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/eca-rers2012/Problem14_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 20:31:58,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 20:31:58,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 20:31:58,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 20:31:58,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 20:31:58,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 20:31:58,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 20:31:58,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 20:31:58,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 20:31:58,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 20:31:58,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 20:31:58,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 20:31:58,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 20:31:58,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 20:31:58,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 20:31:58,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 20:31:58,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 20:31:58,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 20:31:58,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 20:31:58,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 20:31:58,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 20:31:58,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 20:31:58,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 20:31:58,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 20:31:58,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 20:31:58,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 20:31:58,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 20:31:58,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 20:31:58,915 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 [2019-10-02 20:31:58,931 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 20:31:58,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 20:31:58,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 20:31:58,932 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 20:31:58,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 20:31:58,933 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 20:31:58,933 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 20:31:58,933 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 20:31:58,933 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 20:31:58,934 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 20:31:58,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 20:31:58,935 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 20:31:58,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 20:31:58,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 20:31:58,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 20:31:58,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 20:31:58,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 20:31:58,936 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 20:31:58,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 20:31:58,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 20:31:58,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 20:31:58,937 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 20:31:58,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 20:31:58,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 20:31:58,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 20:31:58,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 20:31:58,938 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 20:31:58,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 20:31:58,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 20:31:58,938 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 20:31:58,984 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 20:31:58,995 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 20:31:58,999 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 20:31:59,000 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 20:31:59,001 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 20:31:59,001 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label20.c [2019-10-02 20:31:59,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5692b4ddd/a53b90da20de42848088dc93b5371bdb/FLAG0a7cd7e65 [2019-10-02 20:31:59,613 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 20:31:59,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label20.c [2019-10-02 20:31:59,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5692b4ddd/a53b90da20de42848088dc93b5371bdb/FLAG0a7cd7e65 [2019-10-02 20:31:59,881 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5692b4ddd/a53b90da20de42848088dc93b5371bdb [2019-10-02 20:31:59,892 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 20:31:59,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 20:31:59,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 20:31:59,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 20:31:59,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 20:31:59,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 08:31:59" (1/1) ... [2019-10-02 20:31:59,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7c6699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:31:59, skipping insertion in model container [2019-10-02 20:31:59,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 08:31:59" (1/1) ... [2019-10-02 20:31:59,911 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 20:31:59,959 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 20:32:00,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 20:32:00,518 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 20:32:00,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 20:32:00,736 INFO L192 MainTranslator]: Completed translation [2019-10-02 20:32:00,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:32:00 WrapperNode [2019-10-02 20:32:00,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 20:32:00,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 20:32:00,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 20:32:00,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 20:32:00,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:32:00" (1/1) ... [2019-10-02 20:32:00,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:32:00" (1/1) ... [2019-10-02 20:32:00,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:32:00" (1/1) ... [2019-10-02 20:32:00,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:32:00" (1/1) ... [2019-10-02 20:32:00,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:32:00" (1/1) ... [2019-10-02 20:32:00,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:32:00" (1/1) ... [2019-10-02 20:32:00,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:32:00" (1/1) ... [2019-10-02 20:32:00,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 20:32:00,905 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 20:32:00,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 20:32:00,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 20:32:00,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:32:00" (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 20:32:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 20:32:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 20:32:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 20:32:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 20:32:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 20:32:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 20:32:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 20:32:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 20:32:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 20:32:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 20:32:00,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 20:32:02,376 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 20:32:02,376 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 20:32:02,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 08:32:02 BoogieIcfgContainer [2019-10-02 20:32:02,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 20:32:02,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 20:32:02,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 20:32:02,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 20:32:02,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 08:31:59" (1/3) ... [2019-10-02 20:32:02,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643b6824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 08:32:02, skipping insertion in model container [2019-10-02 20:32:02,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 08:32:00" (2/3) ... [2019-10-02 20:32:02,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@643b6824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 08:32:02, skipping insertion in model container [2019-10-02 20:32:02,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 08:32:02" (3/3) ... [2019-10-02 20:32:02,389 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label20.c [2019-10-02 20:32:02,399 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 20:32:02,409 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 20:32:02,427 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 20:32:02,469 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 20:32:02,471 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 20:32:02,471 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 20:32:02,471 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 20:32:02,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 20:32:02,471 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 20:32:02,472 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 20:32:02,472 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 20:32:02,513 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2019-10-02 20:32:02,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-02 20:32:02,533 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:32:02,534 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 20:32:02,537 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:32:02,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:32:02,547 INFO L82 PathProgramCache]: Analyzing trace with hash -594798021, now seen corresponding path program 1 times [2019-10-02 20:32:02,549 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:32:02,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:32:02,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:32:02,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:32:02,616 