java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:35:37,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:35:37,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:35:37,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-03 02:35:37,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:35:37,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:35:37,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:35:37,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:35:37,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:35:37,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:35:37,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:35:37,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:35:37,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:35:37,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:35:37,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:35:37,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:35:37,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-03 02:35:37,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:35:37,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:35:37,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:35:37,474 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 02:35:37,489 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:35:37,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:35:37,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:35:37,490 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:35:37,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:35:37,491 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:35:37,491 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:35:37,491 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:35:37,491 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:35:37,492 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:35:37,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:35:37,492 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:35:37,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:35:37,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:35:37,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:35:37,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:35:37,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:35:37,494 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:35:37,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:35:37,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:35:37,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:35:37,494 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:35:37,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:35:37,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:35:37,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:35:37,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:35:37,495 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:35:37,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:35:37,496 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:35:37,496 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:35:37,523 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:35:37,536 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:35:37,539 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:35:37,541 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:35:37,541 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:35:37,542 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_1.c [2019-10-03 02:35:37,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a5f5154/60a501ee3fd44e17a11ee9c3f10ad6ea/FLAG5d2af8258 [2019-10-03 02:35:38,018 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:35:38,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_1.c [2019-10-03 02:35:38,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a5f5154/60a501ee3fd44e17a11ee9c3f10ad6ea/FLAG5d2af8258 [2019-10-03 02:35:38,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26a5f5154/60a501ee3fd44e17a11ee9c3f10ad6ea [2019-10-03 02:35:38,428 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:35:38,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:35:38,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:35:38,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:35:38,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:35:38,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:35:38" (1/1) ... [2019-10-03 02:35:38,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64a2e2ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38, skipping insertion in model container [2019-10-03 02:35:38,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:35:38" (1/1) ... [2019-10-03 02:35:38,445 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:35:38,461 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:35:38,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:35:38,664 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:35:38,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:35:38,691 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:35:38,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38 WrapperNode [2019-10-03 02:35:38,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:35:38,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:35:38,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:35:38,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:35:38,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38" (1/1) ... [2019-10-03 02:35:38,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38" (1/1) ... [2019-10-03 02:35:38,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38" (1/1) ... [2019-10-03 02:35:38,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38" (1/1) ... [2019-10-03 02:35:38,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38" (1/1) ... [2019-10-03 02:35:38,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38" (1/1) ... [2019-10-03 02:35:38,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38" (1/1) ... [2019-10-03 02:35:38,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:35:38,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:35:38,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:35:38,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:35:38,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38" (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 02:35:38,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:35:38,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:35:38,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-03 02:35:38,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:35:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:35:38,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 02:35:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:35:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:35:38,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:35:38,998 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:35:38,999 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-03 02:35:39,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:35:38 BoogieIcfgContainer [2019-10-03 02:35:39,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:35:39,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:35:39,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:35:39,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:35:39,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:35:38" (1/3) ... [2019-10-03 02:35:39,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778f6904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:35:39, skipping insertion in model container [2019-10-03 02:35:39,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:35:38" (2/3) ... [2019-10-03 02:35:39,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@778f6904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:35:39, skipping insertion in model container [2019-10-03 02:35:39,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:35:38" (3/3) ... [2019-10-03 02:35:39,007 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_1.c [2019-10-03 02:35:39,015 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:35:39,021 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:35:39,036 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:35:39,067 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:35:39,068 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:35:39,068 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:35:39,068 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:35:39,068 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:35:39,068 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:35:39,068 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:35:39,068 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:35:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-03 02:35:39,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-03 02:35:39,094 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:35:39,095 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:35:39,097 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:35:39,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:35:39,102 INFO L82 PathProgramCache]: Analyzing trace with hash -10313984, now seen corresponding path program 1 times [2019-10-03 02:35:39,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:35:39,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:35:39,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:35:39,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:35:39,145 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:35:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:35:39,202 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 02:35:39,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:35:39,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-03 02:35:39,204 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:35:39,208 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-03 02:35:39,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-03 02:35:39,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:35:39,223 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-10-03 02:35:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:35:39,240 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-10-03 02:35:39,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-03 02:35:39,242 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-03 02:35:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:35:39,250 INFO L225 Difference]: With dead ends: 13 [2019-10-03 02:35:39,250 INFO L226 Difference]: Without dead ends: 13 [2019-10-03 02:35:39,252 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-03 02:35:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-03 02:35:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-03 02:35:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-03 02:35:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-03 02:35:39,285 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-10-03 02:35:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:35:39,285 INFO L475 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-03 02:35:39,285 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-03 02:35:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-03 02:35:39,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-03 02:35:39,286 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:35:39,286 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:35:39,286 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:35:39,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:35:39,287 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2019-10-03 02:35:39,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:35:39,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:35:39,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:35:39,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:35:39,289 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:35:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:35:39,385 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 02:35:39,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:35:39,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 02:35:39,386 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:35:39,388 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:35:39,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:35:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:35:39,389 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2019-10-03 02:35:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:35:39,457 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2019-10-03 02:35:39,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:35:39,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-03 02:35:39,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:35:39,459 INFO L225 Difference]: With dead ends: 11 [2019-10-03 02:35:39,459 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:35:39,460 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:35:39,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:35:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:35:39,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:35:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:35:39,466 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-10-03 02:35:39,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:35:39,467 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:35:39,467 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:35:39,467 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:35:39,467 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:35:39,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:35:39 BoogieIcfgContainer [2019-10-03 02:35:39,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:35:39,481 INFO L168 Benchmark]: Toolchain (without parser) took 1047.34 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 88.2 MB in the beginning and 138.9 MB in the end (delta: -50.7 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2019-10-03 02:35:39,483 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 132.6 MB. Free memory was 106.8 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. [2019-10-03 02:35:39,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.86 ms. Allocated memory is still 132.6 MB. Free memory was 88.0 MB in the beginning and 78.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:35:39,488 INFO L168 Benchmark]: Boogie Preprocessor took 118.10 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 78.8 MB in the beginning and 176.1 MB in the end (delta: -97.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-10-03 02:35:39,490 INFO L168 Benchmark]: RCFGBuilder took 188.70 ms. Allocated memory is still 199.2 MB. Free memory was 176.1 MB in the beginning and 166.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-03 02:35:39,494 INFO L168 Benchmark]: TraceAbstraction took 474.40 ms. Allocated memory is still 199.2 MB. Free memory was 166.0 MB in the beginning and 138.9 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:35:39,503 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 132.6 MB. Free memory was 106.8 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 261.86 ms. Allocated memory is still 132.6 MB. Free memory was 88.0 MB in the beginning and 78.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.10 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 78.8 MB in the beginning and 176.1 MB in the end (delta: -97.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 188.70 ms. Allocated memory is still 199.2 MB. Free memory was 176.1 MB in the beginning and 166.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 474.40 ms. Allocated memory is still 199.2 MB. Free memory was 166.0 MB in the beginning and 138.9 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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, 18 locations, 1 error locations. SAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 19 SDs, 0 SdLazy, 7 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 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...