/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/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/array-examples/standard_find_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:43,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:43,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:43,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-06 22:26:43,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:43,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:43,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:43,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:43,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:43,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:43,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:43,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:43,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:43,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:43,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:43,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:43,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:43,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:43,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:43,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:43,855 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 [2019-11-06 22:26:43,869 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:43,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:43,870 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:43,871 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:43,871 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:43,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:43,871 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:43,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:43,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:43,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:43,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:43,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:43,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:43,873 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:43,873 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:43,873 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:43,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:43,873 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:43,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:43,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:43,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:43,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:43,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:43,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:43,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:43,875 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:43,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:43,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:43,876 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 [2019-11-06 22:26:44,178 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:44,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:44,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:44,202 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:44,202 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:44,203 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_find_ground-1.i [2019-11-06 22:26:44,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a2aac31c/4c1a904711524a76bb4e2babc4b77fcb/FLAG98d196341 [2019-11-06 22:26:44,767 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:44,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_find_ground-1.i [2019-11-06 22:26:44,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a2aac31c/4c1a904711524a76bb4e2babc4b77fcb/FLAG98d196341 [2019-11-06 22:26:45,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a2aac31c/4c1a904711524a76bb4e2babc4b77fcb [2019-11-06 22:26:45,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:45,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:45,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:45,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:45,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:45,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:45" (1/1) ... [2019-11-06 22:26:45,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13827f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45, skipping insertion in model container [2019-11-06 22:26:45,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:45" (1/1) ... [2019-11-06 22:26:45,133 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:45,151 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:45,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:45,339 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:45,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:45,374 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:45,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45 WrapperNode [2019-11-06 22:26:45,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:45,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:45,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:45,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:45,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45" (1/1) ... [2019-11-06 22:26:45,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45" (1/1) ... [2019-11-06 22:26:45,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45" (1/1) ... [2019-11-06 22:26:45,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45" (1/1) ... [2019-11-06 22:26:45,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45" (1/1) ... [2019-11-06 22:26:45,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45" (1/1) ... [2019-11-06 22:26:45,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45" (1/1) ... [2019-11-06 22:26:45,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:45,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:45,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:45,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:45,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45" (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 [2019-11-06 22:26:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:45,551 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:45,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:26:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:45,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:45,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:45,826 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:45,826 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 22:26:45,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:45 BoogieIcfgContainer [2019-11-06 22:26:45,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:45,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:45,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:45,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:45,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:45" (1/3) ... [2019-11-06 22:26:45,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662ec9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:45, skipping insertion in model container [2019-11-06 22:26:45,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:45" (2/3) ... [2019-11-06 22:26:45,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662ec9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:45, skipping insertion in model container [2019-11-06 22:26:45,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:45" (3/3) ... [2019-11-06 22:26:45,848 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_find_ground-1.i [2019-11-06 22:26:45,856 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:45,863 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:45,874 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:45,899 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:45,899 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:45,900 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:45,900 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:45,900 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:45,900 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:45,900 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:45,900 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:45,918 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-06 22:26:45,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-06 22:26:45,923 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:45,924 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:45,926 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:45,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:45,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1063635089, now seen corresponding path program 1 times [2019-11-06 22:26:45,938 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:45,938 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132166252] [2019-11-06 22:26:45,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:46,068 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132166252] [2019-11-06 22:26:46,068 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:46,069 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:46,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687053455] [2019-11-06 22:26:46,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:46,075 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:46,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:46,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:46,093 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-11-06 22:26:46,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:46,118 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2019-11-06 22:26:46,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:46,120 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-11-06 22:26:46,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:46,128 INFO L225 Difference]: With dead ends: 46 [2019-11-06 22:26:46,128 INFO L226 Difference]: Without dead ends: 22 [2019-11-06 22:26:46,132 INFO L630 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 [2019-11-06 22:26:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-06 22:26:46,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-06 22:26:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-06 22:26:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-06 22:26:46,171 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 14 [2019-11-06 22:26:46,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:46,172 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-06 22:26:46,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-06 22:26:46,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:26:46,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:46,176 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:46,177 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:46,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:46,178 INFO L82 PathProgramCache]: Analyzing trace with hash -977598642, now seen corresponding path program 1 times [2019-11-06 22:26:46,179 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:46,179 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614603288] [2019-11-06 22:26:46,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:46,254 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614603288] [2019-11-06 22:26:46,254 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:46,255 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:46,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577602449] [2019-11-06 22:26:46,257 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:46,257 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:46,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:46,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:46,258 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 3 states. [2019-11-06 22:26:46,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:46,285 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-06 22:26:46,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:46,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-06 22:26:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:46,287 