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/ldv-regression/test09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 10:18:39,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 10:18:39,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 10:18:39,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 10:18:39,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 10:18:39,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 10:18:39,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 10:18:39,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 10:18:39,334 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 10:18:39,335 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 10:18:39,336 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 10:18:39,337 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-10-02 10:18:39,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 10:18:39,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 10:18:39,362 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 10:18:39,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-02 10:18:39,377 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 10:18:39,377 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 10:18:39,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 10:18:39,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 10:18:39,378 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 10:18:39,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 10:18:39,379 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 10:18:39,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 10:18:39,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 10:18:39,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 10:18:39,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 10:18:39,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 10:18:39,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 10:18:39,380 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 10:18:39,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 10:18:39,381 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 10:18:39,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 10:18:39,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 10:18:39,381 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 10:18:39,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 10:18:39,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 10:18:39,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 10:18:39,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 10:18:39,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 10:18:39,382 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 10:18:39,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 10:18:39,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 10:18:39,383 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 10:18:39,383 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 10:18:39,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 10:18:39,423 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 10:18:39,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 10:18:39,428 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 10:18:39,428 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 10:18:39,429 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test09.c [2019-10-02 10:18:39,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ed65865/dd707d35ad294105b56c2ec527b4fe37/FLAG5570e07a5 [2019-10-02 10:18:39,928 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 10:18:39,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test09.c [2019-10-02 10:18:39,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ed65865/dd707d35ad294105b56c2ec527b4fe37/FLAG5570e07a5 [2019-10-02 10:18:40,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62ed65865/dd707d35ad294105b56c2ec527b4fe37 [2019-10-02 10:18:40,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 10:18:40,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 10:18:40,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 10:18:40,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 10:18:40,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 10:18:40,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:18:40" (1/1) ... [2019-10-02 10:18:40,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff2df9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40, skipping insertion in model container [2019-10-02 10:18:40,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:18:40" (1/1) ... [2019-10-02 10:18:40,332 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 10:18:40,350 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 10:18:40,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 10:18:40,562 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 10:18:40,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 10:18:40,595 INFO L192 MainTranslator]: Completed translation [2019-10-02 10:18:40,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40 WrapperNode [2019-10-02 10:18:40,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 10:18:40,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 10:18:40,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 10:18:40,597 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 10:18:40,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40" (1/1) ... [2019-10-02 10:18:40,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40" (1/1) ... [2019-10-02 10:18:40,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40" (1/1) ... [2019-10-02 10:18:40,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40" (1/1) ... [2019-10-02 10:18:40,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40" (1/1) ... [2019-10-02 10:18:40,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40" (1/1) ... [2019-10-02 10:18:40,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40" (1/1) ... [2019-10-02 10:18:40,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 10:18:40,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 10:18:40,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 10:18:40,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 10:18:40,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 10:18:40,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 10:18:40,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 10:18:40,773 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2019-10-02 10:18:40,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 10:18:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 10:18:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure f [2019-10-02 10:18:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 10:18:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 10:18:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 10:18:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 10:18:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 10:18:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-02 10:18:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 10:18:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 10:18:40,999 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 10:18:41,000 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-02 10:18:41,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:18:41 BoogieIcfgContainer [2019-10-02 10:18:41,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 10:18:41,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 10:18:41,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 10:18:41,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 10:18:41,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:18:40" (1/3) ... [2019-10-02 10:18:41,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cdcf3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:18:41, skipping insertion in model container [2019-10-02 10:18:41,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:40" (2/3) ... [2019-10-02 10:18:41,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cdcf3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:18:41, skipping insertion in model container [2019-10-02 10:18:41,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:18:41" (3/3) ... [2019-10-02 10:18:41,011 INFO L109 eAbstractionObserver]: Analyzing ICFG test09.c [2019-10-02 10:18:41,022 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 10:18:41,030 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 10:18:41,049 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 10:18:41,081 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 10:18:41,082 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 10:18:41,082 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 10:18:41,082 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 10:18:41,082 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 10:18:41,083 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 10:18:41,083 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 10:18:41,083 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 10:18:41,083 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 10:18:41,101 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-02 10:18:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 10:18:41,108 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:18:41,109 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 10:18:41,111 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:18:41,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:18:41,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1889415219, now seen corresponding path program 1 times [2019-10-02 10:18:41,118 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:18:41,119 