java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:40:46,191 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:40:46,195 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:40:46,215 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:40:46,215 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:40:46,216 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:40:46,220 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:40:46,223 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:40:46,230 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:40:46,231 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:40:46,232 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:40:46,232 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:40:46,236 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:40:46,238 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:40:46,242 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:40:46,243 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:40:46,244 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:40:46,249 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:40:46,252 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:40:46,256 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:40:46,257 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:40:46,259 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:40:46,263 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:40:46,281 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:40:46,308 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:40:46,309 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:40:46,310 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:40:46,311 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:40:46,311 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:40:46,313 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:40:46,313 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:40:46,313 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:40:46,313 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:40:46,314 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:40:46,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:40:46,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:40:46,315 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:40:46,315 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:40:46,315 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:40:46,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:40:46,316 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:40:46,316 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:40:46,316 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:40:46,316 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:40:46,316 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:40:46,317 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:40:46,318 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:40:46,318 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:40:46,318 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:40:46,319 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:40:46,319 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:40:46,319 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:40:46,376 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:40:46,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:40:46,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:40:46,397 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:40:46,397 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:40:46,398 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c [2018-10-23 20:40:46,463 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4b1b2bb31/6de3402e09324de9acf1064ff28deb66/FLAGec87465d6 [2018-10-23 20:40:47,180 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:40:47,181 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label08_true-unreach-call.c [2018-10-23 20:40:47,206 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4b1b2bb31/6de3402e09324de9acf1064ff28deb66/FLAGec87465d6 [2018-10-23 20:40:47,221 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4b1b2bb31/6de3402e09324de9acf1064ff28deb66 [2018-10-23 20:40:47,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:40:47,235 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:40:47,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:40:47,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:40:47,242 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:40:47,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:47" (1/1) ... [2018-10-23 20:40:47,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1901a9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:47, skipping insertion in model container [2018-10-23 20:40:47,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:47" (1/1) ... [2018-10-23 20:40:47,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:40:47,372 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:40:48,407 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:40:48,416 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:40:48,828 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:40:48,852 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:40:48,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48 WrapperNode [2018-10-23 20:40:48,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:40:48,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:40:48,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:40:48,855 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:40:48,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:48,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:49,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:40:49,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:40:49,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:40:49,391 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:40:49,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:49,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:49,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:49,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:49,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:49,651 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:49,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:49,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:40:49,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:40:49,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:40:49,787 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:40:49,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 20:40:49,859 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:40:49,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:40:49,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:40:58,881 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:40:58,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:40:58 BoogieIcfgContainer [2018-10-23 20:40:58,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:40:58,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:40:58,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:40:58,887 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:40:58,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:40:47" (1/3) ... [2018-10-23 20:40:58,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bae9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:40:58, skipping insertion in model container [2018-10-23 20:40:58,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48" (2/3) ... [2018-10-23 20:40:58,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29bae9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:40:58, skipping insertion in model container [2018-10-23 20:40:58,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:40:58" (3/3) ... [2018-10-23 20:40:58,892 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label08_true-unreach-call.c [2018-10-23 20:40:58,903 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:40:58,913 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:40:58,932 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:40:58,972 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:40:58,973 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:40:58,973 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:40:58,974 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:40:58,974 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:40:58,974 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:40:58,974 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:40:58,974 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:40:58,974 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:40:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:40:59,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-23 20:40:59,017 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:40:59,018 INFO L375 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] [2018-10-23 20:40:59,021 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:40:59,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:40:59,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1281577798, now seen corresponding path program 1 times [2018-10-23 20:40:59,031 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:40:59,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:40:59,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:40:59,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:40:59,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:40:59,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:40:59,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:40:59,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:40:59,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:40:59,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:40:59,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:40:59,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:40:59,636 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:41:11,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:11,117 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-10-23 20:41:11,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:41:11,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-10-23 20:41:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:11,161 INFO L225 Difference]: With dead ends: 2085 [2018-10-23 20:41:11,162 INFO L226 Difference]: Without dead ends: 1487 [2018-10-23 20:41:11,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-10-23 20:41:11,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-10-23 20:41:11,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-23 20:41:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-10-23 20:41:11,294 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 59 [2018-10-23 20:41:11,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:11,294 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-10-23 20:41:11,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:41:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-10-23 20:41:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-23 20:41:11,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:11,301 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:11,301 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:11,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:11,302 INFO L82 PathProgramCache]: Analyzing trace with hash -580036831, now seen corresponding path program 1 times [2018-10-23 20:41:11,302 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:11,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:11,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:11,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:11,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:11,566 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:11,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:41:11,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:41:11,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:41:11,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:41:11,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:11,569 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-10-23 20:41:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:20,734 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-10-23 20:41:20,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:41:20,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-10-23 20:41:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:20,746 INFO L225 Difference]: With dead ends: 2908 [2018-10-23 20:41:20,746 INFO L226 Difference]: Without dead ends: 1887 [2018-10-23 20:41:20,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:20,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-10-23 20:41:20,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-10-23 20:41:20,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-10-23 20:41:20,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-10-23 20:41:20,805 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 127 [2018-10-23 20:41:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:20,807 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-10-23 20:41:20,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:41:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-10-23 20:41:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-23 20:41:20,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:20,813 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:20,813 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:20,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:20,813 INFO L82 PathProgramCache]: Analyzing trace with hash -919847698, now seen corresponding path program 1 times [2018-10-23 20:41:20,814 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:20,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:20,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:20,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:20,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:21,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:41:21,231 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:41:21,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:21,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:41:37,874 WARN L179 SmtUtils]: Spent 16.29 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-23 20:41:38,532 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:38,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:41:38,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 20:41:38,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:41:38,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:41:38,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:41:38,568 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 7 states. [2018-10-23 20:41:48,898 WARN L179 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-23 20:42:11,112 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 78 Received shutdown request... [2018-10-23 20:45:17,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:45:17,907 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:45:17,911 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:45:17,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:45:17 BoogieIcfgContainer [2018-10-23 20:45:17,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:45:17,913 INFO L168 Benchmark]: Toolchain (without parser) took 270678.68 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 69.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:17,914 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:45:17,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1616.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:17,916 INFO L168 Benchmark]: Boogie Procedure Inliner took 537.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:17,917 INFO L168 Benchmark]: Boogie Preprocessor took 395.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:17,918 INFO L168 Benchmark]: RCFGBuilder took 9095.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 483.2 MB). Peak memory consumption was 483.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:17,919 INFO L168 Benchmark]: TraceAbstraction took 259028.34 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 465.6 MB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -918.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:45:17,924 INFO L336 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 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1616.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 537.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 793.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -919.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 395.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9095.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 483.2 MB). Peak memory consumption was 483.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259028.34 ms. Allocated memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: 465.6 MB). Free memory was 1.7 GB in the beginning and 2.6 GB in the end (delta: -918.2 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 182]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 182). Cancelled while BasicCegarLoop was constructing difference of abstraction (1887states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (7751 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 258.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 240.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1247 SDtfs, 4696 SDslu, 893 SDs, 0 SdLazy, 10770 SolverSat, 2682 SolverUnsat, 90 SolverUnknown, 0 SolverNotchecked, 219.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 33.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1887occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 464 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.0s InterpolantComputationTime, 446 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 442 ConstructedInterpolants, 57 QuantifiedInterpolants, 1383976 SizeOfPredicates, 1 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 112/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown