/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/loops/sum03-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:27:45,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:27:45,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:27:45,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:27:45,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:27:45,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:27:45,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:27:45,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:27:45,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:27:45,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:27:45,877 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:27:45,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:27:45,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:27:45,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:27:45,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:27:45,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:27:45,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:27:45,883 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:27:45,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:27:45,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:27:45,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:27:45,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:27:45,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:27:45,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:27:45,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:27:45,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:27:45,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:27:45,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:27:45,904 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 04:27:45,919 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:27:45,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:27:45,920 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:27:45,920 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:27:45,920 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:27:45,921 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:27:45,921 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:27:45,921 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:27:45,921 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:27:45,922 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:27:45,922 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:27:45,922 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:27:45,922 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:27:45,922 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:27:45,923 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:27:45,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:27:45,923 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:27:45,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:27:45,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:27:45,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:27:45,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:27:45,924 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:27:45,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:27:45,925 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:27:45,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:27:45,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:27:45,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:27:45,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:27:45,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:27:45,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:27:45,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:27:45,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:27:45,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:27:45,927 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:27:45,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:27:45,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:27:45,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:27:45,927 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:27:46,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:27:46,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:27:46,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:27:46,210 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:27:46,211 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:27:46,211 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum03-1.i [2019-11-24 04:27:46,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21eb1b980/02bf2e5b8a93444d95e4b60cebfa9b90/FLAG99385315a [2019-11-24 04:27:46,733 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:27:46,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum03-1.i [2019-11-24 04:27:46,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21eb1b980/02bf2e5b8a93444d95e4b60cebfa9b90/FLAG99385315a [2019-11-24 04:27:47,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21eb1b980/02bf2e5b8a93444d95e4b60cebfa9b90 [2019-11-24 04:27:47,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:27:47,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:27:47,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:27:47,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:27:47,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:27:47,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@127afcab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47, skipping insertion in model container [2019-11-24 04:27:47,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:27:47,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:27:47,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:27:47,381 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:27:47,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:27:47,409 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:27:47,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47 WrapperNode [2019-11-24 04:27:47,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:27:47,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:27:47,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:27:47,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:27:47,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,423 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:27:47,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:27:47,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:27:47,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:27:47,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (1/1) ... [2019-11-24 04:27:47,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:27:47,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:27:47,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:27:47,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:27:47,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (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 04:27:47,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:27:47,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:27:47,823 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:27:47,823 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-24 04:27:47,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:27:47 BoogieIcfgContainer [2019-11-24 04:27:47,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:27:47,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:27:47,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:27:47,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:27:47,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:27:47" (1/3) ... [2019-11-24 04:27:47,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38743651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:27:47, skipping insertion in model container [2019-11-24 04:27:47,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:27:47" (2/3) ... [2019-11-24 04:27:47,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38743651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:27:47, skipping insertion in model container [2019-11-24 04:27:47,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:27:47" (3/3) ... [2019-11-24 04:27:47,832 INFO L109 eAbstractionObserver]: Analyzing ICFG sum03-1.i [2019-11-24 04:27:47,849 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:27:47,858 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 04:27:47,872 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 04:27:47,902 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:27:47,902 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:27:47,902 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:27:47,903 