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/ldv-regression/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:24:22,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:24:22,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:24:22,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 02:24:22,462 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 [2019-10-03 02:24:22,480 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:24:22,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:24:22,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:24:22,482 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:24:22,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:24:22,483 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:24:22,483 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:24:22,483 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:24:22,483 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:24:22,484 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:24:22,485 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:24:22,485 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:24:22,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:24:22,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:24:22,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:24:22,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:24:22,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:24:22,486 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:24:22,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:24:22,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:24:22,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:24:22,487 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:24:22,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:24:22,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:24:22,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:24:22,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:24:22,488 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:24:22,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:24:22,489 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:24:22,489 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:24:22,545 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:24:22,572 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:24:22,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:24:22,581 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:24:22,582 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:24:22,584 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2019-10-03 02:24:22,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1871a8572/d8a54bada3b34ea19f8f1e0aee94ad74/FLAG2b13d660e [2019-10-03 02:24:23,307 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:24:23,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c [2019-10-03 02:24:23,317 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1871a8572/d8a54bada3b34ea19f8f1e0aee94ad74/FLAG2b13d660e [2019-10-03 02:24:23,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1871a8572/d8a54bada3b34ea19f8f1e0aee94ad74 [2019-10-03 02:24:23,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:24:23,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:24:23,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:24:23,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:24:23,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:24:23,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:23,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5407edcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23, skipping insertion in model container [2019-10-03 02:24:23,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:23,622 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:24:23,647 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:24:23,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:24:23,916 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:24:23,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:24:23,950 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:24:23,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23 WrapperNode [2019-10-03 02:24:23,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:24:23,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:24:23,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:24:23,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:24:24,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:24,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:24,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:24,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:24,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:24,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:24,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (1/1) ... [2019-10-03 02:24:24,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:24:24,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:24:24,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:24:24,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:24:24,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (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 [2019-10-03 02:24:24,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:24:24,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:24:24,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:24:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:24:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 02:24:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:24:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-03 02:24:24,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:24:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:24:24,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:24:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:24:24,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:24:24,430 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:24:24,430 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-03 02:24:24,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:24 BoogieIcfgContainer [2019-10-03 02:24:24,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:24:24,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:24:24,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:24:24,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:24:24,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:24:23" (1/3) ... [2019-10-03 02:24:24,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6e9a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:24:24, skipping insertion in model container [2019-10-03 02:24:24,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:24:23" (2/3) ... [2019-10-03 02:24:24,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6e9a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:24:24, skipping insertion in model container [2019-10-03 02:24:24,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:24:24" (3/3) ... [2019-10-03 02:24:24,469 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2019-10-03 02:24:24,492 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:24:24,521 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:24:24,561 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:24:24,600 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:24:24,600 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:24:24,600 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:24:24,600 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:24:24,600 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:24:24,601 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:24:24,601 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:24:24,601 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:24:24,619 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-03 02:24:24,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-03 02:24:24,630 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:24:24,631 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:24:24,634 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:24:24,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:24,640 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2019-10-03 02:24:24,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:24:24,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:24,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:24:24,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:24,697 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:24:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:24:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:24:24,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:24:24,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:24:24,904 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:24:24,911 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:24:24,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:24:24,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:24:24,938 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-10-03 02:24:25,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:24:25,057 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-10-03 02:24:25,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-03 02:24:25,061 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-03 02:24:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:24:25,080 INFO L225 Difference]: With dead ends: 25 [2019-10-03 02:24:25,080 INFO L226 Difference]: Without dead ends: 21 [2019-10-03 02:24:25,085 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:24:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-03 02:24:25,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2019-10-03 02:24:25,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-03 02:24:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-03 02:24:25,143 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-10-03 02:24:25,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:24:25,144 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-03 02:24:25,144 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:24:25,145 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-03 02:24:25,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-03 02:24:25,147 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:24:25,147 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:24:25,149 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:24:25,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:25,151 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2019-10-03 02:24:25,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:24:25,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:25,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:24:25,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:25,163 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:24:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:24:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:24:25,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:24:25,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:24:25,345 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:24:25,347 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:24:25,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:24:25,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:24:25,349 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2019-10-03 02:24:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:24:25,481 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-10-03 02:24:25,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-03 02:24:25,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-10-03 02:24:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:24:25,483 INFO L225 Difference]: With dead ends: 20 [2019-10-03 02:24:25,483 INFO L226 Difference]: Without dead ends: 14 [2019-10-03 02:24:25,485 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-03 02:24:25,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-03 02:24:25,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-03 02:24:25,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-03 02:24:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-10-03 02:24:25,489 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2019-10-03 02:24:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:24:25,490 INFO L475 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-10-03 02:24:25,490 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:24:25,490 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-10-03 02:24:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-03 02:24:25,491 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:24:25,491 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:24:25,492 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:24:25,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:24:25,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2019-10-03 02:24:25,493 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:24:25,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:25,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:24:25,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:24:25,496 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:24:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:24:25,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:24:25,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:24:25,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-03 02:24:25,640 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:24:25,641 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-03 02:24:25,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-03 02:24:25,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-03 02:24:25,642 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 7 states. [2019-10-03 02:24:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:24:25,691 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2019-10-03 02:24:25,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-03 02:24:25,691 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-10-03 02:24:25,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:24:25,692 INFO L225 Difference]: With dead ends: 12 [2019-10-03 02:24:25,692 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:24:25,693 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:24:25,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:24:25,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:24:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:24:25,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:24:25,694 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-03 02:24:25,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:24:25,694 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:24:25,695 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-03 02:24:25,695 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:24:25,695 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:24:25,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:24:25 BoogieIcfgContainer [2019-10-03 02:24:25,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:24:25,705 INFO L168 Benchmark]: Toolchain (without parser) took 2113.99 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 85.4 MB in the beginning and 105.3 MB in the end (delta: -19.9 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:25,706 INFO L168 Benchmark]: CDTParser took 1.83 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:24:25,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.80 ms. Allocated memory is still 137.9 MB. Free memory was 85.2 MB in the beginning and 75.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:25,709 INFO L168 Benchmark]: Boogie Preprocessor took 152.01 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 75.4 MB in the beginning and 176.6 MB in the end (delta: -101.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:25,710 INFO L168 Benchmark]: RCFGBuilder took 327.32 ms. Allocated memory is still 199.2 MB. Free memory was 175.9 MB in the beginning and 162.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:25,713 INFO L168 Benchmark]: TraceAbstraction took 1267.56 ms. Allocated memory is still 199.2 MB. Free memory was 161.8 MB in the beginning and 105.3 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2019-10-03 02:24:25,721 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.83 ms. Allocated memory is still 137.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.80 ms. Allocated memory is still 137.9 MB. Free memory was 85.2 MB in the beginning and 75.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 152.01 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 75.4 MB in the beginning and 176.6 MB in the end (delta: -101.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 327.32 ms. Allocated memory is still 199.2 MB. Free memory was 175.9 MB in the beginning and 162.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1267.56 ms. Allocated memory is still 199.2 MB. Free memory was 161.8 MB in the beginning and 105.3 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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 3 procedures, 18 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 31 SDtfs, 28 SDslu, 72 SDs, 0 SdLazy, 73 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...