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_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:40:22,120 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:40:22,123 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:40:22,143 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:40:22,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:40:22,145 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:40:22,147 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:40:22,149 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:40:22,151 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:40:22,158 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:40:22,159 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:40:22,159 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:40:22,162 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:40:22,163 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:40:22,164 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:40:22,168 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:40:22,169 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:40:22,171 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:40:22,175 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:40:22,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:40:22,181 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:40:22,182 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:40:22,188 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:40:22,203 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 20:40:22,225 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:40:22,226 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:40:22,226 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:40:22,227 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:40:22,227 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:40:22,227 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:40:22,228 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:40:22,228 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:40:22,228 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:40:22,228 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:40:22,229 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:40:22,229 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:40:22,229 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:40:22,229 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:40:22,229 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:40:22,230 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:40:22,230 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:40:22,230 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:40:22,230 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:40:22,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:40:22,231 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:40:22,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:40:22,231 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:40:22,232 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:40:22,232 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:40:22,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:40:22,232 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:40:22,232 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:40:22,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:40:22,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:40:22,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:40:22,313 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:40:22,313 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:40:22,314 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label01_true-unreach-call.c [2018-10-23 20:40:22,383 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/84ed911e0/ff9cb3e9f412450abbdfa137f4b8fb75/FLAG9a98e5b38 [2018-10-23 20:40:23,075 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:40:23,076 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label01_true-unreach-call.c [2018-10-23 20:40:23,112 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/84ed911e0/ff9cb3e9f412450abbdfa137f4b8fb75/FLAG9a98e5b38 [2018-10-23 20:40:23,136 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/84ed911e0/ff9cb3e9f412450abbdfa137f4b8fb75 [2018-10-23 20:40:23,149 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:40:23,151 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:40:23,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:40:23,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:40:23,157 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:40:23,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:23" (1/1) ... [2018-10-23 20:40:23,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbc7c83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:23, skipping insertion in model container [2018-10-23 20:40:23,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:23" (1/1) ... [2018-10-23 20:40:23,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:40:23,305 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:40:24,334 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:40:24,338 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:40:24,718 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:40:24,741 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:40:24,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24 WrapperNode [2018-10-23 20:40:24,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:40:24,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:40:24,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:40:24,743 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:40:24,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (1/1) ... [2018-10-23 20:40:24,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (1/1) ... [2018-10-23 20:40:25,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:40:25,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:40:25,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:40:25,287 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:40:25,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (1/1) ... [2018-10-23 20:40:25,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (1/1) ... [2018-10-23 20:40:25,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (1/1) ... [2018-10-23 20:40:25,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (1/1) ... [2018-10-23 20:40:25,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (1/1) ... [2018-10-23 20:40:25,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (1/1) ... [2018-10-23 20:40:25,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (1/1) ... [2018-10-23 20:40:25,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:40:25,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:40:25,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:40:25,648 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:40:25,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (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 20:40:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:40:25,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:40:25,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:40:41,627 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:40:41,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:40:41 BoogieIcfgContainer [2018-10-23 20:40:41,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:40:41,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:40:41,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:40:41,633 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:40:41,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:40:23" (1/3) ... [2018-10-23 20:40:41,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e4b3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:40:41, skipping insertion in model container [2018-10-23 20:40:41,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:24" (2/3) ... [2018-10-23 20:40:41,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e4b3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:40:41, skipping insertion in model container [2018-10-23 20:40:41,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:40:41" (3/3) ... [2018-10-23 20:40:41,637 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label01_true-unreach-call.c [2018-10-23 20:40:41,645 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:40:41,655 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:40:41,672 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:40:41,725 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:40:41,726 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:40:41,726 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:40:41,726 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:40:41,726 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:40:41,726 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:40:41,727 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:40:41,727 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:40:41,727 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:40:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:40:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-23 20:40:41,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:40:41,776 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] [2018-10-23 20:40:41,779 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:40:41,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:40:41,785 INFO L82 PathProgramCache]: Analyzing trace with hash 84973194, now