java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loop-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:05:32,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:05:32,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:05:32,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:05:32,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:05:32,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:05:32,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:05:32,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:05:32,835 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:05:32,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:05:32,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:05:32,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:05:32,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:05:32,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:05:32,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:05:32,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:05:32,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:05:32,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:05:32,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:05:32,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:05:32,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:05:32,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:05:32,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:05:32,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:05:32,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:05:32,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:05:32,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:05:32,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:05:32,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:05:32,910 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:05:32,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:05:32,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:05:32,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:05:32,912 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:05:32,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:05:32,913 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:05:32,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:05:32,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:05:32,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:05:32,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:05:32,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:05:32,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:05:32,914 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:05:32,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:05:32,915 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:05:32,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:05:32,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:05:32,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:05:32,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:05:32,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:05:32,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:05:32,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:05:32,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:05:32,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:05:32,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:05:32,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:05:32,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:05:32,917 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:05:33,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:05:33,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:05:33,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:05:33,199 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:05:33,200 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:05:33,200 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2019-10-15 01:05:33,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b616a953/01b2b5c05eca4f5bac3e56753c70362c/FLAG05da14f40 [2019-10-15 01:05:33,745 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:05:33,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i [2019-10-15 01:05:33,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b616a953/01b2b5c05eca4f5bac3e56753c70362c/FLAG05da14f40 [2019-10-15 01:05:34,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b616a953/01b2b5c05eca4f5bac3e56753c70362c [2019-10-15 01:05:34,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:05:34,097 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:05:34,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:34,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:05:34,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:05:34,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:34" (1/1) ... [2019-10-15 01:05:34,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5d3529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34, skipping insertion in model container [2019-10-15 01:05:34,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:05:34" (1/1) ... [2019-10-15 01:05:34,119 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:05:34,139 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:05:34,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:34,386 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:05:34,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:05:34,417 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:05:34,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34 WrapperNode [2019-10-15 01:05:34,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:05:34,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:05:34,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:05:34,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:05:34,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34" (1/1) ... [2019-10-15 01:05:34,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34" (1/1) ... [2019-10-15 01:05:34,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34" (1/1) ... [2019-10-15 01:05:34,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34" (1/1) ... [2019-10-15 01:05:34,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34" (1/1) ... [2019-10-15 01:05:34,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34" (1/1) ... [2019-10-15 01:05:34,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34" (1/1) ... [2019-10-15 01:05:34,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:05:34,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:05:34,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:05:34,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:05:34,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34" (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 [2019-10-15 01:05:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:05:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:05:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:05:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:05:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:05:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:05:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:05:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:05:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:05:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:05:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:05:34,790 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:05:34,790 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:05:34,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:34 BoogieIcfgContainer [2019-10-15 01:05:34,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:05:34,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:05:34,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:05:34,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:05:34,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:05:34" (1/3) ... [2019-10-15 01:05:34,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a08427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:34, skipping insertion in model container [2019-10-15 01:05:34,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:05:34" (2/3) ... [2019-10-15 01:05:34,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61a08427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:05:34, skipping insertion in model container [2019-10-15 01:05:34,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:05:34" (3/3) ... [2019-10-15 01:05:34,806 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2019-10-15 01:05:34,839 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:05:34,852 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:05:34,872 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:05:34,903 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:05:34,904 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:05:34,904 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:05:34,904 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:05:34,904 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:05:34,905 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:05:34,905 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:05:34,905 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:05:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-15 01:05:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:05:34,942 