/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/ssh-simplified/s3_srvr_13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 06:02:49,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 06:02:49,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 06:02:49,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-24 06:02:49,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 06:02:49,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 06:02:49,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 06:02:49,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 06:02:49,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 06:02:49,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 06:02:49,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 06:02:49,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 06:02:49,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 06:02:49,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 06:02:49,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 06:02:49,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 06:02:49,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 06:02:50,006 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 06:02:50,022 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 06:02:50,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 06:02:50,023 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 06:02:50,023 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 06:02:50,023 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 06:02:50,023 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 06:02:50,024 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 06:02:50,024 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 06:02:50,024 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 06:02:50,024 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 06:02:50,024 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 06:02:50,025 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 06:02:50,025 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 06:02:50,025 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 06:02:50,025 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 06:02:50,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 06:02:50,026 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 06:02:50,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 06:02:50,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 06:02:50,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 06:02:50,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 06:02:50,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 06:02:50,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 06:02:50,027 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 06:02:50,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 06:02:50,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 06:02:50,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 06:02:50,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 06:02:50,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 06:02:50,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 06:02:50,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 06:02:50,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 06:02:50,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 06:02:50,030 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 06:02:50,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 06:02:50,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 06:02:50,030 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 06:02:50,030 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 06:02:50,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 06:02:50,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 06:02:50,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 06:02:50,316 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 06:02:50,317 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 06:02:50,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2019-11-24 06:02:50,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04585bbc6/b2304a0df8f2483caeabc64a97d67554/FLAG5b572fd49 [2019-11-24 06:02:50,922 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 06:02:50,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ssh-simplified/s3_srvr_13.cil.c [2019-11-24 06:02:50,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04585bbc6/b2304a0df8f2483caeabc64a97d67554/FLAG5b572fd49 [2019-11-24 06:02:51,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04585bbc6/b2304a0df8f2483caeabc64a97d67554 [2019-11-24 06:02:51,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 06:02:51,228 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 06:02:51,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 06:02:51,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 06:02:51,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 06:02:51,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20950098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51, skipping insertion in model container [2019-11-24 06:02:51,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 06:02:51,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 06:02:51,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:02:51,583 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 06:02:51,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 06:02:51,756 INFO L208 MainTranslator]: Completed translation [2019-11-24 06:02:51,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51 WrapperNode [2019-11-24 06:02:51,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 06:02:51,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 06:02:51,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 06:02:51,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 06:02:51,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 06:02:51,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 06:02:51,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 06:02:51,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 06:02:51,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (1/1) ... [2019-11-24 06:02:51,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 06:02:51,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 06:02:51,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 06:02:51,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 