seen corresponding path program 1 times [2018-10-23 20:40:41,788 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:40:41,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:40:41,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:40:41,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:40:41,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:40:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:40:42,207 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 20:40:42,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:40:42,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:40:42,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:40:42,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:40:42,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:40:42,233 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:40:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:40:58,051 INFO L93 Difference]: Finished difference Result 2102 states and 3914 transitions. [2018-10-23 20:40:58,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:40:58,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2018-10-23 20:40:58,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:40:58,088 INFO L225 Difference]: With dead ends: 2102 [2018-10-23 20:40:58,089 INFO L226 Difference]: Without dead ends: 1504 [2018-10-23 20:40:58,096 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 20:40:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2018-10-23 20:40:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1491. [2018-10-23 20:40:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2018-10-23 20:40:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 2416 transitions. [2018-10-23 20:40:58,233 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 2416 transitions. Word has length 47 [2018-10-23 20:40:58,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:40:58,234 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 2416 transitions. [2018-10-23 20:40:58,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:40:58,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 2416 transitions. [2018-10-23 20:40:58,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-23 20:40:58,239 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:40:58,240 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, 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 20:40:58,240 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:40:58,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:40:58,241 INFO L82 PathProgramCache]: Analyzing trace with hash -509150159, now seen corresponding path program 1 times [2018-10-23 20:40:58,241 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:40:58,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:40:58,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:40:58,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:40:58,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:40:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:40:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:40:58,499 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:40:58,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:40:58,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:40:58,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:40:58,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:40:58,502 INFO L87 Difference]: Start difference. First operand 1491 states and 2416 transitions. Second operand 4 states. [2018-10-23 20:41:10,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:10,512 INFO L93 Difference]: Finished difference Result 4268 states and 6993 transitions. [2018-10-23 20:41:10,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:41:10,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2018-10-23 20:41:10,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:10,529 INFO L225 Difference]: With dead ends: 4268 [2018-10-23 20:41:10,530 INFO L226 Difference]: Without dead ends: 2779 [2018-10-23 20:41:10,537 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 20:41:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2018-10-23 20:41:10,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2779. [2018-10-23 20:41:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-10-23 20:41:10,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3841 transitions. [2018-10-23 20:41:10,597 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3841 transitions. Word has length 115 [2018-10-23 20:41:10,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:10,598 INFO L481 AbstractCegarLoop]: Abstraction has 2779 states and 3841 transitions. [2018-10-23 20:41:10,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:41:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3841 transitions. [2018-10-23 20:41:10,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-23 20:41:10,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:10,602 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, 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 20:41:10,602 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:10,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:10,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1341228030, now seen corresponding path program 1 times [2018-10-23 20:41:10,603 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:10,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:10,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:10,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:10,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:10,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:41:10,919 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 20:41:10,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:10,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:41:27,396 WARN L179 SmtUtils]: Spent 16.27 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-23 20:41:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:27,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:41:27,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:41:27,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:41:27,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:41:27,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:41:27,946 INFO L87 Difference]: Start difference. First operand 2779 states and 3841 transitions. Second operand 5 states. Received shutdown request... [2018-10-23 20:44:51,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:44:51,934 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:44:51,941 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:44:51,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:44:51 BoogieIcfgContainer [2018-10-23 20:44:51,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:44:51,943 INFO L168 Benchmark]: Toolchain (without parser) took 268792.55 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -594.3 MB). Peak memory consumption was 518.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:51,945 INFO L168 Benchmark]: CDTParser took 0.23 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 20:44:51,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1589.49 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 20:44:51,949 INFO L168 Benchmark]: Boogie Procedure Inliner took 543.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -909.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:51,950 INFO L168 Benchmark]: Boogie Preprocessor took 360.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:51,951 INFO L168 Benchmark]: RCFGBuilder took 15980.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 478.6 MB). Peak memory consumption was 478.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:51,957 INFO L168 Benchmark]: TraceAbstraction took 250312.41 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 327.7 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -328.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:44:51,963 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1589.49 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 543.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -909.6 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 360.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15980.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 478.6 MB). Peak memory consumption was 478.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250312.41 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 327.7 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -328.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 146]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 146). Cancelled while BasicCegarLoop was constructing difference of abstraction (2779states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (11439 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 250.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 231.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1289 SDtfs, 3009 SDslu, 617 SDs, 0 SdLazy, 8240 SolverSat, 2411 SolverUnsat, 93 SolverUnknown, 0 SolverNotchecked, 228.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2779occurred 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, 13 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 398 NumberOfCodeBlocks, 398 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 394 ConstructedInterpolants, 45 QuantifiedInterpolants, 941902 SizeOfPredicates, 1 NumberOfNonLiveVariables, 180 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 88/132 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown