/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-crafted/mapsum5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:54:59,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:54:59,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:54:59,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:54:59,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:54:59,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:54:59,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:54:59,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:55:00,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:55:00,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:55:00,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:55:00,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:55:00,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:55:00,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:55:00,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:55:00,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:55:00,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:55:00,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:55:00,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:55:00,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:55:00,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:55:00,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:55:00,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:55:00,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:55:00,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:55:00,035 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 22:55:00,054 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:55:00,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:55:00,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-23 22:55:00,055 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-23 22:55:00,056 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-23 22:55:00,056 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-23 22:55:00,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-23 22:55:00,056 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-23 22:55:00,056 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-23 22:55:00,057 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-23 22:55:00,057 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-23 22:55:00,057 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-23 22:55:00,057 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-23 22:55:00,057 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-23 22:55:00,058 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-23 22:55:00,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:55:00,059 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:55:00,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:55:00,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:55:00,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:55:00,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:55:00,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:55:00,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:55:00,060 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:55:00,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:55:00,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:55:00,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:55:00,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:55:00,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:55:00,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:55:00,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:55:00,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:55:00,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:55:00,062 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-23 22:55:00,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:55:00,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:55:00,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:55:00,063 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-23 22:55:00,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:55:00,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:55:00,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:55:00,377 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:55:00,377 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:55:00,378 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapsum5.i [2019-11-23 22:55:00,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/500380fd4/0685b12c85404b1f89b2ef5c7b446d7e/FLAGcaf5a8076 [2019-11-23 22:55:00,910 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:55:00,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapsum5.i [2019-11-23 22:55:00,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/500380fd4/0685b12c85404b1f89b2ef5c7b446d7e/FLAGcaf5a8076 [2019-11-23 22:55:01,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/500380fd4/0685b12c85404b1f89b2ef5c7b446d7e [2019-11-23 22:55:01,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:55:01,303 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:55:01,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:55:01,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:55:01,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:55:01,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b98ce2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01, skipping insertion in model container [2019-11-23 22:55:01,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:55:01,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:55:01,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:55:01,544 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:55:01,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:55:01,581 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:55:01,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01 WrapperNode [2019-11-23 22:55:01,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:55:01,583 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:55:01,583 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:55:01,583 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:55:01,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,712 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:55:01,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:55:01,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:55:01,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:55:01,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (1/1) ... [2019-11-23 22:55:01,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:55:01,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:55:01,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:55:01,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:55:01,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (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 22:55:01,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:55:01,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:55:01,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:55:01,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:55:01,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:55:01,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:55:02,304 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:55:02,305 INFO L284 CfgBuilder]: Removed 15 assume(true) statements. [2019-11-23 22:55:02,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:55:02 BoogieIcfgContainer [2019-11-23 22:55:02,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:55:02,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:55:02,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:55:02,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:55:02,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:55:01" (1/3) ... [2019-11-23 22:55:02,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4e251d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:55:02, skipping insertion in model container [2019-11-23 22:55:02,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:55:01" (2/3) ... [2019-11-23 22:55:02,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4e251d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:55:02, skipping insertion in model container [2019-11-23 22:55:02,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:55:02" (3/3) ... [2019-11-23 22:55:02,314 INFO L109 eAbstractionObserver]: Analyzing ICFG mapsum5.i [2019-11-23 22:55:02,325 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:55:02,333 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:55:02,345 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:55:02,369 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:55:02,369 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:55:02,370 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:55:02,370 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:55:02,370 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:55:02,370 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:55:02,370 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:55:02,370 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:55:02,382 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-23 22:55:02,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:55:02,388 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:02,389 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:02,389 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1047258251, now seen corresponding path program 1 times [2019-11-23 22:55:02,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:02,404 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465144970] [2019-11-23 22:55:02,404 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:02,604 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 22:55:02,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465144970] [2019-11-23 22:55:02,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:55:02,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:55:02,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446031882] [2019-11-23 22:55:02,612 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:55:02,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:55:02,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:55:02,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:55:02,629 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-11-23 22:55:02,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:55:02,683 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2019-11-23 22:55:02,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:55:02,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-23 