06:02:51,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (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 06:02:51,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 06:02:51,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 06:02:52,048 WARN L735 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-11-24 06:02:52,893 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-11-24 06:02:52,893 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-11-24 06:02:53,217 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 06:02:53,217 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 06:02:53,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:02:53 BoogieIcfgContainer [2019-11-24 06:02:53,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 06:02:53,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 06:02:53,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 06:02:53,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 06:02:53,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 06:02:51" (1/3) ... [2019-11-24 06:02:53,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d51001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:02:53, skipping insertion in model container [2019-11-24 06:02:53,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 06:02:51" (2/3) ... [2019-11-24 06:02:53,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d51001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 06:02:53, skipping insertion in model container [2019-11-24 06:02:53,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 06:02:53" (3/3) ... [2019-11-24 06:02:53,227 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2019-11-24 06:02:53,238 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 06:02:53,246 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 06:02:53,257 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 06:02:53,290 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 06:02:53,290 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 06:02:53,290 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 06:02:53,290 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 06:02:53,291 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 06:02:53,291 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 06:02:53,291 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 06:02:53,291 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 06:02:53,314 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2019-11-24 06:02:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 06:02:53,323 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:02:53,324 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:02:53,325 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:02:53,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:02:53,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1750142300, now seen corresponding path program 1 times [2019-11-24 06:02:53,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:02:53,346 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540620264] [2019-11-24 06:02:53,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:02:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:02:53,633 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 06:02:53,635 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540620264] [2019-11-24 06:02:53,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:02:53,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-24 06:02:53,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538243397] [2019-11-24 06:02:53,646 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:02:53,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:02:53,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:02:53,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:02:53,664 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 3 states. [2019-11-24 06:02:53,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:02:53,976 INFO L93 Difference]: Finished difference Result 250 states and 435 transitions. [2019-11-24 06:02:53,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:02:53,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-24 06:02:53,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:02:53,999 INFO L225 Difference]: With dead ends: 250 [2019-11-24 06:02:53,999 INFO L226 Difference]: Without dead ends: 132 [2019-11-24 06:02:54,005 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 06:02:54,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2019-11-24 06:02:54,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2019-11-24 06:02:54,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-11-24 06:02:54,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 193 transitions. [2019-11-24 06:02:54,085 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 193 transitions. Word has length 19 [2019-11-24 06:02:54,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:02:54,085 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 193 transitions. [2019-11-24 06:02:54,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:02:54,085 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 193 transitions. [2019-11-24 06:02:54,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-24 06:02:54,087 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:02:54,087 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:02:54,087 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:02:54,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:02:54,088 INFO L82 PathProgramCache]: Analyzing trace with hash -11900598, now seen corresponding path program 1 times [2019-11-24 06:02:54,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:02:54,088 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143145365] [2019-11-24 06:02:54,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:02:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:02:54,198 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 06:02:54,198 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143145365] [2019-11-24 06:02:54,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:02:54,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:02:54,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34946323] [2019-11-24 06:02:54,201 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 06:02:54,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:02:54,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 