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:34,943 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:34,949 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:34,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2009018560, now seen corresponding path program 1 times [2019-10-15 01:05:34,986 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:34,989 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138228710] [2019-10-15 01:05:34,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:34,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:34,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:35,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138228710] [2019-10-15 01:05:35,102 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:35,102 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:05:35,102 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760481148] [2019-10-15 01:05:35,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:05:35,108 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:35,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:05:35,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:05:35,122 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-10-15 01:05:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:35,142 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-10-15 01:05:35,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:05:35,144 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:05:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:35,153 INFO L225 Difference]: With dead ends: 34 [2019-10-15 01:05:35,154 INFO L226 Difference]: Without dead ends: 16 [2019-10-15 01:05:35,157 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:05:35,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-15 01:05:35,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-15 01:05:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-15 01:05:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-15 01:05:35,200 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-10-15 01:05:35,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:35,200 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-15 01:05:35,200 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:05:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-15 01:05:35,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:05:35,201 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:35,202 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:35,202 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:35,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2019177291, now seen corresponding path program 1 times [2019-10-15 01:05:35,203 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:35,203 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14372338] [2019-10-15 01:05:35,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:35,204 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:35,204 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:35,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:35,310 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14372338] [2019-10-15 01:05:35,310 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:35,310 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:05:35,311 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446631227] [2019-10-15 01:05:35,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:05:35,313 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:35,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:05:35,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:05:35,314 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-10-15 01:05:35,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:35,397 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-10-15 01:05:35,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:05:35,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 01:05:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:35,399 INFO L225 Difference]: With dead ends: 27 [2019-10-15 01:05:35,399 INFO L226 Difference]: Without dead ends: 25 [2019-10-15 01:05:35,401 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:05:35,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-15 01:05:35,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-10-15 01:05:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-15 01:05:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-10-15 01:05:35,410 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 10 [2019-10-15 01:05:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:35,410 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-10-15 01:05:35,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:05:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-10-15 01:05:35,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:05:35,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:35,412 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:35,412 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:35,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:35,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1543015754, now seen corresponding path program 1 times [2019-10-15 01:05:35,413 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:35,413 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698519714] [2019-10-15 01:05:35,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:35,414 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:35,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:35,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698519714] [2019-10-15 01:05:35,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482462678] [2019-10-15 01:05:35,490 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 [2019-10-15 01:05:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:35,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:05:35,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:05:35,561 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:35,610 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:05:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:35,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [295384343] [2019-10-15 01:05:35,643 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 14 [2019-10-15 01:05:35,676 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:05:35,676 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:05:35,804 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:05:35,807 INFO L272 AbstractInterpreter]: Visited 13 different actions 37 times. Merged at 4 different actions 12 times. Widened at 1 different actions 1 times. Performed 64 root evaluator evaluations with a maximum evaluation depth of 4. Performed 64 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-10-15 01:05:35,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:35,812 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:05:35,812 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:05:35,813 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2019-10-15 01:05:35,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190570299] [2019-10-15 01:05:35,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:05:35,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:35,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:05:35,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:05:35,815 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2019-10-15 01:05:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:35,907 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-10-15 01:05:35,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:05:35,907 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-10-15 01:05:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:35,910 INFO L225 Difference]: With dead ends: 30 [2019-10-15 01:05:35,910 INFO L226 Difference]: Without dead ends: 26 [2019-10-15 01:05:35,911 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:05:35,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-15 01:05:35,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2019-10-15 01:05:35,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-15 01:05:35,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-15 01:05:35,917 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2019-10-15 01:05:35,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:35,918 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-15 01:05:35,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:05:35,918 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-15 01:05:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 01:05:35,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:35,920 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:36,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:36,128 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:36,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:36,128 INFO L82 PathProgramCache]: Analyzing trace with hash -595645528, now seen corresponding path program 1 times [2019-10-15 01:05:36,129 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:36,129 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262415717] [2019-10-15 