java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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/Problem19_label32_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:44:20,126 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:44:20,128 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:44:20,143 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:44:20,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:44:20,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:44:20,146 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:44:20,149 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:44:20,151 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:44:20,152 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:44:20,162 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:44:20,162 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:44:20,163 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:44:20,164 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:44:20,165 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:44:20,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:44:20,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:44:20,168 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:44:20,170 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:44:20,172 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:44:20,173 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:44:20,174 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:44:20,176 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:44:20,177 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:44:20,177 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:44:20,178 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:44:20,178 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:44:20,179 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:44:20,180 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:44:20,181 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:44:20,181 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:44:20,182 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 19:44:20,184 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:44:20,199 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:44:20,200 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:44:20,200 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:44:20,201 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:44:20,201 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:44:20,201 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:44:20,202 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:44:20,202 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:44:20,202 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:44:20,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:44:20,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:44:20,203 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:44:20,203 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:44:20,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:44:20,203 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:44:20,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:44:20,204 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:44:20,204 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:44:20,204 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:44:20,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:44:20,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:44:20,205 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:44:20,205 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:44:20,205 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:44:20,205 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:44:20,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:44:20,205 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:44:20,206 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:44:20,263 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:44:20,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:44:20,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:44:20,282 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:44:20,283 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:44:20,284 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label32_false-unreach-call.c [2018-11-06 19:44:20,350 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/397aef6f9/20212a818afe4d92b599c5acb5d24158/FLAGa23a610c0 [2018-11-06 19:44:21,228 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:44:21,229 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label32_false-unreach-call.c [2018-11-06 19:44:21,271 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/397aef6f9/20212a818afe4d92b599c5acb5d24158/FLAGa23a610c0 [2018-11-06 19:44:21,286 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/397aef6f9/20212a818afe4d92b599c5acb5d24158 [2018-11-06 19:44:21,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:44:21,300 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:44:21,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:44:21,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:44:21,305 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:44:21,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:44:21" (1/1) ... [2018-11-06 19:44:21,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1a7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:21, skipping insertion in model container [2018-11-06 19:44:21,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:44:21" (1/1) ... [2018-11-06 19:44:21,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:44:21,571 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:44:23,551 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:44:23,556 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:44:24,778 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:44:24,837 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:44:24,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24 WrapperNode [2018-11-06 19:44:24,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:44:24,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:44:24,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:44:24,839 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:44:24,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (1/1) ... [2018-11-06 19:44:25,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (1/1) ... [2018-11-06 19:44:25,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:44:25,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:44:25,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:44:25,979 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:44:25,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (1/1) ... [2018-11-06 19:44:25,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (1/1) ... [2018-11-06 19:44:26,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (1/1) ... [2018-11-06 19:44:26,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (1/1) ... [2018-11-06 19:44:26,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (1/1) ... [2018-11-06 19:44:26,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (1/1) ... [2018-11-06 19:44:26,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (1/1) ... [2018-11-06 19:44:26,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:44:26,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:44:26,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:44:26,675 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:44:26,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (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 [2018-11-06 19:44:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:44:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:44:26,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:44:43,095 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:44:43,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:44:43 BoogieIcfgContainer [2018-11-06 19:44:43,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:44:43,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:44:43,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:44:43,100 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:44:43,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:44:21" (1/3) ... [2018-11-06 19:44:43,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b268f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:44:43, skipping insertion in model container [2018-11-06 19:44:43,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:44:24" (2/3) ... [2018-11-06 19:44:43,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b268f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:44:43, skipping