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/Problem19_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:01:59,969 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:01:59,973 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:01:59,990 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:01:59,990 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:01:59,991 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:01:59,992 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:01:59,994 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:01:59,996 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:01:59,997 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:01:59,998 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:01:59,998 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:01:59,999 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:02:00,000 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:02:00,001 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:02:00,002 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:02:00,003 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:02:00,005 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:02:00,007 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:02:00,009 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:02:00,010 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:02:00,011 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:02:00,013 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 21:02:00,023 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 21:02:00,038 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:02:00,039 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:02:00,040 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:02:00,041 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 21:02:00,041 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 21:02:00,041 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 21:02:00,042 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 21:02:00,042 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:02:00,042 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:02:00,042 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:02:00,042 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:02:00,043 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:02:00,043 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:02:00,043 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:02:00,043 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:02:00,043 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:02:00,044 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:02:00,044 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:02:00,044 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:02:00,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:02:00,045 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:02:00,045 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:02:00,045 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:02:00,045 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 21:02:00,045 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:02:00,045 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:02:00,046 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:02:00,046 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:02:00,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:02:00,110 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:02:00,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:02:00,116 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:02:00,116 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:02:00,117 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c [2018-10-23 21:02:00,194 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/93b5e9abd/1be47b979f084431a0e9d536e345ec89/FLAGca3cdbc79 [2018-10-23 21:02:01,116 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:02:01,117 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c [2018-10-23 21:02:01,161 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/93b5e9abd/1be47b979f084431a0e9d536e345ec89/FLAGca3cdbc79 [2018-10-23 21:02:01,177 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/93b5e9abd/1be47b979f084431a0e9d536e345ec89 [2018-10-23 21:02:01,189 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:02:01,190 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:02:01,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:02:01,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:02:01,198 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:02:01,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:02:01" (1/1) ... [2018-10-23 21:02:01,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a99fc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:01, skipping insertion in model container [2018-10-23 21:02:01,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:02:01" (1/1) ... [2018-10-23 21:02:01,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:02:01,463 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:02:03,400 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:02:03,404 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:02:04,495 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:02:04,555 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:02:04,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04 WrapperNode [2018-10-23 21:02:04,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:02:04,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:02:04,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:02:04,558 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:02:04,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (1/1) ... [2018-10-23 21:02:04,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (1/1) ... [2018-10-23 21:02:05,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:02:05,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:02:05,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:02:05,783 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:02:05,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (1/1) ... [2018-10-23 21:02:05,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (1/1) ... [2018-10-23 21:02:05,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (1/1) ... [2018-10-23 21:02:05,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (1/1) ... [2018-10-23 21:02:06,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (1/1) ... [2018-10-23 21:02:06,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (1/1) ... [2018-10-23 21:02:06,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (1/1) ... [2018-10-23 21:02:06,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:02:06,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:02:06,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:02:06,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:02:06,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (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 21:02:06,549 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 21:02:06,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:02:06,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:02:24,461 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:02:24,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:02:24 BoogieIcfgContainer [2018-10-23 21:02:24,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:02:24,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:02:24,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:02:24,467 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:02:24,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:02:01" (1/3) ... [2018-10-23 21:02:24,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245493c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:02:24, skipping