INFO L225 Difference]: With dead ends: 38 [2019-11-06 22:26:46,287 INFO L226 Difference]: Without dead ends: 24 [2019-11-06 22:26:46,289 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 [2019-11-06 22:26:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-06 22:26:46,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-11-06 22:26:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-06 22:26:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-06 22:26:46,295 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 16 [2019-11-06 22:26:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:46,295 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-06 22:26:46,295 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-06 22:26:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 22:26:46,296 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:46,297 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:46,297 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:46,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:46,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1311771152, now seen corresponding path program 1 times [2019-11-06 22:26:46,298 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:46,298 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753623301] [2019-11-06 22:26:46,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:46,374 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753623301] [2019-11-06 22:26:46,374 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:46,375 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:26:46,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369854849] [2019-11-06 22:26:46,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:26:46,376 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:46,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:46,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:26:46,377 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2019-11-06 22:26:46,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:46,407 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2019-11-06 22:26:46,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:26:46,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-06 22:26:46,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:46,409 INFO L225 Difference]: With dead ends: 38 [2019-11-06 22:26:46,409 INFO L226 Difference]: Without dead ends: 26 [2019-11-06 22:26:46,409 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 [2019-11-06 22:26:46,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-06 22:26:46,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-06 22:26:46,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-06 22:26:46,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-06 22:26:46,417 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 18 [2019-11-06 22:26:46,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:46,417 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-06 22:26:46,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:26:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-06 22:26:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-06 22:26:46,418 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:46,418 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:46,419 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:46,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:46,419 INFO L82 PathProgramCache]: Analyzing trace with hash 605671840, now seen corresponding path program 1 times [2019-11-06 22:26:46,420 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:46,420 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226504237] [2019-11-06 22:26:46,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:46,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:26:46,480 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226504237] [2019-11-06 22:26:46,480 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995169125] [2019-11-06 22:26:46,481 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 [2019-11-06 22:26:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:46,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:26:46,545 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:46,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:26:46,576 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:46,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-06 22:26:46,612 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1082764841] [2019-11-06 22:26:46,618 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 22 [2019-11-06 22:26:46,685 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:46,685 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:46,738 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:46,739 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 24 variables. [2019-11-06 22:26:46,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:46,746 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:46,792 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:26:46,792 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:46,800 INFO L553 sIntCurrentIteration]: We unified 20 AI predicates to 20 [2019-11-06 22:26:46,800 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:46,801 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:46,801 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-06 22:26:46,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256165472] [2019-11-06 22:26:46,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:46,803 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:46,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:46,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:46,804 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 2 states. [2019-11-06 22:26:46,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:46,806 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-11-06 22:26:46,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:46,807 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2019-11-06 22:26:46,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:46,807 INFO L225 Difference]: With dead ends: 26 [2019-11-06 22:26:46,807 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:26:46,809 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:46,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:26:46,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:26:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:26:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:26:46,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-11-06 22:26:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:46,811 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:26:46,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:46,811 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:26:46,811 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:26:47,016 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:47,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:26:47,075 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:47,075 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:47,075 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:47,075 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:47,075 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:26:47,076 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:47,076 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:47,076 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 21) no Hoare annotation was computed. [2019-11-06 22:26:47,076 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 19) no Hoare annotation was computed. [2019-11-06 22:26:47,076 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 19) the Hoare annotation is: (and (= main_~x~0 0) (= main_~i~0 0)) [2019-11-06 22:26:47,076 INFO L443 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-06 22:26:47,076 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 17 19) no Hoare annotation was computed. [2019-11-06 22:26:47,077 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 21) no Hoare annotation was computed. [2019-11-06 22:26:47,077 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2019-11-06 22:26:47,077 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 4 21) no Hoare annotation was computed. [2019-11-06 22:26:47,077 INFO L443 ceAbstractionStarter]: For program point L13-5(lines 13 15) no Hoare annotation was computed. [2019-11-06 22:26:47,077 INFO L443 ceAbstractionStarter]: For program point L9-2(lines 9 11) no Hoare annotation was computed. [2019-11-06 22:26:47,077 INFO L439 ceAbstractionStarter]: At program point L9-3(lines 9 11) the Hoare annotation is: false [2019-11-06 22:26:47,078 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 21) the Hoare annotation is: true [2019-11-06 22:26:47,078 INFO L439 ceAbstractionStarter]: At program point L18(line 18) the Hoare annotation is: false [2019-11-06 22:26:47,078 INFO L443 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-11-06 22:26:47,078 INFO L443 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2019-11-06 22:26:47,078 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2019-11-06 22:26:47,078 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2019-11-06 22:26:47,078 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2019-11-06 22:26:47,079 INFO L443 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2019-11-06 22:26:47,079 INFO L443 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2019-11-06 22:26:47,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:47 BoogieIcfgContainer [2019-11-06 22:26:47,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:26:47,093 INFO L168 Benchmark]: Toolchain (without parser) took 1973.00 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 102.1 MB in the beginning and 100.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:47,095 INFO L168 Benchmark]: CDTParser took 1.30 ms. Allocated memory is still 145.8 MB. Free memory is still 120.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:26:47,096 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.44 ms. Allocated memory is still 145.8 MB. Free memory was 102.1 MB in the beginning and 92.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:47,098 INFO L168 Benchmark]: Boogie Preprocessor took 114.52 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.1 MB in the beginning and 180.6 MB in the end (delta: -88.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:47,104 INFO L168 Benchmark]: RCFGBuilder took 337.77 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 165.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:47,105 INFO L168 Benchmark]: TraceAbstraction took 1249.25 ms. Allocated memory is still 202.9 MB. Free memory was 165.0 MB in the beginning and 100.7 MB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:47,112 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.30 ms. Allocated memory is still 145.8 MB. Free memory is still 120.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.44 ms. Allocated memory is still 145.8 MB. Free memory was 102.1 MB in the beginning and 92.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.52 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.1 MB in the beginning and 180.6 MB in the end (delta: -88.5 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.77 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 165.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1249.25 ms. Allocated memory is still 202.9 MB. Free memory was 165.0 MB in the beginning and 100.7 MB in the end (delta: 64.3 MB). Peak memory consumption was 64.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 9]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x == 0 && i == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 3 SDslu, 43 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, 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, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 14 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 2613 SizeOfPredicates, 1 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 128, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9375, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9, AVG_WEAKENED_CONJUNCTS: 0.3, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...