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:18:41,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:18:41,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:18:41,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:18:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:18:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 10:18:41,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:18:41,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 10:18:41,369 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 10:18:41,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 10:18:41,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 10:18:41,383 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 4 states. [2019-10-02 10:18:41,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:18:41,461 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2019-10-02 10:18:41,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 10:18:41,463 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-02 10:18:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:18:41,472 INFO L225 Difference]: With dead ends: 33 [2019-10-02 10:18:41,472 INFO L226 Difference]: Without dead ends: 15 [2019-10-02 10:18:41,476 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 10:18:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-02 10:18:41,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-02 10:18:41,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-02 10:18:41,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2019-10-02 10:18:41,509 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2019-10-02 10:18:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:18:41,510 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2019-10-02 10:18:41,510 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 10:18:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2019-10-02 10:18:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-02 10:18:41,511 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 10:18:41,512 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 10:18:41,512 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 10:18:41,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 10:18:41,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1918044370, now seen corresponding path program 1 times [2019-10-02 10:18:41,513 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 10:18:41,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 10:18:41,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:18:41,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 10:18:41,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 10:18:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 10:18:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 10:18:41,929 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 10:18:41,929 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-02 10:18:41,931 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 10:18:41,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 10:18:41,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-02 10:18:41,933 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 7 states. [2019-10-02 10:18:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 10:18:42,093 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2019-10-02 10:18:42,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-02 10:18:42,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-10-02 10:18:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 10:18:42,095 INFO L225 Difference]: With dead ends: 15 [2019-10-02 10:18:42,095 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 10:18:42,096 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-10-02 10:18:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 10:18:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 10:18:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 10:18:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 10:18:42,098 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-02 10:18:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 10:18:42,098 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 10:18:42,098 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 10:18:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 10:18:42,098 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 10:18:42,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 10:18:42,275 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-02 10:18:42,276 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(~p1~0.offset)| ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base)) [2019-10-02 10:18:42,276 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-02 10:18:42,276 INFO L443 ceAbstractionStarter]: For program point L9(lines 9 14) no Hoare annotation was computed. [2019-10-02 10:18:42,276 INFO L443 ceAbstractionStarter]: For program point fEXIT(lines 7 15) no Hoare annotation was computed. [2019-10-02 10:18:42,277 INFO L439 ceAbstractionStarter]: At program point fENTRY(lines 7 15) the Hoare annotation is: (or (and (= |old(~p1~0.offset)| ~p1~0.offset) (= |~#a~0.base| ~p1~0.base)) (= |~#a~0.base| |~#b~0.base|) (not (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset))) (not (= |~#a~0.offset| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |~#a~0.base|))) [2019-10-02 10:18:42,277 INFO L443 ceAbstractionStarter]: For program point fFINAL(lines 7 15) no Hoare annotation was computed. [2019-10-02 10:18:42,277 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-02 10:18:42,277 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#a~0.base|)) (= ~p2~0.offset ~p1~0.offset) (= ~p2~0.base ~p1~0.base)) [2019-10-02 10:18:42,277 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-02 10:18:42,277 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-02 10:18:42,278 INFO L439 ceAbstractionStarter]: At program point L32(lines 17 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|))) [2019-10-02 10:18:42,278 INFO L443 ceAbstractionStarter]: For program point L31(lines 31 33) no Hoare annotation was computed. [2019-10-02 10:18:42,278 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 17 39) the Hoare annotation is: (or (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|)) (and (= |old(~p1~0.offset)| ~p1~0.offset) (= ~p2~0.offset ~p1~0.offset) (= |old(~p1~0.base)| ~p1~0.base) (= ~p2~0.base ~p1~0.base))) [2019-10-02 10:18:42,278 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 17 39) no Hoare annotation was computed. [2019-10-02 10:18:42,278 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (or (and (= 1 (select (select |#memory_int| ~p2~0.base) ~p2~0.offset)) (= ~p1~0.offset |~#a~0.offset|) (= |~#a~0.base| ~p1~0.base)) (= |~#a~0.base| |~#b~0.base|) (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|))) [2019-10-02 10:18:42,279 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-10-02 10:18:42,279 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 39) no Hoare annotation was computed. [2019-10-02 10:18:42,279 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 37) no Hoare annotation was computed. [2019-10-02 10:18:42,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 10:18:42 BoogieIcfgContainer [2019-10-02 10:18:42,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 10:18:42,295 INFO L168 Benchmark]: Toolchain (without parser) took 1978.75 ms. Allocated memory was 138.9 MB in the beginning and 227.0 MB in the end (delta: 88.1 MB). Free memory was 88.5 MB in the beginning and 184.5 MB in the end (delta: -96.0 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2019-10-02 10:18:42,296 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 106.9 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 10:18:42,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.64 ms. Allocated memory is still 138.9 MB. Free memory was 88.3 MB in the beginning and 78.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-02 10:18:42,298 INFO L168 Benchmark]: Boogie Preprocessor took 28.21 ms. Allocated memory is still 138.9 MB. Free memory was 78.6 MB in the beginning and 77.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-10-02 10:18:42,299 INFO L168 Benchmark]: RCFGBuilder took 376.53 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 77.0 MB in the beginning and 165.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2019-10-02 10:18:42,300 INFO L168 Benchmark]: TraceAbstraction took 1288.45 ms. Allocated memory was 200.8 MB in the beginning and 227.0 MB in the end (delta: 26.2 MB). Free memory was 164.6 MB in the beginning and 184.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. [2019-10-02 10:18:42,304 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 106.9 MB in the beginning and 106.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.64 ms. Allocated memory is still 138.9 MB. Free memory was 88.3 MB in the beginning and 78.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.21 ms. Allocated memory is still 138.9 MB. Free memory was 78.6 MB in the beginning and 77.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 376.53 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 77.0 MB in the beginning and 165.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1288.45 ms. Allocated memory was 200.8 MB in the beginning and 227.0 MB in the end (delta: 26.2 MB). Free memory was 164.6 MB in the beginning and 184.5 MB in the end (delta: -19.9 MB). Peak memory consumption was 92.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 37]: 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: 17]: Loop Invariant Derived loop invariant: (a == b || !(\old(p2) == \old(p1))) || !(\old(p1) == \old(p2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 10 SDslu, 33 SDs, 0 SdLazy, 22 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s 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, 0.0s 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 109 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 3835 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...