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:27:47,903 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:27:47,903 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:27:47,903 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:27:47,903 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:27:47,919 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-11-24 04:27:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 04:27:47,925 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:47,926 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 04:27:47,927 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:47,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:47,933 INFO L82 PathProgramCache]: Analyzing trace with hash 990472, now seen corresponding path program 1 times [2019-11-24 04:27:47,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:47,944 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096592291] [2019-11-24 04:27:47,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:48,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:48,247 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 04:27:48,248 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096592291] [2019-11-24 04:27:48,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:27:48,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 04:27:48,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672644502] [2019-11-24 04:27:48,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 04:27:48,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:27:48,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 04:27:48,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:27:48,277 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-11-24 04:27:48,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:27:48,317 INFO L93 Difference]: Finished difference Result 12 states and 17 transitions. [2019-11-24 04:27:48,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 04:27:48,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-24 04:27:48,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:27:48,327 INFO L225 Difference]: With dead ends: 12 [2019-11-24 04:27:48,328 INFO L226 Difference]: Without dead ends: 7 [2019-11-24 04:27:48,333 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 04:27:48,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-24 04:27:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-24 04:27:48,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-24 04:27:48,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-24 04:27:48,367 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-11-24 04:27:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:27:48,367 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-24 04:27:48,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 04:27:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-24 04:27:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:27:48,376 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:27:48,377 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-11-24 04:27:48,377 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:27:48,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:27:48,378 INFO L82 PathProgramCache]: Analyzing trace with hash 952008565, now seen corresponding path program 1 times [2019-11-24 04:27:48,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:27:48,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329649385] [2019-11-24 04:27:48,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:27:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:50,746 WARN L192 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2019-11-24 04:27:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:27:50,756 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329649385] [2019-11-24 04:27:50,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750237986] [2019-11-24 04:27:50,757 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 04:27:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:27:50,801 WARN L253 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-24 04:27:50,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:27:50,833 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:27:50,954 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:27:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:27:50,981 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:27:50,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:27:53,372 WARN L192 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 22 [2019-11-24 04:27:55,482 WARN L192 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 25 [2019-11-24 04:27:55,487 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:27:55,488 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:27:55,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:27:55,492 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:27:55,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:27:57,516 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse14 (+ c_ULTIMATE.start_main_~sn~0 2)) (.cse15 (* c_ULTIMATE.start_main_~x~0 2))) (let ((.cse1 (mod (+ .cse15 4) 4294967296)) (.cse5 (= c_ULTIMATE.start_main_~sn~0 0)) (.cse2 (mod c_ULTIMATE.start_main_~sn~0 4294967296)) (.cse11 (mod c_ULTIMATE.start_main_~x~0 4294967296)) (.cse13 (mod (+ .cse15 2) 4294967296)) (.cse12 (mod .cse14 4294967296)) (.cse8 (= 0 .cse14))) (let ((.cse0 (mod (+ c_ULTIMATE.start_main_~x~0 1) 4294967296)) (.cse6 (and (not (= .cse13 .cse12)) (not .cse8))) (.cse9 (<= 10 .cse11)) (.cse3 (and (not .cse5) (not (= .cse13 .cse2)))) (.cse7 (= .cse12 .cse1)) (.cse4 (< .cse11 10))) (and (or (< .cse0 10) (and (or (= .cse1 .cse2) .cse3 .cse4 .cse5) (or .cse6 .cse7 .cse8 .cse9))) (or (<= 10 .cse0) (and (let ((.cse10 (+ c_ULTIMATE.start_main_~sn~0 4))) (or .cse6 (= 0 .cse10) (= (mod .cse10 4294967296) .cse1) .cse9)) (or .cse3 .cse7 .cse4 .cse8))))))) is different from false [2019-11-24 04:27:59,540 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse14 (+ c_ULTIMATE.start_main_~sn~0 2)) (.cse15 (* c_ULTIMATE.start_main_~x~0 2))) (let ((.cse1 (mod (+ .cse15 4) 4294967296)) (.cse5 (= c_ULTIMATE.start_main_~sn~0 0)) (.cse2 (mod c_ULTIMATE.start_main_~sn~0 4294967296)) (.cse11 (mod c_ULTIMATE.start_main_~x~0 4294967296)) (.cse13 (mod (+ .cse15 2) 4294967296)) (.cse12 (mod .cse14 4294967296)) (.cse8 (= 0 .cse14))) (let ((.cse0 (mod (+ c_ULTIMATE.start_main_~x~0 1) 4294967296)) (.cse6 (and (not (= .cse13 .cse12)) (not .cse8))) (.cse9 (<= 10 .cse11)) (.cse3 (and (not .cse5) (not (= .cse13 .cse2)))) (.cse7 (= .cse12 .cse1)) (.cse4 (< .cse11 10))) (and (or (< .cse0 10) (and (or (= .cse1 .cse2) .cse3 .cse4 .cse5) (or .cse6 .cse7 .cse8 .cse9))) (or (<= 10 .cse0) (and (let ((.cse10 (+ c_ULTIMATE.start_main_~sn~0 4))) (or .cse6 (= 0 .cse10) (= (mod .cse10 4294967296) .cse1) .cse9)) (or .cse3 .cse7 .cse4 .cse8))))))) is different from true [2019-11-24 04:27:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2019-11-24 04:27:59,542 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1815409290] [2019-11-24 04:27:59,567 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-11-24 04:27:59,567 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:27:59,573 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:27:59,581 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:27:59,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:28:00,323 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 270 [2019-11-24 04:28:00,598 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 270 [2019-11-24 04:28:00,957 WARN L192 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-24 04:28:02,093 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 485 DAG size of output: 484 [2019-11-24 04:28:02,765 WARN L192 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 803 [2019-11-24 04:28:04,646 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7176 conjuctions. This might take some time... [2019-11-24 04:28:09,115 WARN L192 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 804 DAG size of output: 803 [2019-11-24 04:28:10,220 WARN L192 SmtUtils]: Spent 974.00 ms on a formula simplification that was a NOOP. DAG size: 1328 [2019-11-24 04:28:11,332 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 7188 conjuctions. This might take some time... [2019-11-24 04:28:14,950 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 6786 conjuctions. This might take some time... [2019-11-24 04:28:26,986 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 5101 conjuctions. This might take some time... [2019-11-24 04:28:29,034 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 29928 conjuctions. This might take some time...