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/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:15,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:15,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:15,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 16:30:15,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:15,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:15,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:15,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:15,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:15,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:15,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:15,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:15,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:15,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:15,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:15,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:15,957 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:30:15,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:15,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:15,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:15,967 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 16:30:15,983 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:15,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:15,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:15,984 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:15,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:15,985 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:15,985 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:15,986 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:15,986 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:15,986 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:15,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:15,987 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:15,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:15,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:15,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:15,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:15,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:15,988 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:15,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:15,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:15,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:15,989 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:15,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:15,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:15,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:15,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:15,990 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:15,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:15,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:15,991 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:16,022 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:16,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:16,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:16,043 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:16,045 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:16,046 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2019-10-02 16:30:16,116 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c395376/bd9acb45a9a849eb92d26fb1fe713d8b/FLAGd2b491343 [2019-10-02 16:30:16,574 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:16,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2019-10-02 16:30:16,581 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c395376/bd9acb45a9a849eb92d26fb1fe713d8b/FLAGd2b491343 [2019-10-02 16:30:16,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3c395376/bd9acb45a9a849eb92d26fb1fe713d8b [2019-10-02 16:30:16,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:16,988 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:16,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:16,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:16,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:16,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:16" (1/1) ... [2019-10-02 16:30:17,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421e582d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:16, skipping insertion in model container [2019-10-02 16:30:17,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:16" (1/1) ... [2019-10-02 16:30:17,009 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:17,030 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:17,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:17,260 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:17,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:17,292 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:17,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:17 WrapperNode [2019-10-02 16:30:17,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:17,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:17,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:17,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:17,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:17" (1/1) ... [2019-10-02 16:30:17,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:17" (1/1) ... [2019-10-02 16:30:17,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:17" (1/1) ... [2019-10-02 16:30:17,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:17" (1/1) ... [2019-10-02 16:30:17,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:17" (1/1) ... [2019-10-02 16:30:17,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:17" (1/1) ... [2019-10-02 16:30:17,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:17" (1/1) ... [2019-10-02 16:30:17,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:17,438 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:17,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:17,439 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:17,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:17" (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 16:30:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:17,507 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-10-02 16:30:17,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 16:30:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-02 16:30:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 16:30:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 16:30:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 16:30:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:17,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:17,782 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:17,782 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-02 16:30:17,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:17 BoogieIcfgContainer [2019-10-02 16:30:17,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:17,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:17,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:17,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:17,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:16" (1/3) ... [2019-10-02 16:30:17,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7b928e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:17, skipping insertion in model container [2019-10-02 16:30:17,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:17" (2/3) ... [2019-10-02 16:30:17,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7b928e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:17, skipping insertion in model container [2019-10-02 16:30:17,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:17" (3/3) ... [2019-10-02 16:30:17,793 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2019-10-02 16:30:17,804 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:17,812 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:17,848 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:17,904 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:17,904 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:17,904 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:17,904 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:17,905 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:17,905 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:17,905 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:17,905 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:17,922 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-02 16:30:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 16:30:17,934 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:17,935 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] [2019-10-02 16:30:17,937 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:17,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:17,943 INFO L82 PathProgramCache]: Analyzing trace with hash -850547107, now seen corresponding path program 1 times [2019-10-02 16:30:17,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:17,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:17,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:17,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:17,990 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:18,089 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 16:30:18,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:18,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:18,092 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:18,097 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:18,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:18,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:18,116 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-02 16:30:18,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:18,139 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-10-02 16:30:18,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:18,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-02 16:30:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:18,156 INFO L225 Difference]: With dead ends: 33 [2019-10-02 16:30:18,156 INFO L226 Difference]: Without dead ends: 28 [2019-10-02 16:30:18,161 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 [2019-10-02 16:30:18,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-02 16:30:18,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-02 16:30:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-02 16:30:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2019-10-02 16:30:18,219 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2019-10-02 16:30:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:18,220 INFO L475 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2019-10-02 16:30:18,220 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:18,221 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2019-10-02 16:30:18,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 16:30:18,223 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:18,223 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] [2019-10-02 16:30:18,223 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:18,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:18,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1453375688, now seen corresponding path program 1 times [2019-10-02 16:30:18,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:18,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:18,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:18,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:18,234 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:18,366 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 16:30:18,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:18,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:18,367 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:18,369 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:18,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:18,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:18,372 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2019-10-02 16:30:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:18,450 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2019-10-02 16:30:18,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:18,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-02 16:30:18,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:18,456 INFO L225 Difference]: With dead ends: 36 [2019-10-02 16:30:18,457 INFO L226 Difference]: Without dead ends: 36 [2019-10-02 16:30:18,458 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 16:30:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-02 16:30:18,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2019-10-02 16:30:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-02 16:30:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2019-10-02 16:30:18,476 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 20 [2019-10-02 16:30:18,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:18,477 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2019-10-02 16:30:18,477 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2019-10-02 16:30:18,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-02 16:30:18,478 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:18,478 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] [2019-10-02 16:30:18,479 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:18,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:18,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1976547036, now seen corresponding path program 1 times [2019-10-02 16:30:18,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:18,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:18,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:18,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:18,482 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:18,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:18,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:30:18,565 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:18,566 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:18,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:18,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:18,567 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 3 states. [2019-10-02 16:30:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:18,589 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2019-10-02 16:30:18,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:18,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-02 16:30:18,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:18,593 INFO L225 Difference]: With dead ends: 36 [2019-10-02 16:30:18,593 INFO L226 Difference]: Without dead ends: 29 [2019-10-02 16:30:18,593 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 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 16:30:18,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-02 16:30:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-02 16:30:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-02 16:30:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-10-02 16:30:18,602 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 23 [2019-10-02 16:30:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:18,603 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-10-02 16:30:18,603 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-10-02 16:30:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-02 16:30:18,605 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:18,605 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] [2019-10-02 16:30:18,605 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:18,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:18,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1583520026, now seen corresponding path program 1 times [2019-10-02 16:30:18,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:18,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:18,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:18,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:18,611 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:30:18,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:18,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:30:18,709 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:18,710 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:18,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:18,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:18,711 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 4 states. [2019-10-02 16:30:18,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:18,751 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-10-02 16:30:18,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:18,751 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-10-02 16:30:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:18,752 INFO L225 Difference]: With dead ends: 33 [2019-10-02 16:30:18,753 INFO L226 Difference]: Without dead ends: 31 [2019-10-02 16:30:18,753 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:30:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-02 16:30:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-10-02 16:30:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-02 16:30:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-10-02 16:30:18,758 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 23 [2019-10-02 16:30:18,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:18,758 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-10-02 16:30:18,758 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:18,759 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-10-02 16:30:18,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-02 16:30:18,760 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:18,760 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] [2019-10-02 16:30:18,760 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:18,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:18,761 INFO L82 PathProgramCache]: Analyzing trace with hash -596099560, now seen corresponding path program 1 times [2019-10-02 16:30:18,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:18,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:18,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:18,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:18,763 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:30:18,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:18,836 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:18,837 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2019-10-02 16:30:18,841 INFO L207 CegarAbsIntRunner]: [0], [6], [8], [10], [14], [15], [16], [20], [22], [28], [30], [35], [37], [41], [49], [52], [64], [67], [69], [75], [76], [77], [79], [80], [81] [2019-10-02 16:30:18,884 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:18,885 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:18,938 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:18,940 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 17 root evaluator evaluations with a maximum evaluation depth of 0. Performed 17 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 23 variables. [2019-10-02 16:30:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:18,943 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:18,981 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:30:18,981 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:18,983 INFO L420 sIntCurrentIteration]: We unified 24 AI predicates to 24 [2019-10-02 16:30:18,983 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:18,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:18,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2019-10-02 16:30:18,985 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:18,985 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:18,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:18,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:18,986 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 2 states. [2019-10-02 16:30:18,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:18,987 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:30:18,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:18,987 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-10-02 16:30:18,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:18,988 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:30:18,988 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:18,988 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:18,990 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-10-02 16:30:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:18,990 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:18,990 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:18,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:18,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:18 BoogieIcfgContainer [2019-10-02 16:30:18,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:18,998 INFO L168 Benchmark]: Toolchain (without parser) took 2009.61 ms. Allocated memory was 132.1 MB in the beginning and 200.8 MB in the end (delta: 68.7 MB). Free memory was 87.6 MB in the beginning and 98.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:18,999 INFO L168 Benchmark]: CDTParser took 1.15 ms. Allocated memory is still 132.1 MB. Free memory is still 106.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 16:30:19,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.09 ms. Allocated memory is still 132.1 MB. Free memory was 87.6 MB in the beginning and 77.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:19,001 INFO L168 Benchmark]: Boogie Preprocessor took 144.75 ms. Allocated memory was 132.1 MB in the beginning and 200.8 MB in the end (delta: 68.7 MB). Free memory was 77.3 MB in the beginning and 176.2 MB in the end (delta: -98.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:19,002 INFO L168 Benchmark]: RCFGBuilder took 345.86 ms. Allocated memory is still 200.8 MB. Free memory was 176.2 MB in the beginning and 159.7 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:19,003 INFO L168 Benchmark]: TraceAbstraction took 1210.04 ms. Allocated memory is still 200.8 MB. Free memory was 159.7 MB in the beginning and 98.5 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:19,007 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.15 ms. Allocated memory is still 132.1 MB. Free memory is still 106.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.09 ms. Allocated memory is still 132.1 MB. Free memory was 87.6 MB in the beginning and 77.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.75 ms. Allocated memory was 132.1 MB in the beginning and 200.8 MB in the end (delta: 68.7 MB). Free memory was 77.3 MB in the beginning and 176.2 MB in the end (delta: -98.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 345.86 ms. Allocated memory is still 200.8 MB. Free memory was 176.2 MB in the beginning and 159.7 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1210.04 ms. Allocated memory is still 200.8 MB. Free memory was 159.7 MB in the beginning and 98.5 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 5 procedures, 33 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 132 SDtfs, 14 SDslu, 104 SDs, 0 SdLazy, 27 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9583333333333334 AbsIntWeakeningRatio, 1.0416666666666667 AbsIntAvgWeakeningVarsNumRemoved, 0.25 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3272 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...