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-d380424 [2018-10-24 17:05:40,664 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:05:40,667 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:05:40,681 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:05:40,682 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:05:40,683 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:05:40,684 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:05:40,686 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:05:40,687 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:05:40,688 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:05:40,689 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:05:40,689 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:05:40,690 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:05:40,691 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:05:40,692 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:05:40,693 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:05:40,694 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:05:40,696 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:05:40,701 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:05:40,702 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:05:40,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:05:40,707 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:05:40,712 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:05:40,726 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 [2018-10-24 17:05:40,751 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:05:40,751 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:05:40,752 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:05:40,752 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:05:40,753 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:05:40,754 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:05:40,754 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:05:40,754 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:05:40,754 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:05:40,754 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:05:40,755 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:05:40,755 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:05:40,755 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:05:40,755 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:05:40,755 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:05:40,756 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:05:40,757 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:05:40,757 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:05:40,757 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:05:40,757 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:05:40,758 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:05:40,758 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:05:40,758 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:05:40,758 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:05:40,758 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:05:40,759 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:05:40,759 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:05:40,759 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:05:40,817 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:05:40,830 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:05:40,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:05:40,835 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:05:40,836 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:05:40,837 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c [2018-10-24 17:05:40,892 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e569c739d/a38ce4671b2a44c08a7f02e9796011c2/FLAGda06d2795 [2018-10-24 17:05:41,855 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:05:41,856 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label23_true-unreach-call.c [2018-10-24 17:05:41,912 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e569c739d/a38ce4671b2a44c08a7f02e9796011c2/FLAGda06d2795 [2018-10-24 17:05:41,929 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e569c739d/a38ce4671b2a44c08a7f02e9796011c2 [2018-10-24 17:05:41,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:05:41,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:05:41,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:05:41,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:05:41,953 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:05:41,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:05:41" (1/1) ... [2018-10-24 17:05:41,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:41, skipping insertion in model container [2018-10-24 17:05:41,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:05:41" (1/1) ... [2018-10-24 17:05:41,969 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:05:42,237 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:05:44,208 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:05:44,213 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:05:45,294 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:05:45,344 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:05:45,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45 WrapperNode [2018-10-24 17:05:45,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:05:45,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:05:45,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:05:45,347 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:05:45,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (1/1) ... [2018-10-24 17:05:45,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (1/1) ... [2018-10-24 17:05:46,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:05:46,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:05:46,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:05:46,591 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:05:46,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (1/1) ... [2018-10-24 17:05:46,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (1/1) ... [2018-10-24 17:05:46,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (1/1) ... [2018-10-24 17:05:46,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (1/1) ... [2018-10-24 17:05:47,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (1/1) ... [2018-10-24 17:05:47,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (1/1) ... [2018-10-24 17:05:47,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (1/1) ... [2018-10-24 17:05:47,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:05:47,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:05:47,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:05:47,683 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:05:47,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (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 [2018-10-24 17:05:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:05:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:05:47,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:06:05,029 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:06:05,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:06:05 BoogieIcfgContainer [2018-10-24 17:06:05,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:06:05,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:06:05,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:06:05,035 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:06:05,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:05:41" (1/3) ... [2018-10-24 17:06:05,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39739fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:06:05, skipping insertion in model container [2018-10-24 17:06:05,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:05:45" (2/3) ... [2018-10-24 17:06:05,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39739fb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:06:05, skipping insertion in model container [2018-10-24 17:06:05,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:06:05" (3/3) ... [2018-10-24 17:06:05,039 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label23_true-unreach-call.c [2018-10-24 17:06:05,051 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:06:05,063 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:06:05,083 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:06:05,134 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:06:05,135 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:06:05,135 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:06:05,135 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:06:05,135 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:06:05,135 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:06:05,135 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:06:05,136 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:06:05,136 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:06:05,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:06:05,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-24 17:06:05,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:05,200 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] [2018-10-24 17:06:05,203 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:05,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:05,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-10-24 17:06:05,213 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:05,214 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:05,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:05,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:05,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:05,794 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 17:06:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:06:05,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:05,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:06:05,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:05,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:05,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:05,841 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:06:33,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:33,570 INFO L93 Difference]: Finished difference Result 6431 states and 12286 transitions. [2018-10-24 17:06:33,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:06:33,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-24 17:06:33,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:33,630 INFO L225 Difference]: With dead ends: 6431 [2018-10-24 17:06:33,631 INFO L226 Difference]: Without dead ends: 4675 [2018-10-24 17:06:33,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4675 states. [2018-10-24 17:06:33,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4675 to 4581. [2018-10-24 17:06:33,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4581 states. [2018-10-24 17:06:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4581 states to 4581 states and 7890 transitions. [2018-10-24 17:06:33,854 INFO L78 Accepts]: Start accepts. Automaton has 4581 states and 7890 transitions. Word has length 53 [2018-10-24 17:06:33,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:33,855 INFO L481 AbstractCegarLoop]: Abstraction has 4581 states and 7890 transitions. [2018-10-24 17:06:33,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:33,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4581 states and 7890 transitions. [2018-10-24 17:06:33,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 17:06:33,861 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:33,862 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] [2018-10-24 17:06:33,862 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:33,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:33,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1222712374, now seen corresponding path program 1 times [2018-10-24 17:06:33,863 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:33,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:33,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:33,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:33,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:33,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:34,317 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:06:34,891 WARN L179 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-24 17:06:35,249 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 23 [2018-10-24 17:06:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:06:35,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:35,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:06:35,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:06:35,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:06:35,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:06:35,519 INFO L87 Difference]: Start difference. First operand 4581 states and 7890 transitions. Second operand 6 states. [2018-10-24 17:07:07,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:07,848 INFO L93 Difference]: Finished difference Result 17384 states and 28714 transitions. [2018-10-24 17:07:07,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:07:07,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 17:07:07,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:07,915 INFO L225 Difference]: With dead ends: 17384 [2018-10-24 17:07:07,915 INFO L226 Difference]: Without dead ends: 12805 [2018-10-24 17:07:07,923 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:07:07,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12805 states. [2018-10-24 17:07:08,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12805 to 11430. [2018-10-24 17:07:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11430 states. [2018-10-24 17:07:08,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11430 states to 11430 states and 17329 transitions. [2018-10-24 17:07:08,160 INFO L78 Accepts]: Start accepts. Automaton has 11430 states and 17329 transitions. Word has length 125 [2018-10-24 17:07:08,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:08,160 INFO L481 AbstractCegarLoop]: Abstraction has 11430 states and 17329 transitions. [2018-10-24 17:07:08,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:07:08,162 INFO L276 IsEmpty]: Start isEmpty. Operand 11430 states and 17329 transitions. [2018-10-24 17:07:08,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-24 17:07:08,172 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:08,177 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] [2018-10-24 17:07:08,177 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:08,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:08,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1620575188, now seen corresponding path program 1 times [2018-10-24 17:07:08,178 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:08,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:08,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:08,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:08,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:09,128 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 11 [2018-10-24 17:07:09,363 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-24 17:07:09,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:07:09,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:07:09,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:07:09,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:07:09,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:07:09,366 INFO L87 Difference]: Start difference. First operand 11430 states and 17329 transitions. Second operand 7 states. [2018-10-24 17:07:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:07:48,217 INFO L93 Difference]: Finished difference Result 35166 states and 54823 transitions. [2018-10-24 17:07:48,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:07:48,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2018-10-24 17:07:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:07:48,287 INFO L225 Difference]: With dead ends: 35166 [2018-10-24 17:07:48,287 INFO L226 Difference]: Without dead ends: 23738 [2018-10-24 17:07:48,302 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:07:48,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23738 states. [2018-10-24 17:07:48,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23738 to 19636. [2018-10-24 17:07:48,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19636 states. [2018-10-24 17:07:48,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19636 states to 19636 states and 26064 transitions. [2018-10-24 17:07:48,655 INFO L78 Accepts]: Start accepts. Automaton has 19636 states and 26064 transitions. Word has length 349 [2018-10-24 17:07:48,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:07:48,656 INFO L481 AbstractCegarLoop]: Abstraction has 19636 states and 26064 transitions. [2018-10-24 17:07:48,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:07:48,657 INFO L276 IsEmpty]: Start isEmpty. Operand 19636 states and 26064 transitions. [2018-10-24 17:07:48,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-10-24 17:07:48,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:07:48,663 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] [2018-10-24 17:07:48,663 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:07:48,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:07:48,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1938607278, now seen corresponding path program 1 times [2018-10-24 17:07:48,664 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:07:48,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:07:48,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:48,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:48,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:07:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 101 proven. 4 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-24 17:07:49,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:07:49,299 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 [2018-10-24 17:07:49,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:49,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:07:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:07:49,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:07:49,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 17:07:49,618 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:07:49,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:07:49,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:07:49,619 INFO L87 Difference]: Start difference. First operand 19636 states and 26064 transitions. Second operand 5 states. [2018-10-24 17:08:28,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:08:28,879 INFO L93 Difference]: Finished difference Result 103731 states and 147636 transitions. [2018-10-24 17:08:28,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:08:28,880 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 377 [2018-10-24 17:08:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:08:29,047 INFO L225 Difference]: With dead ends: 103731 [2018-10-24 17:08:29,048 INFO L226 Difference]: Without dead ends: 85463 [2018-10-24 17:08:29,080 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 [2018-10-24 17:08:29,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85463 states. [2018-10-24 17:08:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85463 to 55148. [2018-10-24 17:08:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55148 states. [2018-10-24 17:08:30,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55148 states to 55148 states and 69979 transitions. [2018-10-24 17:08:30,176 INFO L78 Accepts]: Start accepts. Automaton has 55148 states and 69979 transitions. Word has length 377 [2018-10-24 17:08:30,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:08:30,176 INFO L481 AbstractCegarLoop]: Abstraction has 55148 states and 69979 transitions. [2018-10-24 17:08:30,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:08:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 55148 states and 69979 transitions. [2018-10-24 17:08:30,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2018-10-24 17:08:30,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:08:30,187 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] [2018-10-24 17:08:30,187 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:08:30,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:08:30,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1789369963, now seen corresponding path program 1 times [2018-10-24 17:08:30,188 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:08:30,188 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:08:30,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:30,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:30,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:08:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 238 proven. 65 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-24 17:08:30,696 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:08:30,697 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 [2018-10-24 17:08:30,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:08:30,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:08:30,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:08:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-10-24 17:08:30,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:08:30,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 17:08:30,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:08:30,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:08:30,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:08:30,954 INFO L87 Difference]: Start difference. First operand 55148 states and 69979 transitions. Second operand 5 states. [2018-10-24 17:09:05,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:05,853 INFO L93 Difference]: Finished difference Result 222669 states and 295346 transitions. [2018-10-24 17:09:05,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:09:05,854 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 429 [2018-10-24 17:09:05,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:06,098 INFO L225 Difference]: With dead ends: 222669 [2018-10-24 17:09:06,098 INFO L226 Difference]: Without dead ends: 163423 [2018-10-24 17:09:06,181 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 [2018-10-24 17:09:06,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163423 states. [2018-10-24 17:09:07,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163423 to 160599. [2018-10-24 17:09:07,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160599 states. [2018-10-24 17:09:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160599 states to 160599 states and 188063 transitions. [2018-10-24 17:09:07,797 INFO L78 Accepts]: Start accepts. Automaton has 160599 states and 188063 transitions. Word has length 429 [2018-10-24 17:09:07,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:07,798 INFO L481 AbstractCegarLoop]: Abstraction has 160599 states and 188063 transitions. [2018-10-24 17:09:07,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:09:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 160599 states and 188063 transitions. [2018-10-24 17:09:07,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2018-10-24 17:09:07,822 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:07,823 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] [2018-10-24 17:09:07,823 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:07,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:07,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1041195184, now seen corresponding path program 1 times [2018-10-24 17:09:07,824 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:07,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:07,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:07,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:07,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:08,562 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 17:09:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 101 proven. 72 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2018-10-24 17:09:09,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:09:09,800 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 [2018-10-24 17:09:09,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:10,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:09:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2018-10-24 17:09:10,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:09:10,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 17:09:10,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:09:10,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:09:10,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:09:10,786 INFO L87 Difference]: Start difference. First operand 160599 states and 188063 transitions. Second operand 5 states. [2018-10-24 17:09:31,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:09:31,992 INFO L93 Difference]: Finished difference Result 397694 states and 470256 transitions. [2018-10-24 17:09:31,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:09:31,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 775 [2018-10-24 17:09:31,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:09:32,323 INFO L225 Difference]: With dead ends: 397694 [2018-10-24 17:09:32,323 INFO L226 Difference]: Without dead ends: 238463 [2018-10-24 17:09:32,438 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 [2018-10-24 17:09:32,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238463 states. [2018-10-24 17:09:35,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238463 to 237090. [2018-10-24 17:09:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237090 states. [2018-10-24 17:09:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237090 states to 237090 states and 269659 transitions. [2018-10-24 17:09:35,345 INFO L78 Accepts]: Start accepts. Automaton has 237090 states and 269659 transitions. Word has length 775 [2018-10-24 17:09:35,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:09:35,346 INFO L481 AbstractCegarLoop]: Abstraction has 237090 states and 269659 transitions. [2018-10-24 17:09:35,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:09:35,346 INFO L276 IsEmpty]: Start isEmpty. Operand 237090 states and 269659 transitions. [2018-10-24 17:09:35,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 989 [2018-10-24 17:09:35,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:09:35,388 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] [2018-10-24 17:09:35,389 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:09:35,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:09:35,389 INFO L82 PathProgramCache]: Analyzing trace with hash -74924354, now seen corresponding path program 1 times [2018-10-24 17:09:35,389 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:09:35,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:09:35,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:35,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:35,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:09:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:37,013 WARN L179 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 14 [2018-10-24 17:09:37,338 WARN L179 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 17 Received shutdown request... [2018-10-24 17:09:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 806 backedges. 149 proven. 657 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:09:41,548 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:09:41,548 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:09:41,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:09:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:09:41,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:09:41,833 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 17:09:42,034 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:09:42,034 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:09:42,041 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:09:42,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:09:42 BoogieIcfgContainer [2018-10-24 17:09:42,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:09:42,043 INFO L168 Benchmark]: Toolchain (without parser) took 240099.11 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -103.6 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 17:09:42,045 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:09:42,045 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3398.81 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. [2018-10-24 17:09:42,046 INFO L168 Benchmark]: Boogie Procedure Inliner took 1243.90 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:42,052 INFO L168 Benchmark]: Boogie Preprocessor took 1092.01 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: 98.5 MB). Peak memory consumption was 98.5 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:42,052 INFO L168 Benchmark]: RCFGBuilder took 17347.10 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 287.8 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -386.8 MB). Peak memory consumption was 815.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:09:42,058 INFO L168 Benchmark]: TraceAbstraction took 217010.25 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 829.9 MB). Free memory was 2.4 GB in the beginning and 1.5 GB in the end (delta: 919.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 17:09:42,067 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3398.81 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 1243.90 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1092.01 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: 98.5 MB). Peak memory consumption was 98.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17347.10 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 287.8 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -386.8 MB). Peak memory consumption was 815.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217010.25 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 829.9 MB). Free memory was 2.4 GB in the beginning and 1.5 GB in the end (delta: 919.0 MB). Peak memory consumption was 1.7 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 TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 10 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 216.9s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 195.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6956 SDtfs, 45204 SDslu, 3671 SDs, 0 SdLazy, 80290 SolverSat, 28039 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 165.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1620 GetRequests, 1585 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.9s 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: 6.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 40083 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.3s 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