java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/vogal-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 20:37:06,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 20:37:06,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 20:37:06,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-03 20:37:06,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 20:37:06,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 20:37:06,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 20:37:06,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 20:37:06,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 20:37:06,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 20:37:06,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 20:37:06,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 20:37:06,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 20:37:06,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 20:37:06,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 20:37:06,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 20:37:06,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 20:37:06,216 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-03 20:37:06,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-03 20:37:06,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-03 20:37:06,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-03 20:37:06,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-03 20:37:06,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-03 20:37:06,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-03 20:37:06,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-03 20:37:06,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 20:37:06,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 20:37:06,222 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 20:37:06,223 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 [2019-09-03 20:37:06,239 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 20:37:06,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 20:37:06,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-03 20:37:06,240 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-03 20:37:06,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-03 20:37:06,242 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-03 20:37:06,242 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-03 20:37:06,242 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-03 20:37:06,242 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-03 20:37:06,243 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-03 20:37:06,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 20:37:06,244 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 20:37:06,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 20:37:06,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 20:37:06,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 20:37:06,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 20:37:06,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 20:37:06,246 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 20:37:06,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 20:37:06,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 20:37:06,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 20:37:06,247 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-03 20:37:06,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 20:37:06,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 20:37:06,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 20:37:06,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 20:37:06,249 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-03 20:37:06,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 20:37:06,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 20:37:06,249 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-03 20:37:06,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 20:37:06,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 20:37:06,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 20:37:06,312 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 20:37:06,313 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 20:37:06,313 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/vogal-1.i [2019-09-03 20:37:06,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823961c40/95fe275f30c74cf8bbb572a552c4d0aa/FLAG6cc1e1259 [2019-09-03 20:37:06,858 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 20:37:06,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/vogal-1.i [2019-09-03 20:37:06,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823961c40/95fe275f30c74cf8bbb572a552c4d0aa/FLAG6cc1e1259 [2019-09-03 20:37:07,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/823961c40/95fe275f30c74cf8bbb572a552c4d0aa [2019-09-03 20:37:07,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 20:37:07,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 20:37:07,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 20:37:07,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 20:37:07,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 20:37:07,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:37:07" (1/1) ... [2019-09-03 20:37:07,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bb5b7b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07, skipping insertion in model container [2019-09-03 20:37:07,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 08:37:07" (1/1) ... [2019-09-03 20:37:07,237 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 20:37:07,255 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 20:37:07,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:37:07,435 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 20:37:07,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 20:37:07,570 INFO L192 MainTranslator]: Completed translation [2019-09-03 20:37:07,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07 WrapperNode [2019-09-03 20:37:07,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 20:37:07,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 20:37:07,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 20:37:07,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 20:37:07,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07" (1/1) ... [2019-09-03 20:37:07,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07" (1/1) ... [2019-09-03 20:37:07,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07" (1/1) ... [2019-09-03 20:37:07,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07" (1/1) ... [2019-09-03 20:37:07,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07" (1/1) ... [2019-09-03 20:37:07,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07" (1/1) ... [2019-09-03 20:37:07,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07" (1/1) ... [2019-09-03 20:37:07,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 20:37:07,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 20:37:07,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 20:37:07,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 20:37:07,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07" (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 [2019-09-03 20:37:07,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 20:37:07,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 20:37:07,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 20:37:07,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 20:37:07,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 20:37:07,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-03 20:37:07,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 20:37:07,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-03 20:37:07,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 20:37:07,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-03 20:37:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-03 20:37:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-03 20:37:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-03 20:37:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-03 20:37:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 20:37:07,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 20:37:08,028 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 20:37:08,029 INFO L283 CfgBuilder]: Removed 6 assume(true) statements. [2019-09-03 20:37:08,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:37:08 BoogieIcfgContainer [2019-09-03 20:37:08,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 20:37:08,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 20:37:08,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 20:37:08,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 20:37:08,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 08:37:07" (1/3) ... [2019-09-03 20:37:08,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf961d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:37:08, skipping insertion in model container [2019-09-03 20:37:08,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 08:37:07" (2/3) ... [2019-09-03 20:37:08,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf961d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 08:37:08, skipping insertion in model container [2019-09-03 20:37:08,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 08:37:08" (3/3) ... [2019-09-03 20:37:08,041 INFO L109 eAbstractionObserver]: Analyzing ICFG vogal-1.i [2019-09-03 20:37:08,054 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 20:37:08,063 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 20:37:08,079 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 20:37:08,107 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 20:37:08,107 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-03 20:37:08,108 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 20:37:08,108 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 20:37:08,108 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 20:37:08,108 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 20:37:08,108 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 20:37:08,108 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 20:37:08,125 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-09-03 20:37:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-03 20:37:08,136 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:37:08,137 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 20:37:08,140 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:37:08,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:37:08,146 INFO L82 PathProgramCache]: Analyzing trace with hash 2138170830, now seen corresponding path program 1 times [2019-09-03 20:37:08,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:37:08,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:08,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:37:08,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:08,194 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:37:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:37:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:37:08,302 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:37:08,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 20:37:08,303 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:37:08,309 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:37:08,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:37:08,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:37:08,326 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2019-09-03 20:37:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:37:08,347 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-09-03 20:37:08,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:37:08,349 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-03 20:37:08,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:37:08,359 INFO L225 Difference]: With dead ends: 37 [2019-09-03 20:37:08,360 INFO L226 Difference]: Without dead ends: 30 [2019-09-03 20:37:08,362 INFO L628 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 [2019-09-03 20:37:08,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-09-03 20:37:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-09-03 20:37:08,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-03 20:37:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-09-03 20:37:08,407 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 18 [2019-09-03 20:37:08,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:37:08,408 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-09-03 20:37:08,408 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:37:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-09-03 20:37:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-03 20:37:08,409 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:37:08,410 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] [2019-09-03 20:37:08,410 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:37:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:37:08,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1430244045, now seen corresponding path program 1 times [2019-09-03 20:37:08,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:37:08,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:08,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:37:08,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:08,413 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:37:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:37:08,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:37:08,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 20:37:08,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-03 20:37:08,553 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:37:08,555 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-03 20:37:08,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-03 20:37:08,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-03 20:37:08,557 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 3 states. [2019-09-03 20:37:08,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:37:08,681 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2019-09-03 20:37:08,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-03 20:37:08,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-09-03 20:37:08,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:37:08,686 INFO L225 Difference]: With dead ends: 45 [2019-09-03 20:37:08,686 INFO L226 Difference]: Without dead ends: 45 [2019-09-03 20:37:08,690 INFO L628 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 [2019-09-03 20:37:08,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-09-03 20:37:08,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2019-09-03 20:37:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-03 20:37:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2019-09-03 20:37:08,703 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 20 [2019-09-03 20:37:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:37:08,703 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2019-09-03 20:37:08,703 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-03 20:37:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2019-09-03 20:37:08,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-09-03 20:37:08,705 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 20:37:08,705 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] [2019-09-03 20:37:08,707 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 20:37:08,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:37:08,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1498528533, now seen corresponding path program 1 times [2019-09-03 20:37:08,708 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-03 20:37:08,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:08,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 20:37:08,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 20:37:08,714 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-03 20:37:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 20:37:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 20:37:08,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-03 20:37:08,810 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-03 20:37:08,811 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2019-09-03 20:37:08,813 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [23], [28], [31], [37], [43], [68], [73], [76], [104], [107], [109], [115], [116], [117], [119] [2019-09-03 20:37:08,850 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-03 20:37:08,850 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-03 20:37:08,920 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-03 20:37:08,925 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 27 variables. [2019-09-03 20:37:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 20:37:08,928 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-03 20:37:08,979 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-03 20:37:08,982 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-03 20:37:08,984 INFO L420 sIntCurrentIteration]: We unified 21 AI predicates to 21 [2019-09-03 20:37:08,984 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-03 20:37:08,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-03 20:37:08,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-03 20:37:08,988 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-03 20:37:08,988 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 20:37:08,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 20:37:08,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:37:08,989 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand 2 states. [2019-09-03 20:37:08,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 20:37:08,990 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-03 20:37:08,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 20:37:08,990 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-09-03 20:37:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 20:37:08,991 INFO L225 Difference]: With dead ends: 6 [2019-09-03 20:37:08,991 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 20:37:08,991 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 20:37:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 20:37:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 20:37:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 20:37:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 20:37:08,992 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-09-03 20:37:08,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 20:37:08,993 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 20:37:08,993 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 20:37:08,993 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 20:37:08,993 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 20:37:08,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 08:37:08 BoogieIcfgContainer [2019-09-03 20:37:08,998 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 20:37:09,001 INFO L168 Benchmark]: Toolchain (without parser) took 1778.81 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 87.9 MB in the beginning and 109.1 MB in the end (delta: -21.3 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:09,002 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 133.2 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 20:37:09,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.89 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 87.7 MB in the beginning and 177.7 MB in the end (delta: -90.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:09,004 INFO L168 Benchmark]: Boogie Preprocessor took 54.86 ms. Allocated memory is still 200.8 MB. Free memory was 177.7 MB in the beginning and 174.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:09,005 INFO L168 Benchmark]: RCFGBuilder took 407.06 ms. Allocated memory is still 200.8 MB. Free memory was 174.5 MB in the beginning and 156.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:09,006 INFO L168 Benchmark]: TraceAbstraction took 964.09 ms. Allocated memory is still 200.8 MB. Free memory was 155.8 MB in the beginning and 109.1 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2019-09-03 20:37:09,010 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 133.2 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 348.89 ms. Allocated memory was 133.2 MB in the beginning and 200.8 MB in the end (delta: 67.6 MB). Free memory was 87.7 MB in the beginning and 177.7 MB in the end (delta: -90.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.86 ms. Allocated memory is still 200.8 MB. Free memory was 177.7 MB in the beginning and 174.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 407.06 ms. Allocated memory is still 200.8 MB. Free memory was 174.5 MB in the beginning and 156.4 MB in the end (delta: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 964.09 ms. Allocated memory is still 200.8 MB. Free memory was 155.8 MB in the beginning and 109.1 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 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, 37 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 78 SDtfs, 16 SDslu, 24 SDs, 0 SdLazy, 19 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 0.8928571428571429 AbsIntWeakeningRatio, 1.0476190476190477 AbsIntAvgWeakeningVarsNumRemoved, 0.2857142857142857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 1423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...