insertion in model container [2018-10-23 21:02:24,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:02:04" (2/3) ... [2018-10-23 21:02:24,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245493c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:02:24, skipping insertion in model container [2018-10-23 21:02:24,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:02:24" (3/3) ... [2018-10-23 21:02:24,473 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label23_true-unreach-call.c [2018-10-23 21:02:24,483 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:02:24,495 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:02:24,512 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:02:24,562 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 21:02:24,563 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:02:24,563 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:02:24,563 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:02:24,563 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:02:24,564 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:02:24,564 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:02:24,564 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:02:24,564 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:02:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 21:02:24,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-23 21:02:24,628 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:02:24,629 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:02:24,632 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:02:24,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:02:24,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-10-23 21:02:24,642 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:02:24,643 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:02:24,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:24,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:02:24,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:02:25,369 WARN L179 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 21:02:25,382 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 21:02:25,385 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:02:25,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:02:25,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:02:25,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:02:25,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:02:25,409 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 21:02:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:02:54,702 INFO L93 Difference]: Finished difference Result 6431 states and 12286 transitions. [2018-10-23 21:02:54,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:02:54,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-23 21:02:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:02:54,762 INFO L225 Difference]: With dead ends: 6431 [2018-10-23 21:02:54,762 INFO L226 Difference]: Without dead ends: 4675 [2018-10-23 21:02:54,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:02:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2018-10-23 21:02:54,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4581. [2018-10-23 21:02:54,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4581 states. [2018-10-23 21:02:54,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 7890 transitions. [2018-10-23 21:02:54,988 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 7890 transitions. Word has length 53 [2018-10-23 21:02:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:02:54,989 INFO L481 AbstractCegarLoop]: Abstraction has 4581 states and 7890 transitions. [2018-10-23 21:02:54,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:02:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 7890 transitions. [2018-10-23 21:02:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-23 21:02:54,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:02:55,000 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 21:02:55,000 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:02:55,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:02:55,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1222712374, now seen corresponding path program 1 times [2018-10-23 21:02:55,001 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:02:55,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:02:55,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:55,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:02:55,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:02:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:02:55,493 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 21:02:56,059 WARN L179 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-23 21:02:56,493 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-10-23 21:02:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:02:56,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:02:56,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 21:02:56,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:02:56,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:02:56,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:02:56,667 INFO L87 Difference]: Start difference. First operand 4581 states and 7890 transitions. Second operand 6 states. [2018-10-23 21:03:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:03:27,437 INFO L93 Difference]: Finished difference Result 17384 states and 28714 transitions. [2018-10-23 21:03:27,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 21:03:27,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-23 21:03:27,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:03:27,500 INFO L225 Difference]: With dead ends: 17384 [2018-10-23 21:03:27,500 INFO L226 Difference]: Without dead ends: 12805 [2018-10-23 21:03:27,508 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 21:03:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2018-10-23 21:03:27,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 11430. [2018-10-23 21:03:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2018-10-23 21:03:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 17329 transitions. [2018-10-23 21:03:27,725 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 17329 transitions. Word has length 125 [2018-10-23 21:03:27,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:03:27,726 INFO L481 AbstractCegarLoop]: Abstraction has 11430 states and 17329 transitions. [2018-10-23 21:03:27,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:03:27,726 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 17329 transitions. [2018-10-23 21:03:27,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-23 21:03:27,743 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:03:27,744 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:03:27,744 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:03:27,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:03:27,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1620575188, now seen corresponding path program 1 times [2018-10-23 21:03:27,748 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:03:27,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:03:27,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:27,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:03:27,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:03:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:03:28,359 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 21:03:28,887 WARN L179 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-23 21:03:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-23 21:03:29,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:03:29,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:03:29,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 