01:05:36,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:36,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:36,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:36,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:36,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262415717] [2019-10-15 01:05:36,195 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:05:36,195 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:05:36,196 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635546881] [2019-10-15 01:05:36,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:05:36,197 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:36,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:05:36,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:05:36,199 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2019-10-15 01:05:36,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:36,302 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2019-10-15 01:05:36,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:05:36,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-15 01:05:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:36,304 INFO L225 Difference]: With dead ends: 31 [2019-10-15 01:05:36,304 INFO L226 Difference]: Without dead ends: 21 [2019-10-15 01:05:36,305 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:05:36,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-15 01:05:36,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-10-15 01:05:36,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-15 01:05:36,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-15 01:05:36,312 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2019-10-15 01:05:36,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:36,312 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-15 01:05:36,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:05:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-15 01:05:36,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-15 01:05:36,314 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:05:36,314 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:05:36,314 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:05:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:05:36,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1695932857, now seen corresponding path program 1 times [2019-10-15 01:05:36,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:05:36,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713402048] [2019-10-15 01:05:36,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:36,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:05:36,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:05:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:36,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713402048] [2019-10-15 01:05:36,428 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282000797] [2019-10-15 01:05:36,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:05:36,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 01:05:36,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:05:36,551 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:36,591 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:05:36,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:36,669 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:05:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:05:36,709 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:05:36,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 9] total 15 [2019-10-15 01:05:36,710 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651377694] [2019-10-15 01:05:36,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:05:36,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:05:36,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:05:36,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:05:36,713 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 6 states. [2019-10-15 01:05:36,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:05:36,784 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-15 01:05:36,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:05:36,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2019-10-15 01:05:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:05:36,785 INFO L225 Difference]: With dead ends: 19 [2019-10-15 01:05:36,785 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:05:36,786 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:05:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:05:36,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:05:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:05:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:05:36,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-10-15 01:05:36,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:05:36,789 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:05:36,789 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:05:36,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:05:36,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:05:36,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:05:36,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:05:37,110 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:05:37,110 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:05:37,110 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:05:37,110 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:05:37,110 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:05:37,111 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:05:37,111 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2019-10-15 01:05:37,111 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2019-10-15 01:05:37,111 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-15 01:05:37,111 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (and (<= 0 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) (<= 0 main_~x~0)) [2019-10-15 01:05:37,111 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2019-10-15 01:05:37,112 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2019-10-15 01:05:37,112 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2019-10-15 01:05:37,112 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 19) the Hoare annotation is: (and (<= 0 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) (<= 0 main_~x~0)) [2019-10-15 01:05:37,112 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 19) the Hoare annotation is: (and (<= 0 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) (<= 0 main_~x~0)) [2019-10-15 01:05:37,112 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 01:05:37,113 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 01:05:37,113 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:05:37,113 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 01:05:37,113 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 01:05:37,113 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:05:37,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:05:37 BoogieIcfgContainer [2019-10-15 01:05:37,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:05:37,133 INFO L168 Benchmark]: Toolchain (without parser) took 3034.98 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 103.3 MB in the beginning and 148.4 MB in the end (delta: -45.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:37,134 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 01:05:37,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.54 ms. Allocated memory is still 138.4 MB. Free memory was 103.3 MB in the beginning and 93.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:37,139 INFO L168 Benchmark]: Boogie Preprocessor took 112.56 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.8 MB in the beginning and 180.7 MB in the end (delta: -86.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:37,141 INFO L168 Benchmark]: RCFGBuilder took 261.26 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 169.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:37,142 INFO L168 Benchmark]: TraceAbstraction took 2336.86 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 169.1 MB in the beginning and 148.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:05:37,149 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory is still 121.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 319.54 ms. Allocated memory is still 138.4 MB. Free memory was 103.3 MB in the beginning and 93.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.56 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.8 MB in the beginning and 180.7 MB in the end (delta: -86.9 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 261.26 ms. Allocated memory is still 201.9 MB. Free memory was 180.7 MB in the beginning and 169.1 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2336.86 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 169.1 MB in the beginning and 148.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (0 <= m && (n <= 0 || m < n)) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 2.2s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 73 SDtfs, 40 SDslu, 156 SDs, 0 SdLazy, 103 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 47 HoareAnnotationTreeSize, 13 FomulaSimplifications, 105 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 4273 SizeOfPredicates, 8 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 8/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...