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:32:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:32:03,029 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 20:32:03,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:32:03,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 20:32:03,032 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:32:03,040 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 20:32:03,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 20:32:03,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 20:32:03,065 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 3 states. [2019-10-02 20:32:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:32:04,363 INFO L93 Difference]: Finished difference Result 440 states and 711 transitions. [2019-10-02 20:32:04,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 20:32:04,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2019-10-02 20:32:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:32:04,400 INFO L225 Difference]: With dead ends: 440 [2019-10-02 20:32:04,400 INFO L226 Difference]: Without dead ends: 372 [2019-10-02 20:32:04,405 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 20:32:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2019-10-02 20:32:04,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2019-10-02 20:32:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-10-02 20:32:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 602 transitions. [2019-10-02 20:32:04,513 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 602 transitions. Word has length 66 [2019-10-02 20:32:04,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:32:04,513 INFO L475 AbstractCegarLoop]: Abstraction has 372 states and 602 transitions. [2019-10-02 20:32:04,514 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 20:32:04,514 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 602 transitions. [2019-10-02 20:32:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-10-02 20:32:04,521 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:32:04,521 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 20:32:04,522 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:32:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:32:04,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1833059722, now seen corresponding path program 1 times [2019-10-02 20:32:04,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:32:04,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:32:04,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:32:04,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:32:04,525 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:32:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:32:04,765 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:32:04,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:32:04,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 20:32:04,765 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:32:04,767 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 20:32:04,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 20:32:04,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 20:32:04,769 INFO L87 Difference]: Start difference. First operand 372 states and 602 transitions. Second operand 6 states. [2019-10-02 20:32:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:32:06,103 INFO L93 Difference]: Finished difference Result 570 states and 828 transitions. [2019-10-02 20:32:06,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 20:32:06,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-10-02 20:32:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:32:06,109 INFO L225 Difference]: With dead ends: 570 [2019-10-02 20:32:06,109 INFO L226 Difference]: Without dead ends: 570 [2019-10-02 20:32:06,113 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 20:32:06,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2019-10-02 20:32:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 562. [2019-10-02 20:32:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2019-10-02 20:32:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 814 transitions. [2019-10-02 20:32:06,161 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 814 transitions. Word has length 140 [2019-10-02 20:32:06,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:32:06,162 INFO L475 AbstractCegarLoop]: Abstraction has 562 states and 814 transitions. [2019-10-02 20:32:06,162 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 20:32:06,162 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 814 transitions. [2019-10-02 20:32:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-02 20:32:06,173 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 20:32:06,174 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 20:32:06,174 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 20:32:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 20:32:06,174 INFO L82 PathProgramCache]: Analyzing trace with hash 983506601, now seen corresponding path program 1 times [2019-10-02 20:32:06,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 20:32:06,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:32:06,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 20:32:06,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 20:32:06,178 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 20:32:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 20:32:06,398 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 20:32:06,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 20:32:06,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 20:32:06,399 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 20:32:06,399 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 20:32:06,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 20:32:06,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 20:32:06,400 INFO L87 Difference]: Start difference. First operand 562 states and 814 transitions. Second operand 4 states. [2019-10-02 20:32:08,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 20:32:08,130 INFO L93 Difference]: Finished difference Result 1476 states and 2048 transitions. [2019-10-02 20:32:08,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 20:32:08,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2019-10-02 20:32:08,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 20:32:08,133 INFO L225 Difference]: With dead ends: 1476 [2019-10-02 20:32:08,133 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 20:32:08,133 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 20:32:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 20:32:08,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 20:32:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 20:32:08,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 20:32:08,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 149 [2019-10-02 20:32:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 20:32:08,135 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 20:32:08,135 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 20:32:08,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 20:32:08,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 20:32:08,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 08:32:08 BoogieIcfgContainer [2019-10-02 20:32:08,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 20:32:08,144 INFO L168 Benchmark]: Toolchain (without parser) took 8249.48 ms. Allocated memory was 141.0 MB in the beginning and 312.0 MB in the end (delta: 170.9 MB). Free memory was 86.2 MB in the beginning and 146.3 MB in the end (delta: -60.1 MB). Peak memory consumption was 110.9 MB. Max. memory is 7.1 GB. [2019-10-02 20:32:08,145 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory is still 106.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 20:32:08,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 842.69 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 86.2 MB in the beginning and 154.2 MB in the end (delta: -68.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2019-10-02 20:32:08,147 INFO L168 Benchmark]: Boogie Preprocessor took 166.51 ms. Allocated memory is still 201.3 MB. Free memory was 154.2 MB in the beginning and 148.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2019-10-02 20:32:08,148 INFO L168 Benchmark]: RCFGBuilder took 1473.75 ms. Allocated memory was 201.3 MB in the beginning and 228.6 MB in the end (delta: 27.3 MB). Free memory was 148.8 MB in the beginning and 142.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. [2019-10-02 20:32:08,149 INFO L168 Benchmark]: TraceAbstraction took 5761.56 ms. Allocated memory was 228.6 MB in the beginning and 312.0 MB in the end (delta: 83.4 MB). Free memory was 141.1 MB in the beginning and 146.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. [2019-10-02 20:32:08,153 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.0 MB. Free memory is still 106.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 842.69 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 86.2 MB in the beginning and 154.2 MB in the end (delta: -68.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 166.51 ms. Allocated memory is still 201.3 MB. Free memory was 154.2 MB in the beginning and 148.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1473.75 ms. Allocated memory was 201.3 MB in the beginning and 228.6 MB in the end (delta: 27.3 MB). Free memory was 148.8 MB in the beginning and 142.7 MB in the end (delta: 6.1 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5761.56 ms. Allocated memory was 228.6 MB in the beginning and 312.0 MB in the end (delta: 83.4 MB). Free memory was 141.1 MB in the beginning and 146.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 78.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 184]: 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, 254 locations, 1 error locations. SAFE Result, 5.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 4.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 328 SDtfs, 1022 SDslu, 77 SDs, 0 SdLazy, 2615 SolverSat, 733 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=562occurred in iteration=2, 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 355 NumberOfCodeBlocks, 355 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 107314 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 118/118 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...