insertion in model container [2018-11-06 19:44:43,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:44:43" (3/3) ... [2018-11-06 19:44:43,104 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label32_false-unreach-call.c [2018-11-06 19:44:43,114 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:44:43,125 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:44:43,142 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:44:43,195 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:44:43,196 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:44:43,196 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:44:43,196 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:44:43,197 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:44:43,197 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:44:43,197 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:44:43,197 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:44:43,197 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:44:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 19:44:43,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-06 19:44:43,259 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:44:43,261 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] [2018-11-06 19:44:43,263 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:44:43,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:44:43,269 INFO L82 PathProgramCache]: Analyzing trace with hash 183950178, now seen corresponding path program 1 times [2018-11-06 19:44:43,272 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:44:43,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:44:43,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:43,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:44:43,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:44:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:44:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:44:43,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:44:43,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:44:43,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:44:43,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:44:43,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:44:43,709 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 19:45:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:45:05,441 INFO L93 Difference]: Finished difference Result 6406 states and 12224 transitions. [2018-11-06 19:45:05,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:45:05,444 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-06 19:45:05,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:45:05,500 INFO L225 Difference]: With dead ends: 6406 [2018-11-06 19:45:05,501 INFO L226 Difference]: Without dead ends: 4650 [2018-11-06 19:45:05,511 INFO L604 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 [2018-11-06 19:45:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4650 states. [2018-11-06 19:45:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4650 to 4611. [2018-11-06 19:45:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4611 states. [2018-11-06 19:45:05,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4611 states to 4611 states and 7301 transitions. [2018-11-06 19:45:05,714 INFO L78 Accepts]: Start accepts. Automaton has 4611 states and 7301 transitions. Word has length 20 [2018-11-06 19:45:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:45:05,715 INFO L480 AbstractCegarLoop]: Abstraction has 4611 states and 7301 transitions. [2018-11-06 19:45:05,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:45:05,715 INFO L276 IsEmpty]: Start isEmpty. Operand 4611 states and 7301 transitions. [2018-11-06 19:45:05,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-06 19:45:05,721 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:45:05,723 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:45:05,723 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:45:05,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:45:05,725 INFO L82 PathProgramCache]: Analyzing trace with hash -311574714, now seen corresponding path program 1 times [2018-11-06 19:45:05,725 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:45:05,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:45:05,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:05,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:05,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:06,171 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 19:45:06,831 WARN L179 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-11-06 19:45:07,312 WARN L179 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-11-06 19:45:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:45:07,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:45:07,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:45:07,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:45:07,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:45:07,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:45:07,402 INFO L87 Difference]: Start difference. First operand 4611 states and 7301 transitions. Second operand 6 states. [2018-11-06 19:45:42,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:45:42,453 INFO L93 Difference]: Finished difference Result 20180 states and 30824 transitions. [2018-11-06 19:45:42,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:45:42,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-11-06 19:45:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:45:42,524 INFO L225 Difference]: With dead ends: 20180 [2018-11-06 19:45:42,524 INFO L226 Difference]: Without dead ends: 15571 [2018-11-06 19:45:42,533 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:45:42,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15571 states. [2018-11-06 19:45:42,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15571 to 14198. [2018-11-06 19:45:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14198 states. [2018-11-06 19:45:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14198 states to 14198 states and 18990 transitions. [2018-11-06 19:45:42,802 INFO L78 Accepts]: Start accepts. Automaton has 14198 states and 18990 transitions. Word has length 88 [2018-11-06 19:45:42,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:45:42,803 INFO L480 AbstractCegarLoop]: Abstraction has 14198 states and 18990 transitions. [2018-11-06 19:45:42,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:45:42,803 INFO L276 IsEmpty]: Start isEmpty. Operand 14198 states and 18990 transitions. [2018-11-06 19:45:42,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-11-06 19:45:42,812 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:45:42,812 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:45:42,813 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:45:42,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:45:42,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1605014085, now seen corresponding path program 1 times [2018-11-06 19:45:42,813 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:45:42,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:45:42,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:42,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:45:42,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:45:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:45:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-06 19:45:43,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:45:43,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:45:43,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:45:43,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:45:43,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:45:43,843 INFO L87 Difference]: Start difference. First operand 14198 states and 18990 transitions. Second operand 7 states. [2018-11-06 19:46:15,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:15,312 INFO L93 Difference]: Finished difference Result 42065 states and 56298 transitions. [2018-11-06 19:46:15,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:46:15,313 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2018-11-06 19:46:15,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:15,382 INFO L225 Difference]: With dead ends: 42065 [2018-11-06 19:46:15,382 INFO L226 Difference]: Without dead ends: 27869 [2018-11-06 19:46:15,399 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:46:15,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27869 states. [2018-11-06 19:46:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27869 to 25134. [2018-11-06 19:46:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25134 