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/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:51:23,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:51:23,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:51:23,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 02:51:23,678 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 [2019-09-10 02:51:23,693 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:51:23,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:51:23,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:51:23,694 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:51:23,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:51:23,694 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:51:23,695 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:51:23,695 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:51:23,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:51:23,695 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:51:23,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:51:23,696 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:51:23,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:51:23,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:51:23,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:51:23,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:51:23,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:51:23,697 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:51:23,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:51:23,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:51:23,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:51:23,698 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:51:23,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:51:23,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:51:23,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:51:23,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:51:23,699 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:51:23,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:51:23,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:51:23,700 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:51:23,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:51:23,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:51:23,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:51:23,746 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:51:23,746 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:51:23,747 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2019-09-10 02:51:23,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5503457/ebae7b244ca54a088eea278977ba4b43/FLAG960ebca4d [2019-09-10 02:51:24,280 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:51:24,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c [2019-09-10 02:51:24,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5503457/ebae7b244ca54a088eea278977ba4b43/FLAG960ebca4d [2019-09-10 02:51:24,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de5503457/ebae7b244ca54a088eea278977ba4b43 [2019-09-10 02:51:24,669 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:51:24,670 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:51:24,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:51:24,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:51:24,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:51:24,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:51:24" (1/1) ... [2019-09-10 02:51:24,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb091df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24, skipping insertion in model container [2019-09-10 02:51:24,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:51:24" (1/1) ... [2019-09-10 02:51:24,688 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:51:24,706 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:51:24,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:51:24,903 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:51:24,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:51:24,931 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:51:24,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24 WrapperNode [2019-09-10 02:51:24,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:51:24,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:51:24,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:51:24,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:51:25,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24" (1/1) ... [2019-09-10 02:51:25,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24" (1/1) ... [2019-09-10 02:51:25,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24" (1/1) ... [2019-09-10 02:51:25,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24" (1/1) ... [2019-09-10 02:51:25,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24" (1/1) ... [2019-09-10 02:51:25,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24" (1/1) ... [2019-09-10 02:51:25,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24" (1/1) ... [2019-09-10 02:51:25,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:51:25,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:51:25,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:51:25,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:51:25,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24" (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 [2019-09-10 02:51:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:51:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:51:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2019-09-10 02:51:25,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:51:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:51:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:51:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2019-09-10 02:51:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:51:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:51:25,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:51:25,310 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:51:25,310 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 02:51:25,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:51:25 BoogieIcfgContainer [2019-09-10 02:51:25,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:51:25,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:51:25,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:51:25,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:51:25,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:51:24" (1/3) ... [2019-09-10 02:51:25,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308e3ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:51:25, skipping insertion in model container [2019-09-10 02:51:25,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:24" (2/3) ... [2019-09-10 02:51:25,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308e3ae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:51:25, skipping insertion in model container [2019-09-10 02:51:25,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:51:25" (3/3) ... [2019-09-10 02:51:25,338 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2019-09-10 02:51:25,354 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:51:25,384 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:51:25,430 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:51:25,456 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:51:25,456 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:51:25,457 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:51:25,457 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:51:25,457 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:51:25,457 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:51:25,457 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:51:25,457 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:51:25,470 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-09-10 02:51:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-10 02:51:25,480 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:25,481 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:25,483 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:25,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:25,488 INFO L82 PathProgramCache]: Analyzing trace with hash -854965079, now seen corresponding path program 1 times [2019-09-10 02:51:25,489 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:25,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:25,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:25,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:25,530 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:51:25,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:25,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-10 02:51:25,770 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:25,773 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-10 02:51:25,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-10 02:51:25,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-10 02:51:25,788 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2019-09-10 02:51:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:26,018 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-09-10 02:51:26,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:51:26,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-09-10 02:51:26,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:26,033 INFO L225 Difference]: With dead ends: 32 [2019-09-10 02:51:26,034 INFO L226 Difference]: Without dead ends: 24 [2019-09-10 02:51:26,037 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:51:26,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-09-10 02:51:26,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-09-10 02:51:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-10 02:51:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-09-10 02:51:26,099 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 15 [2019-09-10 02:51:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:26,100 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-09-10 02:51:26,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-10 02:51:26,101 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-09-10 02:51:26,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 02:51:26,105 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:26,105 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:26,106 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:26,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:26,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1632999070, now seen corresponding path program 1 times [2019-09-10 02:51:26,108 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:26,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:26,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:26,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:26,111 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:51:26,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:26,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 02:51:26,192 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:26,194 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 02:51:26,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 02:51:26,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-10 02:51:26,195 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 4 states. [2019-09-10 02:51:26,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:26,222 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2019-09-10 02:51:26,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 02:51:26,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-10 02:51:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:26,224 INFO L225 Difference]: With dead ends: 