06:02:54,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 06:02:54,202 INFO L87 Difference]: Start difference. First operand 130 states and 193 transitions. Second operand 4 states. [2019-11-24 06:02:54,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:02:54,421 INFO L93 Difference]: Finished difference Result 271 states and 401 transitions. [2019-11-24 06:02:54,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 06:02:54,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-11-24 06:02:54,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:02:54,425 INFO L225 Difference]: With dead ends: 271 [2019-11-24 06:02:54,425 INFO L226 Difference]: Without dead ends: 143 [2019-11-24 06:02:54,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 06:02:54,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2019-11-24 06:02:54,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 136. [2019-11-24 06:02:54,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-11-24 06:02:54,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 201 transitions. [2019-11-24 06:02:54,438 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 201 transitions. Word has length 24 [2019-11-24 06:02:54,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:02:54,439 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 201 transitions. [2019-11-24 06:02:54,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 06:02:54,439 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 201 transitions. [2019-11-24 06:02:54,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-24 06:02:54,440 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:02:54,441 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:02:54,441 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:02:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:02:54,441 INFO L82 PathProgramCache]: Analyzing trace with hash 234265027, now seen corresponding path program 1 times [2019-11-24 06:02:54,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:02:54,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877788342] [2019-11-24 06:02:54,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:02:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:02:54,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:02:54,502 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877788342] [2019-11-24 06:02:54,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:02:54,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:02:54,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081282939] [2019-11-24 06:02:54,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:02:54,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:02:54,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:02:54,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:02:54,504 INFO L87 Difference]: Start difference. First operand 136 states and 201 transitions. Second operand 3 states. [2019-11-24 06:02:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:02:54,786 INFO L93 Difference]: Finished difference Result 324 states and 494 transitions. [2019-11-24 06:02:54,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:02:54,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-11-24 06:02:54,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:02:54,790 INFO L225 Difference]: With dead ends: 324 [2019-11-24 06:02:54,791 INFO L226 Difference]: Without dead ends: 178 [2019-11-24 06:02:54,793 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 06:02:54,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-11-24 06:02:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 175. [2019-11-24 06:02:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-11-24 06:02:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 254 transitions. [2019-11-24 06:02:54,818 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 254 transitions. Word has length 34 [2019-11-24 06:02:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:02:54,818 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 254 transitions. [2019-11-24 06:02:54,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:02:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 254 transitions. [2019-11-24 06:02:54,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-11-24 06:02:54,822 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:02:54,824 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:02:54,824 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:02:54,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:02:54,824 INFO L82 PathProgramCache]: Analyzing trace with hash -509312477, now seen corresponding path program 1 times [2019-11-24 06:02:54,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:02:54,825 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607210674] [2019-11-24 06:02:54,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:02:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:02:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:02:54,941 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607210674] [2019-11-24 06:02:54,942 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624977350] [2019-11-24 06:02:54,943 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 06:02:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:02:55,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 06:02:55,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 06:02:55,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:02:55,049 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 06:02:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:02:55,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [157178944] [2019-11-24 06:02:55,097 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2019-11-24 06:02:55,098 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 06:02:55,104 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 06:02:55,112 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 06:02:55,112 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 06:02:55,363 WARN L192 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2019-11-24 06:02:55,484 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2019-11-24 06:02:55,592 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2019-11-24 06:02:55,758 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2019-11-24 06:02:56,028 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 256 [2019-11-24 06:02:56,284 