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/Problem01_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 06:27:57,085 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 06:27:57,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 06:27:57,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-09 06:27:57,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 06:27:57,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 06:27:57,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 06:27:57,146 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 [2019-09-09 06:27:57,173 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 06:27:57,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 06:27:57,175 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 06:27:57,175 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 06:27:57,176 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 06:27:57,176 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 06:27:57,176 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 06:27:57,176 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 06:27:57,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 06:27:57,177 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 06:27:57,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 06:27:57,179 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 06:27:57,179 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 06:27:57,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 06:27:57,180 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 06:27:57,180 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 06:27:57,180 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 06:27:57,180 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 06:27:57,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 06:27:57,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 06:27:57,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 06:27:57,182 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 06:27:57,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 06:27:57,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 06:27:57,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 06:27:57,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 06:27:57,183 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 06:27:57,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 06:27:57,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 06:27:57,183 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 06:27:57,221 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 06:27:57,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 06:27:57,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 06:27:57,239 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 06:27:57,240 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 06:27:57,240 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label49.c [2019-09-09 06:27:57,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c033cf5d/e50c986dfc02416eabc7ff594f16a3dd/FLAGf1b962908 [2019-09-09 06:27:57,900 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 06:27:57,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label49.c [2019-09-09 06:27:57,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c033cf5d/e50c986dfc02416eabc7ff594f16a3dd/FLAGf1b962908 [2019-09-09 06:27:58,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c033cf5d/e50c986dfc02416eabc7ff594f16a3dd [2019-09-09 06:27:58,168 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 06:27:58,169 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 06:27:58,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 06:27:58,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 06:27:58,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 06:27:58,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:27:58" (1/1) ... [2019-09-09 06:27:58,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df8f01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58, skipping insertion in model container [2019-09-09 06:27:58,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 06:27:58" (1/1) ... [2019-09-09 06:27:58,186 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 06:27:58,239 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 06:27:58,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:27:58,750 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 06:27:58,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 06:27:58,936 INFO L192 MainTranslator]: Completed translation [2019-09-09 06:27:58,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58 WrapperNode [2019-09-09 06:27:58,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 06:27:58,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 06:27:58,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 06:27:58,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 06:27:58,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58" (1/1) ... [2019-09-09 06:27:58,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58" (1/1) ... [2019-09-09 06:27:59,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58" (1/1) ... [2019-09-09 06:27:59,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58" (1/1) ... [2019-09-09 06:27:59,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58" (1/1) ... [2019-09-09 06:27:59,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58" (1/1) ... [2019-09-09 06:27:59,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58" (1/1) ... [2019-09-09 06:27:59,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 06:27:59,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 06:27:59,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 06:27:59,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 06:27:59,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58" (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 [2019-09-09 06:27:59,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 06:27:59,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 06:27:59,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 06:27:59,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 06:27:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 06:27:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 06:27:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 06:27:59,171 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 06:27:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 06:27:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 06:27:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 06:28:00,325 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 06:28:00,325 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 06:28:00,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:28:00 BoogieIcfgContainer [2019-09-09 06:28:00,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 06:28:00,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 06:28:00,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 06:28:00,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 06:28:00,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 06:27:58" (1/3) ... [2019-09-09 06:28:00,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76324336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:28:00, skipping insertion in model container [2019-09-09 06:28:00,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 06:27:58" (2/3) ... [2019-09-09 06:28:00,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76324336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 06:28:00, skipping insertion in model container [2019-09-09 06:28:00,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 06:28:00" (3/3) ... [2019-09-09 06:28:00,336 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label49.c [2019-09-09 06:28:00,346 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 06:28:00,355 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 06:28:00,372 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 06:28:00,400 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 06:28:00,400 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 06:28:00,400 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 06:28:00,400 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 06:28:00,400 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 06:28:00,401 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 06:28:00,401 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 06:28:00,401 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 06:28:00,431 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2019-09-09 06:28:00,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2019-09-09 06:28:00,446 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:28:00,447 INFO L399 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, 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] [2019-09-09 06:28:00,449 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:28:00,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:28:00,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1048845111, now seen corresponding path program 1 times [2019-09-09 06:28:00,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:28:00,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:28:00,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:28:00,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:28:00,495 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:28:00,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:28:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:28:00,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:28:00,915 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 06:28:00,915 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:28:00,923 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 06:28:00,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 06:28:00,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:28:00,943 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2019-09-09 06:28:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:28:01,999 INFO L93 Difference]: Finished difference Result 346 states and 517 transitions. [2019-09-09 06:28:02,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 06:28:02,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2019-09-09 06:28:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:28:02,028 INFO L225 Difference]: With dead ends: 346 [2019-09-09 06:28:02,029 INFO L226 Difference]: Without dead ends: 278 [2019-09-09 06:28:02,031 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 06:28:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-09-09 06:28:02,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-09-09 06:28:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-09-09 06:28:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 412 transitions. [2019-09-09 06:28:02,149 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 412 transitions. Word has length 113 [2019-09-09 06:28:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:28:02,151 INFO L475 AbstractCegarLoop]: Abstraction has 278 states and 412 transitions. [2019-09-09 06:28:02,151 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 06:28:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 412 transitions. [2019-09-09 06:28:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-09 06:28:02,165 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 06:28:02,166 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1] [2019-09-09 06:28:02,166 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 06:28:02,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 06:28:02,169 INFO L82 PathProgramCache]: Analyzing trace with hash -205057334, now seen corresponding path program 1 times [2019-09-09 06:28:02,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 06:28:02,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:28:02,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 06:28:02,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 06:28:02,172 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 06:28:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 06:28:02,361 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 06:28:02,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 06:28:02,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-09 06:28:02,362 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 06:28:02,364 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-09 06:28:02,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-09 06:28:02,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-09 06:28:02,365 INFO L87 Difference]: Start difference. First operand 278 states and 412 transitions. Second operand 4 states. [2019-09-09 06:28:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 06:28:03,343 INFO L93 Difference]: Finished difference Result 681 states and 959 transitions. [2019-09-09 06:28:03,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-09 06:28:03,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2019-09-09 06:28:03,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 06:28:03,345 INFO L225 Difference]: With dead ends: 681 [2019-09-09 06:28:03,345 INFO L226 Difference]: Without dead ends: 0 [2019-09-09 06:28:03,346 INFO L628 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 [2019-09-09 06:28:03,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-09 06:28:03,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-09 06:28:03,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-09 06:28:03,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-09 06:28:03,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2019-09-09 06:28:03,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 06:28:03,347 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-09 06:28:03,347 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-09 06:28:03,348 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-09 06:28:03,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-09 06:28:03,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.09 06:28:03 BoogieIcfgContainer [2019-09-09 06:28:03,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-09 06:28:03,357 INFO L168 Benchmark]: Toolchain (without parser) took 5186.04 ms. Allocated memory was 134.2 MB in the beginning and 262.1 MB in the end (delta: 127.9 MB). Free memory was 87.4 MB in the beginning and 126.8 MB in the end (delta: -39.4 MB). Peak memory consumption was 88.5 MB. Max. memory is 7.1 GB. [2019-09-09 06:28:03,358 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 134.2 MB. Free memory was 107.3 MB in the beginning and 107.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-09-09 06:28:03,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.35 ms. Allocated memory was 134.2 MB in the beginning and 202.9 MB in the end (delta: 68.7 MB). Free memory was 87.2 MB in the beginning and 162.6 MB in the end (delta: -75.4 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2019-09-09 06:28:03,360 INFO L168 Benchmark]: Boogie Preprocessor took 160.63 ms. Allocated memory is still 202.9 MB. Free memory was 162.6 MB in the beginning and 157.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2019-09-09 06:28:03,361 INFO L168 Benchmark]: RCFGBuilder took 1227.83 ms. Allocated memory was 202.9 MB in the beginning and 229.1 MB in the end (delta: 26.2 MB). Free memory was 157.5 MB in the beginning and 173.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. [2019-09-09 06:28:03,362 INFO L168 Benchmark]: TraceAbstraction took 3025.59 ms. Allocated memory was 229.1 MB in the beginning and 262.1 MB in the end (delta: 33.0 MB). Free memory was 173.1 MB in the beginning and 126.8 MB in the end (delta: 46.3 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. [2019-09-09 06:28:03,366 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 134.2 MB. Free memory was 107.3 MB in the beginning and 107.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.35 ms. Allocated memory was 134.2 MB in the beginning and 202.9 MB in the end (delta: 68.7 MB). Free memory was 87.2 MB in the beginning and 162.6 MB in the end (delta: -75.4 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 160.63 ms. Allocated memory is still 202.9 MB. Free memory was 162.6 MB in the beginning and 157.5 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1227.83 ms. Allocated memory was 202.9 MB in the beginning and 229.1 MB in the end (delta: 26.2 MB). Free memory was 157.5 MB in the beginning and 173.1 MB in the end (delta: -15.6 MB). Peak memory consumption was 83.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3025.59 ms. Allocated memory was 229.1 MB in the beginning and 262.1 MB in the end (delta: 33.0 MB). Free memory was 173.1 MB in the beginning and 126.8 MB in the end (delta: 46.3 MB). Peak memory consumption was 79.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 497]: 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, 207 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 76 SDtfs, 278 SDslu, 35 SDs, 0 SdLazy, 1067 SolverSat, 273 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=278occurred in iteration=1, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 243 NumberOfCodeBlocks, 243 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 107296 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...