22:55:02,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:55:02,695 INFO L225 Difference]: With dead ends: 24 [2019-11-23 22:55:02,695 INFO L226 Difference]: Without dead ends: 11 [2019-11-23 22:55:02,701 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 [2019-11-23 22:55:02,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-23 22:55:02,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-23 22:55:02,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-23 22:55:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2019-11-23 22:55:02,743 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 9 [2019-11-23 22:55:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:55:02,744 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-11-23 22:55:02,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:55:02,744 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2019-11-23 22:55:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:55:02,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:02,745 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:02,745 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:02,746 INFO L82 PathProgramCache]: Analyzing trace with hash -493215443, now seen corresponding path program 1 times [2019-11-23 22:55:02,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:02,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684827026] [2019-11-23 22:55:02,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:55:02,862 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684827026] [2019-11-23 22:55:02,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:55:02,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:55:02,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453579984] [2019-11-23 22:55:02,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:55:02,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:55:02,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:55:02,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:55:02,866 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand 4 states. [2019-11-23 22:55:02,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:55:02,925 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2019-11-23 22:55:02,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:55:02,925 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-23 22:55:02,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:55:02,926 INFO L225 Difference]: With dead ends: 20 [2019-11-23 22:55:02,926 INFO L226 Difference]: Without dead ends: 14 [2019-11-23 22:55:02,927 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 [2019-11-23 22:55:02,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-23 22:55:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-11-23 22:55:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 22:55:02,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2019-11-23 22:55:02,932 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 10 [2019-11-23 22:55:02,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:55:02,933 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2019-11-23 22:55:02,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:55:02,933 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2019-11-23 22:55:02,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:55:02,934 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:02,934 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:02,934 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:02,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:02,935 INFO L82 PathProgramCache]: Analyzing trace with hash 33126563, now seen corresponding path program 1 times [2019-11-23 22:55:02,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:02,935 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321109487] [2019-11-23 22:55:02,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:55:03,032 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321109487] [2019-11-23 22:55:03,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:55:03,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:55:03,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506082749] [2019-11-23 22:55:03,033 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:55:03,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-23 22:55:03,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:55:03,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:55:03,034 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand 4 states. [2019-11-23 22:55:03,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:55:03,086 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2019-11-23 22:55:03,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:55:03,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-23 22:55:03,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:55:03,088 INFO L225 Difference]: With dead ends: 20 [2019-11-23 22:55:03,088 INFO L226 Difference]: Without dead ends: 15 [2019-11-23 22:55:03,088 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 [2019-11-23 22:55:03,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-23 22:55:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-23 22:55:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-23 22:55:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2019-11-23 22:55:03,094 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 13 [2019-11-23 22:55:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:55:03,094 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2019-11-23 22:55:03,094 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:55:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2019-11-23 22:55:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-23 22:55:03,095 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:55:03,095 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:55:03,096 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:55:03,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:55:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 752340821, now seen corresponding path program 1 times [2019-11-23 22:55:03,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-23 22:55:03,097 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225717085] [2019-11-23 22:55:03,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:55:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:55:03,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225717085] [2019-11-23 22:55:03,179 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497293086] [2019-11-23 22:55:03,180 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 22:55:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:55:03,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:55:03,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:55:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:55:03,310 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-23 22:55:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:55:03,331 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [813713236] [2019-11-23 22:55:03,355 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2019-11-23 22:55:03,356 INFO L166 IcfgInterpreter]: Building call graph [2019-11-23 22:55:03,362 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-23 22:55:03,368 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-23 22:55:03,369 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-23 22:55:15,024 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 185 [2019-11-23 22:55:38,571 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 259 [2019-11-23 22:55:42,178 WARN L192 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 281 [2019-11-23 22:55:42,323 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 280 [2019-11-23 22:55:46,148 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 293 DAG size of output: 290 [2019-11-23 22:55:46,668 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 289 [2019-11-23 22:55:49,091 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 297 [2019-11-23 22:55:51,300 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 302 DAG size of output: 300 [2019-11-23 22:55:57,841 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 310 [2019-11-23 22:56:00,343 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 313 [2019-11-23 22:56:02,608 WARN L192 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 316 DAG size of output: 314 [2019-11-23 22:56:02,829 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 317 DAG size of output: 316 [2019-11-23 22:56:07,643 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 334 [2019-11-23 22:56:07,761 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 335 DAG size of output: 329 [2019-11-23 22:56:10,364 WARN L192 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 338 DAG size of output: 336 [2019-11-23 22:56:10,636 WARN L192 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 332 [2019-11-23 22:56:13,321 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 336 DAG size of output: 336 [2019-11-23 22:56:16,118 WARN L192 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2019-11-23 22:56:16,449 WARN L192 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 340 [2019-11-23 22:56:19,024 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 343 [2019-11-23 22:56:19,152 WARN L192 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 344 DAG size of output: 340 [2019-11-23 22:56:19,278 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 340 [2019-11-23 22:56:19,390 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 341 DAG size of output: 341 [2019-11-23 22:56:22,080 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 345 [2019-11-23 22:56:22,195 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 346 DAG size of output: 346 [2019-11-23 22:56:24,854 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 350 [2019-11-23 22:56:24,982 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 351 DAG size of output: 349 [2019-11-23 22:56:27,571 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 353 [2019-11-23 22:56:27,694 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 354 DAG size of output: 352 [2019-11-23 22:56:30,442 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 356 [2019-11-23 22:56:30,576 WARN L192 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 357 DAG size of output: 354 [2019-11-23 22:56:30,718 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 355 [2019-11-23 22:56:30,833 WARN L192 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 356 DAG size of output: 355 [2019-11-23 22:56:30,959 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 358 [2019-11-23 22:56:31,067 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 359