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 -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 12:03:16,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 12:03:16,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 12:03:16,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-05 12:03:16,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 12:03:16,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 12:03:16,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 12:03:16,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 12:03:16,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 12:03:16,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 12:03:16,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 12:03:16,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 12:03:16,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 12:03:16,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 12:03:16,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 12:03:16,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 12:03:16,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-05 12:03:16,160 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 12:03:16,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 12:03:16,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 12:03:16,163 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 [2019-09-05 12:03:16,178 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 12:03:16,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 12:03:16,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-05 12:03:16,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-05 12:03:16,180 INFO L138 SettingsManager]: * Use SBE=true [2019-09-05 12:03:16,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 12:03:16,180 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 12:03:16,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-05 12:03:16,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 12:03:16,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 12:03:16,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 12:03:16,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 12:03:16,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 12:03:16,182 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 12:03:16,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 12:03:16,182 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-05 12:03:16,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 12:03:16,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 12:03:16,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 12:03:16,183 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-05 12:03:16,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-05 12:03:16,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 12:03:16,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 12:03:16,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 12:03:16,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-05 12:03:16,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-05 12:03:16,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 12:03:16,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 12:03:16,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-05 12:03:16,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 12:03:16,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 12:03:16,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 12:03:16,232 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 12:03:16,232 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 12:03:16,233 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2019-09-05 12:03:16,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf7253e0/2d808d2d313c45199a22b106d9e0ce2a/FLAGf3ae0b9a6 [2019-09-05 12:03:16,704 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 12:03:16,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2019-09-05 12:03:16,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf7253e0/2d808d2d313c45199a22b106d9e0ce2a/FLAGf3ae0b9a6 [2019-09-05 12:03:17,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ccf7253e0/2d808d2d313c45199a22b106d9e0ce2a [2019-09-05 12:03:17,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 12:03:17,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 12:03:17,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 12:03:17,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 12:03:17,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 12:03:17,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:03:17" (1/1) ... [2019-09-05 12:03:17,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da886a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17, skipping insertion in model container [2019-09-05 12:03:17,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 12:03:17" (1/1) ... [2019-09-05 12:03:17,164 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 12:03:17,183 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 12:03:17,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:03:17,388 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 12:03:17,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 12:03:17,417 INFO L192 MainTranslator]: Completed translation [2019-09-05 12:03:17,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17 WrapperNode [2019-09-05 12:03:17,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 12:03:17,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 12:03:17,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 12:03:17,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 12:03:17,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17" (1/1) ... [2019-09-05 12:03:17,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17" (1/1) ... [2019-09-05 12:03:17,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17" (1/1) ... [2019-09-05 12:03:17,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17" (1/1) ... [2019-09-05 12:03:17,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17" (1/1) ... [2019-09-05 12:03:17,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17" (1/1) ... [2019-09-05 12:03:17,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17" (1/1) ... [2019-09-05 12:03:17,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 12:03:17,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 12:03:17,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 12:03:17,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 12:03:17,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17" (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 [2019-09-05 12:03:17,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 12:03:17,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 12:03:17,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 12:03:17,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 12:03:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 12:03:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 12:03:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 12:03:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 12:03:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 12:03:17,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 12:03:17,766 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 12:03:17,766 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-05 12:03:17,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:03:17 BoogieIcfgContainer [2019-09-05 12:03:17,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 12:03:17,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-05 12:03:17,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-05 12:03:17,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-05 12:03:17,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.09 12:03:17" (1/3) ... [2019-09-05 12:03:17,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a01ae6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:03:17, skipping insertion in model container [2019-09-05 12:03:17,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 12:03:17" (2/3) ... [2019-09-05 12:03:17,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a01ae6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.09 12:03:17, skipping insertion in model container [2019-09-05 12:03:17,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 12:03:17" (3/3) ... [2019-09-05 12:03:17,775 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2019-09-05 12:03:17,785 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-05 12:03:17,793 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-05 12:03:17,810 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-05 12:03:17,843 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-05 12:03:17,844 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-05 12:03:17,844 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-05 12:03:17,844 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-05 12:03:17,844 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-05 12:03:17,844 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-05 12:03:17,844 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-05 12:03:17,845 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-05 12:03:17,845 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-05 12:03:17,868 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-09-05 12:03:17,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-05 12:03:17,875 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:03:17,876 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:03:17,878 