26 [2019-09-10 02:51:26,225 INFO L226 Difference]: Without dead ends: 26 [2019-09-10 02:51:26,226 INFO L628 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 [2019-09-10 02:51:26,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-09-10 02:51:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2019-09-10 02:51:26,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-09-10 02:51:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-09-10 02:51:26,234 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2019-09-10 02:51:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:26,235 INFO L475 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-09-10 02:51:26,235 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 02:51:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-09-10 02:51:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-10 02:51:26,237 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:26,238 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:26,238 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:26,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:26,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1746800232, now seen corresponding path program 1 times [2019-09-10 02:51:26,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:26,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:26,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:26,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:26,240 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:26,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:51:26,478 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:51:26,478 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:51:26,480 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2019-09-10 02:51:26,483 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [20], [23], [26], [27], [30], [32], [40], [41], [42], [43], [45], [46], [47], [48] [2019-09-10 02:51:26,528 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:51:26,528 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:51:26,800 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:51:26,803 INFO L272 AbstractInterpreter]: Visited 20 different actions 108 times. Merged at 7 different actions 46 times. Widened at 1 different actions 3 times. Performed 164 root evaluator evaluations with a maximum evaluation depth of 5. Performed 164 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 3 fixpoints after 2 different actions. Largest state had 6 variables. [2019-09-10 02:51:26,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:26,809 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:51:26,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:51:26,809 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 [2019-09-10 02:51:26,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:26,824 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:51:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:26,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-10 02:51:26,868 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:51:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:51:27,165 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:51:27,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 02:51:27,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-10 02:51:27,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:51:27,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 02:51:27,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-09-10 02:51:27,576 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 02:51:27,577 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-10 02:51:27,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-10 02:51:27,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-09-10 02:51:27,579 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 18 states. [2019-09-10 02:51:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:28,010 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2019-09-10 02:51:28,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-10 02:51:28,012 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2019-09-10 02:51:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:28,014 INFO L225 Difference]: With dead ends: 36 [2019-09-10 02:51:28,014 INFO L226 Difference]: Without dead ends: 32 [2019-09-10 02:51:28,016 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2019-09-10 02:51:28,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-10 02:51:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2019-09-10 02:51:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-09-10 02:51:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2019-09-10 02:51:28,029 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2019-09-10 02:51:28,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:28,030 INFO L475 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2019-09-10 02:51:28,030 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-10 02:51:28,030 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2019-09-10 02:51:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-09-10 02:51:28,034 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:28,034 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:28,035 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:28,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:28,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1365148867, now seen corresponding path program 1 times [2019-09-10 02:51:28,036 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:28,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:28,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:28,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:28,039 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:28,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:51:28,146 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:51:28,146 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 02:51:28,146 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2019-09-10 02:51:28,147 INFO L207 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [20], [23], [26], [27], [33], [36], [38], [40], [41], [42], [43], [45], [46], [49], [50] [2019-09-10 02:51:28,151 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 02:51:28,151 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 02:51:28,173 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-10 02:51:28,176 INFO L272 AbstractInterpreter]: Visited 17 different actions 17 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 4. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 6 variables. [2019-09-10 02:51:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:28,176 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-09-10 02:51:28,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 02:51:28,177 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 [2019-09-10 02:51:28,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:28,219 INFO L289 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2019-09-10 02:51:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:28,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-10 02:51:28,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-10 02:51:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:51:28,257 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-09-10 02:51:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 02:51:28,347 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-09-10 02:51:28,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 8 [2019-09-10 02:51:28,347 INFO L250 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2019-09-10 02:51:28,348 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:51:28,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:51:28,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:51:28,349 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 7 states. [2019-09-10 02:51:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:28,409 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-09-10 02:51:28,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-10 02:51:28,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2019-09-10 02:51:28,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:28,410 INFO L225 Difference]: With dead ends: 23 [2019-09-10 02:51:28,410 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:51:28,411 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-09-10 02:51:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:51:28,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:51:28,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:51:28,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:51:28,412 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-09-10 02:51:28,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:28,412 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:51:28,412 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:51:28,412 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:51:28,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:51:28,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:51:28 BoogieIcfgContainer [2019-09-10 02:51:28,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:51:28,421 INFO L168 Benchmark]: Toolchain (without parser) took 3749.37 ms. Allocated memory was 134.7 MB in the beginning and 254.3 MB in the end (delta: 119.5 MB). Free memory was 89.7 MB in the beginning and 201.7 MB in the end (delta: -111.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:28,422 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 134.7 MB. Free memory was 108.1 MB in the beginning and 107.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:51:28,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.92 ms. Allocated memory is still 134.7 MB. Free memory was 89.5 MB in the beginning and 80.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:28,424 INFO L168 Benchmark]: Boogie Preprocessor took 114.26 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 80.2 MB in the beginning and 178.4 MB in the end (delta: -98.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:28,424 INFO L168 Benchmark]: RCFGBuilder took 264.78 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 165.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:28,425 INFO L168 Benchmark]: TraceAbstraction took 3105.07 ms. Allocated memory was 201.3 MB in the beginning and 254.3 MB in the end (delta: 53.0 MB). Free memory was 165.7 MB in the beginning and 201.7 MB in the end (delta: -35.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:28,429 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 134.7 MB. Free memory was 108.1 MB in the beginning and 107.9 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.92 ms. Allocated memory is still 134.7 MB. Free memory was 89.5 MB in the beginning and 80.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.26 ms. Allocated memory was 134.7 MB in the beginning and 201.3 MB in the end (delta: 66.6 MB). Free memory was 80.2 MB in the beginning and 178.4 MB in the end (delta: -98.1 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 264.78 ms. Allocated memory is still 201.3 MB. Free memory was 178.4 MB in the beginning and 165.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3105.07 ms. Allocated memory was 201.3 MB in the beginning and 254.3 MB in the end (delta: 53.0 MB). Free memory was 165.7 MB in the beginning and 201.7 MB in the end (delta: -35.9 MB). Peak memory consumption was 17.0 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 83 SDtfs, 71 SDslu, 261 SDs, 0 SdLazy, 317 SolverSat, 43 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 76 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 13597 SizeOfPredicates, 12 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 12/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...