WARN L192 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2019-11-24 06:02:56,420 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 209 [2019-11-24 06:02:56,554 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2019-11-24 06:02:56,813 WARN L192 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 267 [2019-11-24 06:02:57,253 WARN L192 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 269 [2019-11-24 06:02:57,466 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2019-11-24 06:02:57,617 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2019-11-24 06:02:57,745 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2019-11-24 06:02:58,013 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 213 [2019-11-24 06:02:58,132 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 213 [2019-11-24 06:02:58,238 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2019-11-24 06:02:58,440 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 213 [2019-11-24 06:02:58,677 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2019-11-24 06:02:59,312 WARN L192 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2019-11-24 06:02:59,413 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2019-11-24 06:02:59,738 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 06:03:00,440 WARN L192 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 143 [2019-11-24 06:03:03,133 WARN L192 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 215 DAG size of output: 193 [2019-11-24 06:03:05,849 WARN L192 SmtUtils]: Spent 2.62 s on a formula simplification. DAG size of input: 214 DAG size of output: 193 [2019-11-24 06:03:07,610 WARN L192 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 150 [2019-11-24 06:03:08,687 WARN L192 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 276 DAG size of output: 153 [2019-11-24 06:03:10,893 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 211 DAG size of output: 177 [2019-11-24 06:03:12,870 WARN L192 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 210 DAG size of output: 185 [2019-11-24 06:03:14,838 WARN L192 SmtUtils]: Spent 1.82 s on a formula simplification. DAG size of input: 212 DAG size of output: 187 [2019-11-24 06:03:17,898 WARN L192 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 271 DAG size of output: 178 [2019-11-24 06:03:19,235 WARN L192 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 275 DAG size of output: 162 [2019-11-24 06:03:20,520 WARN L192 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 274 DAG size of output: 166 [2019-11-24 06:03:22,487 WARN L192 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 211 DAG size of output: 183 [2019-11-24 06:03:22,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-24 06:03:22,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 18 [2019-11-24 06:03:22,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280906366] [2019-11-24 06:03:22,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-24 06:03:22,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:22,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-24 06:03:22,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2019-11-24 06:03:22,630 INFO L87 Difference]: Start difference. First operand 175 states and 254 transitions. Second operand 14 states. [2019-11-24 06:03:23,863 WARN L192 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 192 DAG size of output: 146 [2019-11-24 06:03:29,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:29,036 INFO L93 Difference]: Finished difference Result 442 states and 650 transitions. [2019-11-24 06:03:29,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-24 06:03:29,037 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2019-11-24 06:03:29,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:29,039 INFO L225 Difference]: With dead ends: 442 [2019-11-24 06:03:29,040 INFO L226 Difference]: Without dead ends: 256 [2019-11-24 06:03:29,041 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 93 SyntacticMatches, 19 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2019-11-24 06:03:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2019-11-24 06:03:29,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 243. [2019-11-24 06:03:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2019-11-24 06:03:29,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 326 transitions. [2019-11-24 06:03:29,065 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 326 transitions. Word has length 42 [2019-11-24 06:03:29,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:29,065 INFO L462 AbstractCegarLoop]: Abstraction has 243 states and 326 transitions. [2019-11-24 06:03:29,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-24 06:03:29,066 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 326 transitions. [2019-11-24 06:03:29,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-24 06:03:29,067 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:29,067 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:29,268 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 06:03:29,268 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:29,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2098728119, now seen corresponding path program 1 times [2019-11-24 06:03:29,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:29,269 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711545447] [2019-11-24 06:03:29,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 06:03:29,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711545447] [2019-11-24 06:03:29,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:29,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 06:03:29,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447355392] [2019-11-24 06:03:29,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 06:03:29,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:29,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 06:03:29,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 06:03:29,343 INFO L87 Difference]: Start difference. First operand 243 states and 326 transitions. Second operand 4 states. [2019-11-24 06:03:29,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:29,497 INFO L93 Difference]: Finished difference Result 444 states and 619 transitions. [2019-11-24 06:03:29,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 06:03:29,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2019-11-24 