:00, skipping insertion in model container [2019-11-24 05:26:00,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 05:25:57" (2/3) ... [2019-11-24 05:26:00,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559ace50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 05:26:00, skipping insertion in model container [2019-11-24 05:26:00,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 05:26:00" (3/3) ... [2019-11-24 05:26:00,246 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product38.cil.c [2019-11-24 05:26:00,255 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 05:26:00,262 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-24 05:26:00,273 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-24 05:26:00,302 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 05:26:00,302 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 05:26:00,302 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 05:26:00,303 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 05:26:00,303 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 05:26:00,304 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 05:26:00,304 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 05:26:00,304 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 05:26:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-24 05:26:00,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-24 05:26:00,336 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:00,337 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:00,337 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:00,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:00,343 INFO L82 PathProgramCache]: Analyzing trace with hash -749219258, now seen corresponding path program 1 times [2019-11-24 05:26:00,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:00,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390042473] [2019-11-24 05:26:00,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:00,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:00,912 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 05:26:00,912 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390042473] [2019-11-24 05:26:00,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 05:26:00,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-24 05:26:00,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188744956] [2019-11-24 05:26:00,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 05:26:00,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 05:26:00,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 05:26:00,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-24 05:26:00,937 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2019-11-24 05:26:01,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 05:26:01,261 INFO L93 Difference]: Finished difference Result 90 states and 135 transitions. [2019-11-24 05:26:01,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 05:26:01,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2019-11-24 05:26:01,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 05:26:01,279 INFO L225 Difference]: With dead ends: 90 [2019-11-24 05:26:01,279 INFO L226 Difference]: Without dead ends: 45 [2019-11-24 05:26:01,289 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2019-11-24 05:26:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-24 05:26:01,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 29. [2019-11-24 05:26:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-24 05:26:01,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-11-24 05:26:01,325 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 8 [2019-11-24 05:26:01,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 05:26:01,326 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-11-24 05:26:01,326 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 05:26:01,326 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2019-11-24 05:26:01,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-24 05:26:01,327 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 05:26:01,327 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 05:26:01,327 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 05:26:01,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 05:26:01,328 INFO L82 PathProgramCache]: Analyzing trace with hash 293944420, now seen corresponding path program 1 times [2019-11-24 05:26:01,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 05:26:01,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658732883] [2019-11-24 05:26:01,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 05:26:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:01,544 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 05:26:01,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658732883] [2019-11-24 05:26:01,544 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647377640] [2019-11-24 05:26:01,545 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 05:26:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 05:26:01,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-24 05:26:01,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 05:26:01,845 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:01,847 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:01,848 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:01,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:01,858 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:01,862 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:01,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-24 05:26:01,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:01,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-24 05:26:01,930 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 05:26:01,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:01,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 05:26:02,013 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 05:26:02,014 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1271270583] [2019-11-24 05:26:02,038 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2019-11-24 05:26:02,039 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 05:26:02,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 05:26:02,050 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 05:26:02,051 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 05:26:11,437 WARN L192 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-24 05:26:13,134 WARN L192 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-24 05:26:13,277 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 05:26:13,827 WARN L192 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 578 [2019-11-24 05:26:14,862 WARN L192 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 678 [2019-11-24 05:26:23,532 WARN L192 SmtUtils]: Spent 6.97 s on a formula simplification. DAG size of input: 970 DAG size of output: 909 [2019-11-24 05:26:32,203 WARN L192 SmtUtils]: Spent 5.81 s on a formula simplification. DAG size of input: 899 DAG size of output: 893