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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:25:08,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:25:08,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:25:08,327 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:25:08,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:25:08,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:25:08,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:25:08,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:25:08,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:25:08,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:25:08,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:25:08,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:25:08,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:25:08,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:25:08,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:25:08,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:25:08,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 13:25:08,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:25:08,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:25:08,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:25:08,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:25:08,374 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:25:08,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:25:08,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:25:08,375 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:25:08,376 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:25:08,376 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:25:08,376 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:25:08,376 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:25:08,376 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:25:08,377 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:25:08,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:25:08,377 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:25:08,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:25:08,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:25:08,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:25:08,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:25:08,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:25:08,379 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:25:08,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:25:08,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:25:08,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:25:08,379 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:25:08,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:25:08,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:25:08,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:25:08,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:25:08,380 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:25:08,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:25:08,381 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:25:08,381 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:25:08,413 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:25:08,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:25:08,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:25:08,428 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:25:08,428 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:25:08,429 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2019-09-20 13:25:08,488 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f384930a/3874cf85d16f41428e7a596371bf96ec/FLAGd55259bfe [2019-09-20 13:25:08,905 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:25:08,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2019-09-20 13:25:08,912 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f384930a/3874cf85d16f41428e7a596371bf96ec/FLAGd55259bfe [2019-09-20 13:25:09,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f384930a/3874cf85d16f41428e7a596371bf96ec [2019-09-20 13:25:09,329 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:25:09,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:25:09,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:09,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:25:09,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:25:09,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:09" (1/1) ... [2019-09-20 13:25:09,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5489f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09, skipping insertion in model container [2019-09-20 13:25:09,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:25:09" (1/1) ... [2019-09-20 13:25:09,351 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:25:09,370 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:25:09,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:09,578 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:25:09,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:25:09,606 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:25:09,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09 WrapperNode [2019-09-20 13:25:09,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:25:09,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:25:09,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:25:09,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:25:09,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09" (1/1) ... [2019-09-20 13:25:09,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09" (1/1) ... [2019-09-20 13:25:09,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09" (1/1) ... [2019-09-20 13:25:09,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09" (1/1) ... [2019-09-20 13:25:09,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09" (1/1) ... [2019-09-20 13:25:09,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09" (1/1) ... [2019-09-20 13:25:09,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09" (1/1) ... [2019-09-20 13:25:09,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:25:09,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:25:09,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:25:09,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:25:09,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09" (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 [2019-09-20 13:25:09,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:25:09,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:25:09,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:25:09,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:25:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:25:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 13:25:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:25:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:25:09,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:25:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:25:09,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:25:09,939 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:25:09,940 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 13:25:09,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:09 BoogieIcfgContainer [2019-09-20 13:25:09,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:25:09,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:25:09,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:25:09,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:25:09,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:25:09" (1/3) ... [2019-09-20 13:25:09,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439ef335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:09, skipping insertion in model container [2019-09-20 13:25:09,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:25:09" (2/3) ... [2019-09-20 13:25:09,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439ef335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:25:09, skipping insertion in model container [2019-09-20 13:25:09,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:25:09" (3/3) ... [2019-09-20 13:25:09,949 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2019-09-20 13:25:09,958 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:25:09,965 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:25:09,982 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:25:10,049 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:25:10,052 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:25:10,053 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:25:10,053 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:25:10,053 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:25:10,053 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:25:10,053 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:25:10,054 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:25:10,071 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-20 13:25:10,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 13:25:10,081 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:10,082 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:10,086 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:10,092 INFO L82 PathProgramCache]: Analyzing trace with hash 579653156, now seen corresponding path program 1 times [2019-09-20 13:25:10,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:10,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:10,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:10,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:10,151 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:10,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:10,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:25:10,216 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:10,220 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:25:10,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:25:10,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:25:10,233 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-09-20 13:25:10,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:10,250 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-20 13:25:10,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:25:10,252 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-20 13:25:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:10,262 INFO L225 Difference]: With dead ends: 19 [2019-09-20 13:25:10,262 INFO L226 Difference]: Without dead ends: 13 [2019-09-20 13:25:10,264 INFO L636 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 [2019-09-20 13:25:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-09-20 13:25:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-09-20 13:25:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-09-20 13:25:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-09-20 13:25:10,302 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-09-20 13:25:10,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:10,302 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-09-20 13:25:10,303 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:25:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-09-20 13:25:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-20 13:25:10,304 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:10,304 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:10,304 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:10,305 INFO L82 PathProgramCache]: Analyzing trace with hash 574112030, now seen corresponding path program 1 times [2019-09-20 13:25:10,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:10,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:10,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:10,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:10,307 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:10,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:25:10,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:25:10,435 