21:03:29,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 21:03:29,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:03:29,211 INFO L87 Difference]: Start difference. First operand 11430 states and 17329 transitions. Second operand 7 states. [2018-10-23 21:04:05,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:04:05,615 INFO L93 Difference]: Finished difference Result 35166 states and 54823 transitions. [2018-10-23 21:04:05,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:04:05,616 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2018-10-23 21:04:05,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:04:05,686 INFO L225 Difference]: With dead ends: 35166 [2018-10-23 21:04:05,686 INFO L226 Difference]: Without dead ends: 23738 [2018-10-23 21:04:05,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-23 21:04:05,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23738 states. [2018-10-23 21:04:05,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23738 to 19636. [2018-10-23 21:04:05,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19636 states. [2018-10-23 21:04:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19636 states to 19636 states and 26064 transitions. [2018-10-23 21:04:06,014 INFO L78 Accepts]: Start accepts. Automaton has 19636 states and 26064 transitions. Word has length 349 [2018-10-23 21:04:06,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:04:06,015 INFO L481 AbstractCegarLoop]: Abstraction has 19636 states and 26064 transitions. [2018-10-23 21:04:06,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 21:04:06,015 INFO L276 IsEmpty]: Start isEmpty. Operand 19636 states and 26064 transitions. [2018-10-23 21:04:06,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-23 21:04:06,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:04:06,024 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:06,026 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:04:06,026 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:04:06,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1938607278, now seen corresponding path program 1 times [2018-10-23 21:04:06,026 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:04:06,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:04:06,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:04:06,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:04:06,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:04:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:04:06,486 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 101 proven. 4 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-23 21:04:06,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:04:06,486 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 21:04:06,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:04:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:04:06,632 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:04:06,848 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:04:06,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:04:06,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 21:04:06,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 21:04:06,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 21:04:06,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:04:06,872 INFO L87 Difference]: Start difference. First operand 19636 states and 26064 transitions. Second operand 5 states. [2018-10-23 21:04:46,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:04:46,056 INFO L93 Difference]: Finished difference Result 103731 states and 147636 transitions. [2018-10-23 21:04:46,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:04:46,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2018-10-23 21:04:46,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:04:46,236 INFO L225 Difference]: With dead ends: 103731 [2018-10-23 21:04:46,236 INFO L226 Difference]: Without dead ends: 85463 [2018-10-23 21:04:46,269 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:04:46,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85463 states. [2018-10-23 21:04:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85463 to 55148. [2018-10-23 21:04:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55148 states. [2018-10-23 21:04:47,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55148 states to 55148 states and 69979 transitions. [2018-10-23 21:04:47,505 INFO L78 Accepts]: Start accepts. Automaton has 55148 states and 69979 transitions. Word has length 377 [2018-10-23 21:04:47,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:04:47,506 INFO L481 AbstractCegarLoop]: Abstraction has 55148 states and 69979 transitions. [2018-10-23 21:04:47,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 21:04:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 55148 states and 69979 transitions. [2018-10-23 21:04:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-10-23 21:04:47,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:04:47,516 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 21:04:47,517 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:04:47,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:04:47,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1789369963, now seen corresponding path program 1 times [2018-10-23 21:04:47,517 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:04:47,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:04:47,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:04:47,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:04:47,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:04:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:04:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 238 proven. 65 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-23 21:04:48,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:04:48,064 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 21:04:48,081 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:04:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:04:48,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:04:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-23 21:04:48,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:04:48,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-23 21:04:48,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 21:04:48,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 21:04:48,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:04:48,459 INFO L87 Difference]: Start difference. First operand 55148 states and 69979 transitions. Second operand 5 states. [2018-10-23 21:05:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:05:26,487 INFO L93 Difference]: Finished difference Result 222669 states and 295346 transitions. [2018-10-23 21:05:26,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:05:26,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 429 [2018-10-23 21:05:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:05:26,721 INFO L225 Difference]: With dead ends: 222669 [2018-10-23 21:05:26,721 INFO L226 Difference]: Without dead ends: 163423 [2018-10-23 21:05:26,792 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:05:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163423 states. [2018-10-23 21:05:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163423 to 160599. [2018-10-23 21:05:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160599 states. [2018-10-23 21:05:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160599 states to 160599 states and 188063 transitions. [2018-10-23 21:05:28,570 INFO L78 Accepts]: Start accepts. Automaton has 160599 states and 188063 transitions. Word has length 429 [2018-10-23 21:05:28,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:05:28,571 INFO L481 AbstractCegarLoop]: Abstraction has 160599 states and 188063 transitions. [2018-10-23 21:05:28,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 21:05:28,571 INFO L276 IsEmpty]: Start isEmpty. Operand 160599 states and 188063 transitions. [2018-10-23 21:05:28,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2018-10-23 21:05:28,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:05:28,603 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:05:28,603 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:05:28,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:05:28,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1041195184, now seen corresponding path program 1 times [2018-10-23 21:05:28,604 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:05:28,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:05:28,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:28,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:05:28,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:05:29,355 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-23 21:05:30,497 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 101 proven. 72 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2018-10-23 21:05:30,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:05:30,497 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 21:05:30,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:05:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:05:30,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 21:05:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-10-23 21:05:31,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:05:31,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 21:05:31,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 21:05:31,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 21:05:31,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:05:31,448 INFO L87 Difference]: Start difference. First operand 160599 states and 188063 transitions. Second operand 5 states. [2018-10-23 21:05:53,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:05:53,463 INFO L93 Difference]: Finished difference Result 397694 states and 470256 transitions. [2018-10-23 21:05:53,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:05:53,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 775 [2018-10-23 21:05:53,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:05:53,734 INFO L225 Difference]: With dead ends: 397694 [2018-10-23 21:05:53,735 INFO L226 Difference]: Without dead ends: 238463 [2018-10-23 21:05:53,842 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 774 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:05:54,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238463 states. [2018-10-23 21:05:56,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238463 to 237090. [2018-10-23 21:05:56,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237090 states. [2018-10-23 21:05:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237090 states to 237090 states and 269659 transitions. [2018-10-23 21:05:56,623 INFO L78 Accepts]: Start accepts. Automaton has 237090 states and 269659 transitions. Word has length 775 [2018-10-23 21:05:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:05:56,624 INFO L481 AbstractCegarLoop]: Abstraction has 237090 states and 269659 transitions. [2018-10-23 21:05:56,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 21:05:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 237090 states and 269659 transitions. [2018-10-23 21:05:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-10-23 21:05:56,670 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:05:56,671 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:05:56,672 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:05:56,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:05:56,672 INFO L82 PathProgramCache]: Analyzing trace with hash -74924354, now seen corresponding path program 1 times [2018-10-23 21:05:56,672 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:05:56,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:05:56,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:56,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:05:56,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-23 21:05:57,852 WARN L187 SmtUtils]: Removed 5 from assertion stack [2018-10-23 21:05:57,854 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:05:57,858 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:05:57,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:05:57 BoogieIcfgContainer [2018-10-23 21:05:57,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:05:57,860 INFO L168 Benchmark]: Toolchain (without parser) took 236670.41 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -187.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-23 21:05:57,861 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. [2018-10-23 21:05:57,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3364.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:05:57,862 INFO L168 Benchmark]: Boogie Procedure Inliner took 1224.74 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 876.6 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-23 21:05:57,863 INFO L168 Benchmark]: Boogie Preprocessor took 700.11 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.6 MB). Peak memory consumption was 101.6 MB. Max. memory is 7.1 GB. [2018-10-23 21:05:57,864 INFO L168 Benchmark]: RCFGBuilder took 17978.66 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 259.0 MB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 523.1 MB). Peak memory consumption was 782.1 MB. Max. memory is 7.1 GB. [2018-10-23 21:05:57,865 INFO L168 Benchmark]: TraceAbstraction took 213395.55 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -50.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 21:05:57,870 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 3364.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1224.74 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 876.6 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 700.11 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 101.6 MB). Peak memory consumption was 101.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17978.66 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 259.0 MB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 523.1 MB). Peak memory consumption was 782.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213395.55 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -50.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 172]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 172). Cancelled while BasicCegarLoop was analyzing trace of length 989 with TraceHistMax 4,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 24. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 213.3s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 196.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6956 SDtfs, 45204 SDslu, 3671 SDs, 0 SdLazy, 80287 SolverSat, 28039 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 168.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1620 GetRequests, 1585 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237090occurred in iteration=6, 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: 6.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 40083 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 3689 NumberOfCodeBlocks, 3689 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3680 ConstructedInterpolants, 0 QuantifiedInterpolants, 6674394 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1881 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 1849/1990 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown