/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:27:57,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:27:57,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:27:58,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 00:27:58,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:27:58,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:27:58,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:27:58,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:27:58,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:27:58,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:27:58,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:27:58,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:27:58,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:27:58,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:27:58,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:27:58,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:27:58,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:27:58,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:27:58,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:27:58,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:27:58,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:27:58,090 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:27:58,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:27:58,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:27:58,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:27:58,092 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:27:58,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:27:58,092 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:27:58,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:27:58,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:27:58,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:27:58,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:27:58,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:27:58,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:27:58,094 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:27:58,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:27:58,094 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:27:58,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:27:58,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:27:58,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:27:58,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:27:58,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:27:58,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:27:58,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:27:58,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:27:58,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:27:58,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:27:58,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:27:58,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:27:58,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:27:58,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:27:58,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:27:58,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:27:58,400 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:27:58,401 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:27:58,401 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2019-11-07 00:27:58,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d2194dc/c0c7c8f87e9b46889dffcbe0a0963eb7/FLAG6932f3958 [2019-11-07 00:27:58,877 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:27:58,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_cut_trace.i [2019-11-07 00:27:58,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d2194dc/c0c7c8f87e9b46889dffcbe0a0963eb7/FLAG6932f3958 [2019-11-07 00:27:59,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54d2194dc/c0c7c8f87e9b46889dffcbe0a0963eb7 [2019-11-07 00:27:59,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:27:59,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:27:59,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:27:59,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:27:59,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:27:59,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:27:59" (1/1) ... [2019-11-07 00:27:59,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fc0254b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59, skipping insertion in model container [2019-11-07 00:27:59,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:27:59" (1/1) ... [2019-11-07 00:27:59,332 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:27:59,352 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:27:59,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:27:59,568 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:27:59,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:27:59,599 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:27:59,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59 WrapperNode [2019-11-07 00:27:59,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:27:59,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:27:59,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:27:59,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:27:59,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59" (1/1) ... [2019-11-07 00:27:59,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59" (1/1) ... [2019-11-07 00:27:59,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59" (1/1) ... [2019-11-07 00:27:59,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59" (1/1) ... [2019-11-07 00:27:59,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59" (1/1) ... [2019-11-07 00:27:59,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59" (1/1) ... [2019-11-07 00:27:59,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59" (1/1) ... [2019-11-07 00:27:59,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:27:59,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:27:59,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:27:59,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:27:59,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59" (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 [2019-11-07 00:27:59,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:27:59,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:27:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-11-07 00:27:59,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:27:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:27:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-11-07 00:27:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:27:59,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:27:59,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:27:59,904 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:27:59,904 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 00:27:59,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:27:59 BoogieIcfgContainer [2019-11-07 00:27:59,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:27:59,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:27:59,907 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:27:59,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:27:59,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:27:59" (1/3) ... [2019-11-07 00:27:59,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f253dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:27:59, skipping insertion in model container [2019-11-07 00:27:59,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:59" (2/3) ... [2019-11-07 00:27:59,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f253dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:27:59, skipping insertion in model container [2019-11-07 00:27:59,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:27:59" (3/3) ... [2019-11-07 00:27:59,917 INFO L109 eAbstractionObserver]: Analyzing ICFG test_cut_trace.i [2019-11-07 00:27:59,928 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:27:59,936 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:27:59,948 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:27:59,978 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:27:59,979 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:27:59,979 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:27:59,979 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:27:59,980 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:27:59,981 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:27:59,981 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:27:59,981 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:28:00,001 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-07 00:28:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-07 00:28:00,006 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:28:00,007 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:28:00,009 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:28:00,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:28:00,014 INFO L82 PathProgramCache]: Analyzing trace with hash -417355086, now seen corresponding path program 1 times [2019-11-07 00:28:00,022 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:28:00,022 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360572526] [2019-11-07 00:28:00,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:28:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:00,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:28:00,136 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360572526] [2019-11-07 00:28:00,137 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:28:00,138 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:28:00,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138969538] [2019-11-07 00:28:00,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:28:00,145 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:28:00,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:28:00,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:28:00,160 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2019-11-07 00:28:00,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:28:00,219 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-11-07 00:28:00,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:28:00,221 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-07 00:28:00,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:28:00,240 INFO L225 Difference]: With dead ends: 29 [2019-11-07 00:28:00,241 INFO L226 Difference]: Without dead ends: 11 [2019-11-07 00:28:00,248 INFO L630 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 [2019-11-07 00:28:00,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2019-11-07 00:28:00,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-11-07 00:28:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-11-07 00:28:00,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2019-11-07 00:28:00,321 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2019-11-07 00:28:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:28:00,322 INFO L462 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2019-11-07 00:28:00,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:28:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2019-11-07 00:28:00,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:28:00,324 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:28:00,324 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:28:00,324 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:28:00,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:28:00,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1648524013, now seen corresponding path program 1 times [2019-11-07 00:28:00,326 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:28:00,327 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757107486] [2019-11-07 00:28:00,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:28:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:00,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:28:00,534 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757107486] [2019-11-07 00:28:00,534 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:28:00,534 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:28:00,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826095342] [2019-11-07 00:28:00,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:28:00,537 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:28:00,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:28:00,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:28:00,540 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 4 states. [2019-11-07 00:28:00,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:28:00,592 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-11-07 00:28:00,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:28:00,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-07 00:28:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:28:00,593 INFO L225 Difference]: With dead ends: 11 [2019-11-07 00:28:00,595 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:28:00,597 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:28:00,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:28:00,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:28:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:28:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:28:00,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-11-07 00:28:00,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:28:00,600 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:28:00,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:28:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:28:00,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:28:00,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:28:00,647 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:28:00,647 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:28:00,647 INFO L443 ceAbstractionStarter]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2019-11-07 00:28:00,647 INFO L443 ceAbstractionStarter]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-07 00:28:00,648 INFO L443 ceAbstractionStarter]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2019-11-07 00:28:00,648 INFO L446 ceAbstractionStarter]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2019-11-07 00:28:00,648 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:28:00,648 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:28:00,649 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:28:00,650 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:28:00,650 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 13 20) the Hoare annotation is: true [2019-11-07 00:28:00,651 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 13 20) no Hoare annotation was computed. [2019-11-07 00:28:00,651 INFO L443 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2019-11-07 00:28:00,651 INFO L443 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-11-07 00:28:00,652 INFO L439 ceAbstractionStarter]: At program point L18-2(line 18) the Hoare annotation is: false [2019-11-07 00:28:00,652 INFO L443 ceAbstractionStarter]: For program point L18-3(line 18) no Hoare annotation was computed. [2019-11-07 00:28:00,653 INFO L439 ceAbstractionStarter]: At program point L16-2(line 16) the Hoare annotation is: false [2019-11-07 00:28:00,653 INFO L443 ceAbstractionStarter]: For program point L16-3(line 16) no Hoare annotation was computed. [2019-11-07 00:28:00,653 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 13 20) no Hoare annotation was computed. [2019-11-07 00:28:00,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:28:00 BoogieIcfgContainer [2019-11-07 00:28:00,659 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:28:00,663 INFO L168 Benchmark]: Toolchain (without parser) took 1351.19 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 103.8 MB in the beginning and 141.7 MB in the end (delta: -37.9 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:28:00,666 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-11-07 00:28:00,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.12 ms. Allocated memory is still 146.8 MB. Free memory was 103.6 MB in the beginning and 94.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-11-07 00:28:00,670 INFO L168 Benchmark]: Boogie Preprocessor took 121.89 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 94.5 MB in the beginning and 182.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 00:28:00,671 INFO L168 Benchmark]: RCFGBuilder took 183.89 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 173.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:28:00,673 INFO L168 Benchmark]: TraceAbstraction took 752.51 ms. Allocated memory is still 203.9 MB. Free memory was 173.0 MB in the beginning and 141.7 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2019-11-07 00:28:00,686 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.12 ms. Allocated memory is still 146.8 MB. Free memory was 103.6 MB in the beginning and 94.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.89 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 94.5 MB in the beginning and 182.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 183.89 ms. Allocated memory is still 203.9 MB. Free memory was 182.4 MB in the beginning and 173.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 752.51 ms. Allocated memory is still 203.9 MB. Free memory was 173.0 MB in the beginning and 141.7 MB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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, 19 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 7 SDslu, 16 SDs, 0 SdLazy, 6 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...