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:25:10,436 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:25:10,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:25:10,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:25:10,437 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-09-20 13:25:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:10,499 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-09-20 13:25:10,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:25:10,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-20 13:25:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:10,501 INFO L225 Difference]: With dead ends: 17 [2019-09-20 13:25:10,501 INFO L226 Difference]: Without dead ends: 14 [2019-09-20 13:25:10,502 INFO L636 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 [2019-09-20 13:25:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-09-20 13:25:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-09-20 13:25:10,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-09-20 13:25:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-09-20 13:25:10,506 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2019-09-20 13:25:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:10,507 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-09-20 13:25:10,507 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:25:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-09-20 13:25:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-09-20 13:25:10,509 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:10,509 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:10,510 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:10,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:10,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1164206820, now seen corresponding path program 1 times [2019-09-20 13:25:10,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:10,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:10,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:10,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:10,516 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:10,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:10,767 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:10,768 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2019-09-20 13:25:10,770 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [14], [16], [18], [24], [27], [29], [35], [36], [37], [39] [2019-09-20 13:25:10,804 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:25:10,805 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:25:10,971 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-20 13:25:10,974 INFO L272 AbstractInterpreter]: Visited 13 different actions 48 times. Merged at 3 different actions 15 times. Widened at 1 different actions 3 times. Performed 77 root evaluator evaluations with a maximum evaluation depth of 6. Performed 77 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-09-20 13:25:10,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:10,978 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-20 13:25:10,979 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:10,979 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2019-09-20 13:25:10,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:10,995 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-20 13:25:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:11,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-20 13:25:11,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:11,188 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:11,244 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:11,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-20 13:25:11,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2019-09-20 13:25:11,454 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:25:11,454 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-20 13:25:11,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-20 13:25:11,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2019-09-20 13:25:11,456 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 15 states. [2019-09-20 13:25:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:11,645 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-20 13:25:11,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-20 13:25:11,645 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2019-09-20 13:25:11,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:11,646 INFO L225 Difference]: With dead ends: 22 [2019-09-20 13:25:11,646 INFO L226 Difference]: Without dead ends: 18 [2019-09-20 13:25:11,648 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2019-09-20 13:25:11,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-20 13:25:11,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-20 13:25:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-20 13:25:11,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-09-20 13:25:11,651 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2019-09-20 13:25:11,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:11,652 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-09-20 13:25:11,652 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-20 13:25:11,652 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-09-20 13:25:11,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-20 13:25:11,653 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:25:11,653 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:25:11,653 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:25:11,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:25:11,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2033115496, now seen corresponding path program 2 times [2019-09-20 13:25:11,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:25:11,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:11,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:25:11,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:25:11,656 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:25:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:25:11,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-20 13:25:11,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:11,871 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:25:11,872 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-09-20 13:25:11,872 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-09-20 13:25:11,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:25:11,872 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-20 13:25:11,892 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-20 13:25:11,892 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2019-09-20 13:25:11,905 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-09-20 13:25:11,905 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-20 13:25:11,907 WARN L254 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 23 conjunts are in the unsatisfiable core [2019-09-20 13:25:11,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:25:12,118 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:25:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:12,159 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-20 13:25:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:25:12,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-20 13:25:12,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 29 [2019-09-20 13:25:12,597 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-20 13:25:12,598 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-20 13:25:12,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-20 13:25:12,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2019-09-20 13:25:12,600 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 20 states. [2019-09-20 13:25:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:25:13,080 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-09-20 13:25:13,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:25:13,080 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 17 [2019-09-20 13:25:13,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:25:13,081 INFO L225 Difference]: With dead ends: 19 [2019-09-20 13:25:13,081 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:25:13,083 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=223, Invalid=1259, Unknown=0, NotChecked=0, Total=1482 [2019-09-20 13:25:13,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:25:13,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:25:13,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:25:13,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:25:13,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-09-20 13:25:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:25:13,084 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:25:13,084 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-20 13:25:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:25:13,084 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:25:13,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:25:13 BoogieIcfgContainer [2019-09-20 13:25:13,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:25:13,092 INFO L168 Benchmark]: Toolchain (without parser) took 3760.41 ms. Allocated memory was 133.7 MB in the beginning and 259.0 MB in the end (delta: 125.3 MB). Free memory was 90.0 MB in the beginning and 180.4 MB in the end (delta: -90.5 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:13,093 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 133.7 MB. Free memory was 108.0 MB in the beginning and 107.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:25:13,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.70 ms. Allocated memory is still 133.7 MB. Free memory was 89.8 MB in the beginning and 80.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:13,095 INFO L168 Benchmark]: Boogie Preprocessor took 108.34 ms. Allocated memory was 133.7 MB in the beginning and 200.8 MB in the end (delta: 67.1 MB). Free memory was 80.4 MB in the beginning and 177.7 MB in the end (delta: -97.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:13,096 INFO L168 Benchmark]: RCFGBuilder took 224.83 ms. Allocated memory is still 200.8 MB. Free memory was 177.7 MB in the beginning and 165.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:13,097 INFO L168 Benchmark]: TraceAbstraction took 3147.38 ms. Allocated memory was 200.8 MB in the beginning and 259.0 MB in the end (delta: 58.2 MB). Free memory was 165.1 MB in the beginning and 180.4 MB in the end (delta: -15.4 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:25:13,101 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 133.7 MB. Free memory was 108.0 MB in the beginning and 107.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.70 ms. Allocated memory is still 133.7 MB. Free memory was 89.8 MB in the beginning and 80.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.34 ms. Allocated memory was 133.7 MB in the beginning and 200.8 MB in the end (delta: 67.1 MB). Free memory was 80.4 MB in the beginning and 177.7 MB in the end (delta: -97.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 224.83 ms. Allocated memory is still 200.8 MB. Free memory was 177.7 MB in the beginning and 165.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3147.38 ms. Allocated memory was 200.8 MB in the beginning and 259.0 MB in the end (delta: 58.2 MB). Free memory was 165.1 MB in the beginning and 180.4 MB in the end (delta: -15.4 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 45 SDtfs, 11 SDslu, 141 SDs, 0 SdLazy, 194 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 8 QuantifiedInterpolants, 10376 SizeOfPredicates, 8 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 4/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...