states. [2018-11-06 19:46:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25134 states to 25134 states and 30401 transitions. [2018-11-06 19:46:15,840 INFO L78 Accepts]: Start accepts. Automaton has 25134 states and 30401 transitions. Word has length 296 [2018-11-06 19:46:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:15,841 INFO L480 AbstractCegarLoop]: Abstraction has 25134 states and 30401 transitions. [2018-11-06 19:46:15,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:46:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 25134 states and 30401 transitions. [2018-11-06 19:46:15,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-11-06 19:46:15,852 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:15,852 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2018-11-06 19:46:15,853 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:15,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:15,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1455013153, now seen corresponding path program 1 times [2018-11-06 19:46:15,853 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:15,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:15,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:15,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:15,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 35 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:46:16,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:46:16,410 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:46:16,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:16,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:46:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:46:16,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:46:16,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 19:46:16,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:46:16,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:46:16,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:46:16,817 INFO L87 Difference]: Start difference. First operand 25134 states and 30401 transitions. Second operand 5 states. [2018-11-06 19:46:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:46:48,502 INFO L93 Difference]: Finished difference Result 114900 states and 149450 transitions. [2018-11-06 19:46:48,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:46:48,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2018-11-06 19:46:48,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:46:48,645 INFO L225 Difference]: With dead ends: 114900 [2018-11-06 19:46:48,646 INFO L226 Difference]: Without dead ends: 80202 [2018-11-06 19:46:48,696 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:46:48,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80202 states. [2018-11-06 19:46:49,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80202 to 80104. [2018-11-06 19:46:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80104 states. [2018-11-06 19:46:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80104 states to 80104 states and 93292 transitions. [2018-11-06 19:46:49,930 INFO L78 Accepts]: Start accepts. Automaton has 80104 states and 93292 transitions. Word has length 324 [2018-11-06 19:46:49,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:46:49,931 INFO L480 AbstractCegarLoop]: Abstraction has 80104 states and 93292 transitions. [2018-11-06 19:46:49,931 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:46:49,931 INFO L276 IsEmpty]: Start isEmpty. Operand 80104 states and 93292 transitions. [2018-11-06 19:46:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-11-06 19:46:49,937 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:49,937 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:46:49,938 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:49,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:49,938 INFO L82 PathProgramCache]: Analyzing trace with hash 211919959, now seen corresponding path program 1 times [2018-11-06 19:46:49,938 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:49,939 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:49,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:49,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:49,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 35 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-06 19:46:50,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:46:50,553 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:46:50,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:50,673 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:46:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:46:50,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:46:50,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 19:46:50,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:46:50,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:46:50,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:46:50,825 INFO L87 Difference]: Start difference. First operand 80104 states and 93292 transitions. Second operand 4 states. [2018-11-06 19:47:09,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:09,056 INFO L93 Difference]: Finished difference Result 286225 states and 337230 transitions. [2018-11-06 19:47:09,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:47:09,057 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 334 [2018-11-06 19:47:09,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:09,352 INFO L225 Difference]: With dead ends: 286225 [2018-11-06 19:47:09,352 INFO L226 Difference]: Without dead ends: 207489 [2018-11-06 19:47:09,433 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:09,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207489 states. [2018-11-06 19:47:11,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207489 to 133370. [2018-11-06 19:47:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133370 states. [2018-11-06 19:47:11,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133370 states to 133370 states and 154665 transitions. [2018-11-06 19:47:11,871 INFO L78 Accepts]: Start accepts. Automaton has 133370 states and 154665 transitions. Word has length 334 [2018-11-06 19:47:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:11,872 INFO L480 AbstractCegarLoop]: Abstraction has 133370 states and 154665 transitions. [2018-11-06 19:47:11,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:47:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 133370 states and 154665 transitions. [2018-11-06 19:47:11,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-11-06 19:47:11,888 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:11,889 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-11-06 19:47:11,889 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:11,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:11,890 INFO L82 PathProgramCache]: Analyzing trace with hash -3166084, now seen corresponding path program 1 times [2018-11-06 19:47:11,890 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:11,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:11,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:11,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:11,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:12,890 WARN L179 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-11-06 19:47:13,090 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-11-06 19:47:13,734 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 437 proven. 