/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/array-programs/copysome1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 23:22:35,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 23:22:35,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 23:22:35,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 23:22:35,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 23:22:35,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 23:22:35,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 23:22:35,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 23:22:35,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 23:22:35,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 23:22:35,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 23:22:35,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 23:22:35,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 23:22:35,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 23:22:35,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 23:22:35,342 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 23:22:35,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 23:22:35,354 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 [2019-11-23 23:22:35,368 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 23:22:35,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 23:22:35,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 23:22:35,370 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 23:22:35,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 23:22:35,370 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 23:22:35,370 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 23:22:35,370 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 23:22:35,370 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 23:22:35,371 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 23:22:35,371 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 23:22:35,371 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 23:22:35,371 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 23:22:35,371 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 23:22:35,372 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 23:22:35,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 23:22:35,372 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 23:22:35,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 23:22:35,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 23:22:35,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 23:22:35,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 23:22:35,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 23:22:35,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 23:22:35,374 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 23:22:35,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 23:22:35,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 23:22:35,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 23:22:35,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 23:22:35,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 23:22:35,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 23:22:35,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 23:22:35,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 23:22:35,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 23:22:35,376 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 23:22:35,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 23:22:35,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 23:22:35,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 23:22:35,376 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 23:22:35,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 23:22:35,663 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 23:22:35,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 23:22:35,668 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 23:22:35,668 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 23:22:35,669 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/copysome1-2.i [2019-11-23 23:22:35,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4901a63a2/bc840671da0d487892b20f2e60be38fc/FLAG246608037 [2019-11-23 23:22:36,215 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 23:22:36,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/copysome1-2.i [2019-11-23 23:22:36,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4901a63a2/bc840671da0d487892b20f2e60be38fc/FLAG246608037 [2019-11-23 23:22:36,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4901a63a2/bc840671da0d487892b20f2e60be38fc [2019-11-23 23:22:36,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 23:22:36,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 23:22:36,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 23:22:36,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 23:22:36,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 23:22:36,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:36,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f935940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36, skipping insertion in model container [2019-11-23 23:22:36,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:36,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 23:22:36,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 23:22:36,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:22:36,858 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 23:22:36,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 23:22:36,895 INFO L208 MainTranslator]: Completed translation [2019-11-23 23:22:36,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36 WrapperNode [2019-11-23 23:22:36,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 23:22:36,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 23:22:36,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 23:22:36,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 23:22:36,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:36,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:37,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 23:22:37,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 23:22:37,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 23:22:37,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 23:22:37,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:37,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:37,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:37,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:37,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:37,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:37,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (1/1) ... [2019-11-23 23:22:37,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 23:22:37,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 23:22:37,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 23:22:37,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 23:22:37,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (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 [2019-11-23 23:22:37,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 23:22:37,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 23:22:37,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 23:22:37,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 23:22:37,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 23:22:37,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 23:22:37,536 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 23:22:37,536 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 23:22:37,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:22:37 BoogieIcfgContainer [2019-11-23 23:22:37,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 23:22:37,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 23:22:37,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 23:22:37,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 23:22:37,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:22:36" (1/3) ... [2019-11-23 23:22:37,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0fadb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:22:37, skipping insertion in model container [2019-11-23 23:22:37,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:22:36" (2/3) ... [2019-11-23 23:22:37,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0fadb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:22:37, skipping insertion in model container [2019-11-23 23:22:37,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:22:37" (3/3) ... [2019-11-23 23:22:37,546 INFO L109 eAbstractionObserver]: Analyzing ICFG copysome1-2.i [2019-11-23 23:22:37,555 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 23:22:37,563 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 23:22:37,571 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 23:22:37,591 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 23:22:37,591 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 23:22:37,591 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 23:22:37,592 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 23:22:37,592 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 23:22:37,592 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 23:22:37,592 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 23:22:37,592 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 23:22:37,603 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-11-23 23:22:37,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 23:22:37,608 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:22:37,609 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:22:37,610 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:22:37,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:22:37,615 INFO L82 PathProgramCache]: Analyzing trace with hash 30397668, now seen corresponding path program 1 times [2019-11-23 23:22:37,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:22:37,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231881030] [2019-11-23 23:22:37,624 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:22:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:22:37,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 23:22:37,759 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231881030] [2019-11-23 23:22:37,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 23:22:37,760 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 23:22:37,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67679365] [2019-11-23 23:22:37,765 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 23:22:37,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 23:22:37,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 23:22:37,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 23:22:37,778 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-11-23 23:22:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 23:22:37,813 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2019-11-23 23:22:37,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 23:22:37,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-23 23:22:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 23:22:37,823 INFO L225 Difference]: With dead ends: 22 [2019-11-23 23:22:37,823 INFO L226 Difference]: Without dead ends: 12 [2019-11-23 23:22:37,826 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 [2019-11-23 23:22:37,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-23 23:22:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-23 23:22:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-23 23:22:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-11-23 23:22:37,859 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2019-11-23 23:22:37,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 23:22:37,860 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-23 23:22:37,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 23:22:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2019-11-23 23:22:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 23:22:37,861 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 23:22:37,861 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 23:22:37,861 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 23:22:37,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 23:22:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -930771532, now seen corresponding path program 1 times [2019-11-23 23:22:37,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 23:22:37,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095219583] [2019-11-23 23:22:37,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 23:22:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:22:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:22:37,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095219583] [2019-11-23 23:22:37,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596872907] [2019-11-23 23:22:37,947 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 [2019-11-23 23:22:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 23:22:38,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 23:22:38,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 23:22:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:22:38,036 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 23:22:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 23:22:38,062 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1815763277] [2019-11-23 23:22:38,087 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-23 23:22:38,087 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 23:22:38,094 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 23:22:38,102 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 23:22:38,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 23:22:40,956 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 157 [2019-11-23 23:22:41,471 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 167 [2019-11-23 23:22:43,168 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 188 [2019-11-23 23:22:45,144 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-11-23 23:22:49,049 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 196 [2019-11-23 23:22:51,414 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 184 [2019-11-23 23:23:01,203 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 218 [2019-11-23 23:23:04,020 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 221 [2019-11-23 23:23:09,545 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2019-11-23 23:23:12,382 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2019-11-23 23:23:15,234 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 235 DAG size of output: 234 [2019-11-23 23:23:18,457 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 243 [2019-11-23 23:23:21,817 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 246 [2019-11-23 23:23:24,983 WARN L192 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 246 [2019-11-23 23:23:28,868 WARN L192 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 255 [2019-11-23 23:23:32,404 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 257 DAG size of output: 256 [2019-11-23 23:23:32,589 WARN L192 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 237 [2019-11-23 23:23:36,130 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 262 DAG size of output: 261 [2019-11-23 23:23:39,924 WARN L192 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 262 [2019-11-23 23:23:43,673 WARN L192 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 265 [2019-11-23 23:23:47,838 WARN L192 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 270 [2019-11-23 23:23:48,036 WARN L192 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 251 [2019-11-23 23:23:48,177 WARN L192 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 252 [2019-11-23 23:23:51,923 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 272 DAG size of output: 271 [2019-11-23 23:23:56,250 WARN L192 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 277 DAG size of output: 276 [2019-11-23 23:24:00,389 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 279 DAG size of output: 278 [2019-11-23 23:24:04,620 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 281 DAG size of output: 280 [2019-11-23 23:24:09,460 WARN L192 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 288