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:03:17,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:03:17,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2019-09-05 12:03:17,886 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:03:17,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:03:17,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:03:17,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:03:17,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:03:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:03:18,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:03:18,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-05 12:03:18,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-05 12:03:18,096 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-05 12:03:18,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-05 12:03:18,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-05 12:03:18,114 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2019-09-05 12:03:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:03:18,154 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-09-05 12:03:18,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-05 12:03:18,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-09-05 12:03:18,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:03:18,163 INFO L225 Difference]: With dead ends: 26 [2019-09-05 12:03:18,164 INFO L226 Difference]: Without dead ends: 13 [2019-09-05 12:03:18,166 INFO L628 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 [2019-09-05 12:03:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-05 12:03:18,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-05 12:03:18,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-05 12:03:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-05 12:03:18,206 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-05 12:03:18,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:03:18,207 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-05 12:03:18,207 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-05 12:03:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-05 12:03:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-05 12:03:18,208 INFO L391 BasicCegarLoop]: Found error trace [2019-09-05 12:03:18,208 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-05 12:03:18,209 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-05 12:03:18,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-05 12:03:18,209 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2019-09-05 12:03:18,210 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-05 12:03:18,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-05 12:03:18,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:03:18,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:03:18,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-05 12:03:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:03:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-05 12:03:18,356 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-05 12:03:18,356 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-05 12:03:18,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-05 12:03:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-05 12:03:18,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-05 12:03:18,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-05 12:03:18,471 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-05 12:03:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-05 12:03:18,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-05 12:03:18,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-09-05 12:03:18,498 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-05 12:03:18,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-05 12:03:18,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-05 12:03:18,499 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2019-09-05 12:03:18,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-05 12:03:18,564 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-09-05 12:03:18,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-05 12:03:18,565 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2019-09-05 12:03:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-05 12:03:18,565 INFO L225 Difference]: With dead ends: 15 [2019-09-05 12:03:18,565 INFO L226 Difference]: Without dead ends: 0 [2019-09-05 12:03:18,567 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-05 12:03:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-05 12:03:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-05 12:03:18,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-05 12:03:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-05 12:03:18,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-09-05 12:03:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-05 12:03:18,568 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-05 12:03:18,568 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-05 12:03:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-05 12:03:18,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-05 12:03:18,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-05 12:03:18,613 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-05 12:03:18,614 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-05 12:03:18,614 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-05 12:03:18,614 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-05 12:03:18,614 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-05 12:03:18,615 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-05 12:03:18,615 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-05 12:03:18,615 INFO L439 ceAbstractionStarter]: At program point L32(lines 25 53) the Hoare annotation is: (or (<= (+ main_~main__x~0 2) main_~main__y~0) (<= (+ main_~main__x~0 50) 0)) [2019-09-05 12:03:18,615 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 8 55) the Hoare annotation is: true [2019-09-05 12:03:18,615 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 55) no Hoare annotation was computed. [2019-09-05 12:03:18,616 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-09-05 12:03:18,616 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 53) no Hoare annotation was computed. [2019-09-05 12:03:18,616 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 54) no Hoare annotation was computed. [2019-09-05 12:03:18,616 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 55) no Hoare annotation was computed. [2019-09-05 12:03:18,616 INFO L443 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2019-09-05 12:03:18,617 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-09-05 12:03:18,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.09 12:03:18 BoogieIcfgContainer [2019-09-05 12:03:18,633 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-05 12:03:18,635 INFO L168 Benchmark]: Toolchain (without parser) took 1486.98 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 86.2 MB in the beginning and 122.6 MB in the end (delta: -36.4 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2019-09-05 12:03:18,637 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 104.4 MB in the beginning and 104.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-05 12:03:18,639 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.33 ms. Allocated memory is still 138.4 MB. Free memory was 86.0 MB in the beginning and 76.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-05 12:03:18,640 INFO L168 Benchmark]: Boogie Preprocessor took 118.80 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 76.7 MB in the beginning and 176.6 MB in the end (delta: -99.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-05 12:03:18,641 INFO L168 Benchmark]: RCFGBuilder took 230.23 ms. Allocated memory is still 198.7 MB. Free memory was 176.6 MB in the beginning and 165.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-09-05 12:03:18,642 INFO L168 Benchmark]: TraceAbstraction took 864.04 ms. Allocated memory is still 198.7 MB. Free memory was 164.5 MB in the beginning and 122.6 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2019-09-05 12:03:18,649 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.4 MB. Free memory was 104.4 MB in the beginning and 104.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.33 ms. Allocated memory is still 138.4 MB. Free memory was 86.0 MB in the beginning and 76.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.80 ms. Allocated memory was 138.4 MB in the beginning and 198.7 MB in the end (delta: 60.3 MB). Free memory was 76.7 MB in the beginning and 176.6 MB in the end (delta: -99.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 230.23 ms. Allocated memory is still 198.7 MB. Free memory was 176.6 MB in the beginning and 165.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 864.04 ms. Allocated memory is still 198.7 MB. Free memory was 164.5 MB in the beginning and 122.6 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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: 25]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y || main__x + 50 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. SAFE Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 6 SDslu, 37 SDs, 0 SdLazy, 18 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 15 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 737 SizeOfPredicates, 4 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...