06:03:29,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:29,499 INFO L225 Difference]: With dead ends: 444 [2019-11-24 06:03:29,500 INFO L226 Difference]: Without dead ends: 271 [2019-11-24 06:03:29,500 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 06:03:29,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2019-11-24 06:03:29,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 248. [2019-11-24 06:03:29,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2019-11-24 06:03:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 335 transitions. [2019-11-24 06:03:29,519 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 335 transitions. Word has length 46 [2019-11-24 06:03:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:29,520 INFO L462 AbstractCegarLoop]: Abstraction has 248 states and 335 transitions. [2019-11-24 06:03:29,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 06:03:29,520 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 335 transitions. [2019-11-24 06:03:29,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-11-24 06:03:29,523 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:29,523 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:29,523 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:29,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:29,523 INFO L82 PathProgramCache]: Analyzing trace with hash -959408555, now seen corresponding path program 1 times [2019-11-24 06:03:29,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:29,524 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688147963] [2019-11-24 06:03:29,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:29,578 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 06:03:29,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688147963] [2019-11-24 06:03:29,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:29,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 06:03:29,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068257204] [2019-11-24 06:03:29,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 06:03:29,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:29,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 06:03:29,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 06:03:29,581 INFO L87 Difference]: Start difference. First operand 248 states and 335 transitions. Second operand 4 states. [2019-11-24 06:03:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:29,824 INFO L93 Difference]: Finished difference Result 536 states and 763 transitions. [2019-11-24 06:03:29,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 06:03:29,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2019-11-24 06:03:29,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:29,828 INFO L225 Difference]: With dead ends: 536 [2019-11-24 06:03:29,828 INFO L226 Difference]: Without dead ends: 319 [2019-11-24 06:03:29,829 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-24 06:03:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2019-11-24 06:03:29,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 310. [2019-11-24 06:03:29,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2019-11-24 06:03:29,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 409 transitions. [2019-11-24 06:03:29,847 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 409 transitions. Word has length 65 [2019-11-24 06:03:29,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:29,848 INFO L462 AbstractCegarLoop]: Abstraction has 310 states and 409 transitions. [2019-11-24 06:03:29,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 06:03:29,848 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 409 transitions. [2019-11-24 06:03:29,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-24 06:03:29,851 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:29,851 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:29,851 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:29,852 INFO L82 PathProgramCache]: Analyzing trace with hash -82101125, now seen corresponding path program 1 times [2019-11-24 06:03:29,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:29,852 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281284958] [2019-11-24 06:03:29,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 06:03:29,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281284958] [2019-11-24 06:03:29,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:29,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:29,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845515539] [2019-11-24 06:03:29,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:29,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:29,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:29,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:29,903 INFO L87 Difference]: Start difference. First operand 310 states and 409 transitions. Second operand 3 states. [2019-11-24 06:03:30,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:30,115 INFO L93 Difference]: Finished difference Result 626 states and 869 transitions. [2019-11-24 06:03:30,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:30,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-11-24 06:03:30,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:30,118 INFO L225 Difference]: With dead ends: 626 [2019-11-24 06:03:30,118 INFO L226 Difference]: Without dead ends: 375 [2019-11-24 06:03:30,119 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 06:03:30,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2019-11-24 06:03:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 362. [2019-11-24 06:03:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 362 states. [2019-11-24 06:03:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 480 transitions. [2019-11-24 06:03:30,139 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 480 transitions. Word has length 75 [2019-11-24 06:03:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:30,140 INFO L462 AbstractCegarLoop]: Abstraction has 362 states and 480 transitions. [2019-11-24 06:03:30,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 480 transitions. [2019-11-24 06:03:30,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-11-24 06:03:30,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:30,141 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2019-11-24 06:03:30,142 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:30,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:30,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1731847254, now seen corresponding path program 1 times [2019-11-24 06:03:30,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:30,143 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570839784] [2019-11-24 06:03:30,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 06:03:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-24 06:03:30,183 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570839784] [2019-11-24 06:03:30,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 06:03:30,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 06:03:30,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665396888] [2019-11-24 06:03:30,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 06:03:30,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 06:03:30,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 06:03:30,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 06:03:30,185 INFO L87 Difference]: Start difference. First operand 362 states and 480 transitions. Second operand 3 states. [2019-11-24 06:03:30,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 06:03:30,320 INFO L93 Difference]: Finished difference Result 680 states and 924 transitions. [2019-11-24 06:03:30,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 06:03:30,320 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2019-11-24 06:03:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 06:03:30,323 INFO L225 Difference]: With dead ends: 680 [2019-11-24 06:03:30,323 INFO L226 Difference]: Without dead ends: 387 [2019-11-24 06:03:30,324 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 06:03:30,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2019-11-24 06:03:30,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2019-11-24 06:03:30,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2019-11-24 06:03:30,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 508 transitions. [2019-11-24 06:03:30,343 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 508 transitions. Word has length 82 [2019-11-24 06:03:30,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 06:03:30,344 INFO L462 AbstractCegarLoop]: Abstraction has 387 states and 508 transitions. [2019-11-24 06:03:30,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 06:03:30,344 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 508 transitions. [2019-11-24 06:03:30,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-11-24 06:03:30,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 06:03:30,346 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 06:03:30,346 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 06:03:30,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 06:03:30,346 INFO L82 PathProgramCache]: Analyzing trace with hash 222171739, now seen corresponding path program 1 times [2019-11-24 06:03:30,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 06:03:30,347 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177704660] [2019-11-24 06:03:30,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 06:03:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 06:03:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-24 06:03:30,482 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-24 06:03:30,483 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-24 06:03:30,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 06:03:30 BoogieIcfgContainer [2019-11-24 06:03:30,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 06:03:30,592 INFO L168 Benchmark]: Toolchain (without parser) took 39363.44 ms. Allocated memory was 141.6 MB in the beginning and 599.8 MB in the end (delta: 458.2 MB). Free memory was 102.2 MB in the beginning and 406.9 MB in the end (delta: -304.7 MB). Peak memory consumption was 153.5 MB. Max. memory is 7.1 GB. [2019-11-24 06:03:30,600 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 141.6 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-24 06:03:30,601 INFO L168 Benchmark]: CACSL2BoogieTranslator took 527.82 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 102.0 MB in the beginning and 177.9 MB in the end (delta: -75.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2019-11-24 06:03:30,602 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.88 ms. Allocated memory is still 202.9 MB. Free memory was 177.9 MB in the beginning and 174.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-11-24 06:03:30,603 INFO L168 Benchmark]: Boogie Preprocessor took 43.04 ms. Allocated memory is still 202.9 MB. Free memory was 174.5 MB in the beginning and 172.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-11-24 06:03:30,604 INFO L168 Benchmark]: RCFGBuilder took 1351.40 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 172.5 MB in the beginning and 197.9 MB in the end (delta: -25.4 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. [2019-11-24 06:03:30,604 INFO L168 Benchmark]: TraceAbstraction took 37369.91 ms. Allocated memory was 235.4 MB in the beginning and 599.8 MB in the end (delta: 364.4 MB). Free memory was 197.9 MB in the beginning and 406.9 MB in the end (delta: -209.0 MB). Peak memory consumption was 155.4 MB. Max. memory is 7.1 GB. [2019-11-24 06:03:30,616 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 141.6 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 527.82 ms. Allocated memory was 141.6 MB in the beginning and 202.9 MB in the end (delta: 61.3 MB). Free memory was 102.0 MB in the beginning and 177.9 MB in the end (delta: -75.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.88 ms. Allocated memory is still 202.9 MB. Free memory was 177.9 MB in the beginning and 174.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.04 ms. Allocated memory is still 202.9 MB. Free memory was 174.5 MB in the beginning and 172.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1351.40 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 172.5 MB in the beginning and 197.9 MB in the end (delta: -25.4 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37369.91 ms. Allocated memory was 235.4 MB in the beginning and 599.8 MB in the end (delta: 364.4 MB). Free memory was 197.9 MB in the beginning and 406.9 MB in the end (delta: -209.0 MB). Peak memory consumption was 155.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 642]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L647] int s ; [L648] int tmp ; [L652] s = 8464 [L11] int s__info_callback = __VERIFIER_nondet_int() ; [L12] int s__in_handshake = __VERIFIER_nondet_int() ; [L13] int s__state ; [L14] int s__new_session ; [L15] int s__server ; [L16] int s__version = __VERIFIER_nondet_int() ; [L17] int s__type ; [L18] int s__init_num ; [L19] int s__hit = __VERIFIER_nondet_int() ; [L20] int s__rwstate ; [L21] int s__init_buf___0 = 1; [L22] int s__debug = __VERIFIER_nondet_int() ; [L23] int s__shutdown ; [L24] int s__cert = __VERIFIER_nondet_int() ; [L25] int s__options = __VERIFIER_nondet_int() ; [L26] int s__verify_mode = __VERIFIER_nondet_int() ; [L27] int s__session__peer = __VERIFIER_nondet_int() ; [L28] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L29] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L33] int s__s3__tmp__cert_request ; [L34] int s__s3__tmp__reuse_message ; [L35] int s__s3__tmp__use_rsa_tmp ; [L36] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_cipher__algorithms ; [L38] int s__s3__tmp__next_state___0 ; [L39] int s__s3__tmp__new_cipher__algo_strength ; [L40] int s__session__cipher ; [L41] int buf ; [L42] unsigned long l ; [L43] unsigned long Time ; [L44] unsigned long tmp ; [L45] int cb ; [L46] long num1 = __VERIFIER_nondet_long() ; [L47] int ret ; [L48] int new_state ; [L49] int state ; [L50] int skip ; [L51] int got_new_session ; [L52] int tmp___1 = __VERIFIER_nondet_int() ; [L53] int tmp___2 = __VERIFIER_nondet_int() ; [L54] int tmp___3 = __VERIFIER_nondet_int() ; [L55] int tmp___4 = __VERIFIER_nondet_int() ; [L56] int tmp___5 = __VERIFIER_nondet_int() ; [L57] int tmp___6 = __VERIFIER_nondet_int() ; [L58] int tmp___7 = __VERIFIER_nondet_int() ; [L59] long tmp___8 = __VERIFIER_nondet_long() ; [L60] int tmp___9 = __VERIFIER_nondet_int() ; [L61] int tmp___10 = __VERIFIER_nondet_int() ; [L62] int blastFlag ; [L63] int __cil_tmp55 ; [L64] unsigned long __cil_tmp56 ; [L65] unsigned long __cil_tmp57 ; [L66] unsigned long __cil_tmp58 ; [L67] unsigned long __cil_tmp59 ; [L68] int __cil_tmp60 ; [L69] unsigned long __cil_tmp61 ; [L72] s__state = initial_state [L73] blastFlag = 0 [L74] tmp = __VERIFIER_nondet_int() [L75] Time = tmp [L76] cb = 0 [L77] ret = -1 [L78] skip = 0 [L79] got_new_session = 0 [L80] COND TRUE s__info_callback != 0 [L81] cb = s__info_callback [L87] s__in_handshake ++ [L88] COND FALSE !(tmp___1 + 12288) [L93] COND FALSE !(s__cert == 0) [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND TRUE s__state == 8464 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] got_new_session = 1 [L279] s__state = 8496 [L280] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND TRUE s__state == 8496 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L288] COND FALSE !(ret <= 0) [L291] COND FALSE !(\read(s__hit)) [L294] s__state = 8512 [L296] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND TRUE s__state == 8512 [L301] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L302] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L303] COND TRUE __cil_tmp56 + 256UL [L304] skip = 1 [L315] s__state = 8528 [L316] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND FALSE !(! s__s3__tmp__reuse_message) [L631] skip = 0 [L97] COND TRUE 1 [L99] state = s__state [L100] COND FALSE !(s__state == 12292) [L103] COND FALSE !(s__state == 16384) [L106] COND FALSE !(s__state == 8192) [L109] COND FALSE !(s__state == 24576) [L112] COND FALSE !(s__state == 8195) [L115] COND FALSE !(s__state == 8480) [L118] COND FALSE !(s__state == 8481) [L121] COND FALSE !(s__state == 8482) [L124] COND FALSE !(s__state == 8464) [L127] COND FALSE !(s__state == 8465) [L130] COND FALSE !(s__state == 8466) [L133] COND FALSE !(s__state == 8496) [L136] COND FALSE !(s__state == 8497) [L139] COND FALSE !(s__state == 8512) [L142] COND FALSE !(s__state == 8513) [L145] COND TRUE s__state == 8528 [L320] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L321] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L323] __cil_tmp57 = (unsigned long )s__options [L324] COND TRUE __cil_tmp57 + 2097152UL [L325] s__s3__tmp__use_rsa_tmp = 1 [L330] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L357] ret = __VERIFIER_nondet_int() [L358] COND FALSE !(blastFlag == 6) [L361] COND FALSE !(ret <= 0) [L378] s__state = 8544 [L379] s__init_num = 0 [L599] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L600] COND TRUE ! s__s3__tmp__reuse_message [L601] COND TRUE ! skip [L602] COND TRUE state == 8528 [L603] COND TRUE s__state == 8544 [L604] COND TRUE tmp___7 != 1024 [L605] COND TRUE tmp___7 != 512 [L606] COND TRUE __cil_tmp58 != 4294967294 [L607] COND TRUE l != 4294967266 [L642] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 114 locations, 1 error locations. Result: UNSAFE, OverallTime: 37.2s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1207 SDtfs, 675 SDslu, 799 SDs, 0 SdLazy, 2246 SolverSat, 224 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 157 GetRequests, 108 SyntacticMatches, 20 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 24.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=387occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 70 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 517 NumberOfCodeBlocks, 517 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 461 ConstructedInterpolants, 0 QuantifiedInterpolants, 50929 SizeOfPredicates, 2 NumberOfNonLiveVariables, 152 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 206/212 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 4642, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 30, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 96, TOOLS_POST_TIME[ms]: 279, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 96, TOOLS_QUANTIFIERELIM_TIME[ms]: 228, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 30, FLUID_QUERY_TIME[ms]: 8, FLUID_QUERIES: 128, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 9, DOMAIN_JOIN_TIME[ms]: 2982, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 1065, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 32, DOMAIN_ISBOTTOM_APPLICATIONS: 30, DOMAIN_ISBOTTOM_TIME[ms]: 177, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 2573, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 2572, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 7, REGEX_TO_DAG_TIME[ms]: 9, DAG_COMPRESSION_TIME[ms]: 36, DAG_COMPRESSION_PROCESSED_NODES: 962, DAG_COMPRESSION_RETAINED_NODES: 97, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...