4 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-11-06 19:47:13,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:47:13,734 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:47:13,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:13,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:47:14,903 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 441 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2018-11-06 19:47:14,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:47:14,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 19:47:14,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:47:14,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:47:14,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:47:14,925 INFO L87 Difference]: Start difference. First operand 133370 states and 154665 transitions. Second operand 5 states. [2018-11-06 19:47:33,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:33,815 INFO L93 Difference]: Finished difference Result 287231 states and 331289 transitions. [2018-11-06 19:47:33,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:47:33,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 637 [2018-11-06 19:47:33,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:34,006 INFO L225 Difference]: With dead ends: 287231 [2018-11-06 19:47:34,006 INFO L226 Difference]: Without dead ends: 148394 [2018-11-06 19:47:34,079 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 637 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:47:34,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148394 states. [2018-11-06 19:47:35,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148394 to 134722. [2018-11-06 19:47:35,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134722 states. [2018-11-06 19:47:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134722 states to 134722 states and 147923 transitions. [2018-11-06 19:47:35,401 INFO L78 Accepts]: Start accepts. Automaton has 134722 states and 147923 transitions. Word has length 637 [2018-11-06 19:47:35,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:35,402 INFO L480 AbstractCegarLoop]: Abstraction has 134722 states and 147923 transitions. [2018-11-06 19:47:35,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:47:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 134722 states and 147923 transitions. [2018-11-06 19:47:35,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2018-11-06 19:47:35,435 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:35,436 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2018-11-06 19:47:35,437 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:35,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:35,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1824791197, now seen corresponding path program 1 times [2018-11-06 19:47:35,437 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:35,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:35,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:35,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:35,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:37,066 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-11-06 19:47:37,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:37,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:47:37,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:47:37,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:47:37,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:37,069 INFO L87 Difference]: Start difference. First operand 134722 states and 147923 transitions. Second operand 4 states. [2018-11-06 19:47:50,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:50,606 INFO L93 Difference]: Finished difference Result 360983 states and 397610 transitions. [2018-11-06 19:47:50,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:47:50,606 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 889 [2018-11-06 19:47:50,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:50,878 INFO L225 Difference]: With dead ends: 360983 [2018-11-06 19:47:50,878 INFO L226 Difference]: Without dead ends: 209829 [2018-11-06 19:47:50,961 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209829 states. [2018-11-06 19:47:53,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209829 to 204331. [2018-11-06 19:47:53,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204331 states. [2018-11-06 19:47:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204331 states to 204331 states and 220130 transitions. [2018-11-06 19:47:54,016 INFO L78 Accepts]: Start accepts. Automaton has 204331 states and 220130 transitions. Word has length 889 [2018-11-06 19:47:54,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:54,017 INFO L480 AbstractCegarLoop]: Abstraction has 204331 states and 220130 transitions. [2018-11-06 19:47:54,017 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:47:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 204331 states and 220130 transitions. [2018-11-06 19:47:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2018-11-06 19:47:54,031 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:54,032 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:47:54,032 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:54,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:54,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1910891187, now seen corresponding path program 1 times [2018-11-06 19:47:54,033 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:54,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:54,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:54,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:54,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2018-11-06 19:47:56,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:56,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:47:56,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:47:56,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:47:56,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:56,246 INFO L87 Difference]: Start difference. First operand 204331 states and 220130 transitions. Second operand 4 states. Received shutdown request... [2018-11-06 19:48:04,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:48:04,959 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:48:04,965 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:48:04,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:48:04 BoogieIcfgContainer [2018-11-06 19:48:04,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:48:04,967 INFO L168 Benchmark]: Toolchain (without parser) took 223668.12 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -755.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-06 19:48:04,968 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-11-06 19:48:04,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3537.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 998.5 MB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:48:04,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 1139.70 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 857.2 MB). Free memory was 998.5 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-06 19:48:04,971 INFO L168 Benchmark]: Boogie Preprocessor took 695.67 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 89.3 MB). Peak memory consumption was 89.3 MB. Max. memory is 7.1 GB. [2018-11-06 19:48:04,972 INFO L168 Benchmark]: RCFGBuilder took 16421.01 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 297.3 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -403.8 MB). Peak memory consumption was 844.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:48:04,973 INFO L168 Benchmark]: TraceAbstraction took 201869.85 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 892.3 MB). Free memory was 2.5 GB in the beginning and 2.2 GB in the end (delta: 300.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-06 19:48:04,978 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 3537.12 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 998.5 MB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1139.70 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 857.2 MB). Free memory was 998.5 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 695.67 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 89.3 MB). Peak memory consumption was 89.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16421.01 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 297.3 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -403.8 MB). Peak memory consumption was 844.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201869.85 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 892.3 MB). Free memory was 2.5 GB in the beginning and 2.2 GB in the end (delta: 300.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was constructing difference of abstraction (204331states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (126067 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 201.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 180.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9603 SDtfs, 48189 SDslu, 3984 SDs, 0 SdLazy, 95465 SolverSat, 20438 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 148.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1345 GetRequests, 1304 SyntacticMatches, 10 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204331occurred in iteration=7, 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: 8.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 97534 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 4973 NumberOfCodeBlocks, 4973 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4962 ConstructedInterpolants, 0 QuantifiedInterpolants, 8287882 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1589 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 2769/2842 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown