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/Problem13_label07_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:12:01,873 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:12:01,875 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:12:01,890 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:12:01,891 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:12:01,892 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:12:01,893 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:12:01,895 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:12:01,899 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:12:01,900 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:12:01,901 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:12:01,901 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:12:01,902 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:12:01,903 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:12:01,904 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:12:01,905 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:12:01,906 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:12:01,912 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:12:01,914 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:12:01,915 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:12:01,920 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:12:01,921 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:12:01,926 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 19:12:01,940 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 [2018-10-26 19:12:01,964 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:12:01,964 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:12:01,968 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:12:01,968 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:12:01,969 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:12:01,969 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:12:01,969 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:12:01,970 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:12:01,970 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:12:01,970 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:12:01,970 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:12:01,970 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:12:01,972 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:12:01,972 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:12:01,973 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:12:01,973 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:12:01,973 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:12:01,973 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:12:01,973 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:12:01,974 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:12:01,974 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:12:01,974 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:12:01,974 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:12:01,974 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:12:01,975 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:12:01,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:12:01,975 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:12:01,975 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:12:02,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:12:02,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:12:02,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:12:02,051 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:12:02,052 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:12:02,052 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label07_false-unreach-call.c [2018-10-26 19:12:02,122 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fbe068adc/4188dfe6edb44284b6425450bcb49b9b/FLAG0e12b8fe2 [2018-10-26 19:12:02,972 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:12:02,973 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label07_false-unreach-call.c [2018-10-26 19:12:03,010 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fbe068adc/4188dfe6edb44284b6425450bcb49b9b/FLAG0e12b8fe2 [2018-10-26 19:12:03,027 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/fbe068adc/4188dfe6edb44284b6425450bcb49b9b [2018-10-26 19:12:03,040 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:12:03,042 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:12:03,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:12:03,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:12:03,047 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:12:03,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:12:03" (1/1) ... [2018-10-26 19:12:03,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26998074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:03, skipping insertion in model container [2018-10-26 19:12:03,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:12:03" (1/1) ... [2018-10-26 19:12:03,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:12:03,235 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:12:04,727 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:12:04,731 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:12:05,809 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:12:05,848 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:12:05,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05 WrapperNode [2018-10-26 19:12:05,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:12:05,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:12:05,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:12:05,850 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:12:05,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (1/1) ... [2018-10-26 19:12:05,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (1/1) ... [2018-10-26 19:12:06,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:12:06,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:12:06,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:12:06,655 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:12:06,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (1/1) ... [2018-10-26 19:12:06,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (1/1) ... [2018-10-26 19:12:06,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (1/1) ... [2018-10-26 19:12:06,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (1/1) ... [2018-10-26 19:12:06,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (1/1) ... [2018-10-26 19:12:07,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (1/1) ... [2018-10-26 19:12:07,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (1/1) ... [2018-10-26 19:12:07,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:12:07,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:12:07,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:12:07,201 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:12:07,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (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 [2018-10-26 19:12:07,273 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:12:07,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:12:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:12:22,417 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:12:22,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:12:22 BoogieIcfgContainer [2018-10-26 19:12:22,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:12:22,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:12:22,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:12:22,422 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:12:22,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:12:03" (1/3) ... [2018-10-26 19:12:22,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332744d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:12:22, skipping insertion in model container [2018-10-26 19:12:22,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:12:05" (2/3) ... [2018-10-26 19:12:22,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@332744d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:12:22, skipping insertion in model container [2018-10-26 19:12:22,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:12:22" (3/3) ... [2018-10-26 19:12:22,426 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label07_false-unreach-call.c [2018-10-26 19:12:22,435 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:12:22,445 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:12:22,462 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:12:22,509 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:12:22,509 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:12:22,509 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:12:22,510 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:12:22,510 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:12:22,510 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:12:22,510 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:12:22,510 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:12:22,510 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:12:22,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 19:12:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 19:12:22,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:22,561 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] [2018-10-26 19:12:22,563 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:22,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:22,570 INFO L82 PathProgramCache]: Analyzing trace with hash 682595178, now seen corresponding path program 1 times [2018-10-26 19:12:22,571 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:22,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:22,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:22,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:22,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:22,937 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-26 19:12:22,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:12:22,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:22,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:12:22,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:12:22,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:12:22,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:12:22,971 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 19:12:37,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:37,577 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-26 19:12:37,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:12:37,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-26 19:12:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:37,625 INFO L225 Difference]: With dead ends: 3896 [2018-10-26 19:12:37,625 INFO L226 Difference]: Without dead ends: 2790 [2018-10-26 19:12:37,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:12:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-26 19:12:37,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-26 19:12:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-26 19:12:37,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-26 19:12:37,818 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 22 [2018-10-26 19:12:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:37,818 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-26 19:12:37,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:12:37,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-26 19:12:37,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-26 19:12:37,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:37,825 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:12:37,825 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:37,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:37,826 INFO L82 PathProgramCache]: Analyzing trace with hash -267031502, now seen corresponding path program 1 times [2018-10-26 19:12:37,826 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:37,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:37,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:37,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:37,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:12:38,644 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:12:38,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:12:38,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:12:38,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:12:38,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:12:38,647 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-26 19:12:55,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:12:55,437 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-26 19:12:55,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:12:55,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-10-26 19:12:55,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:12:55,466 INFO L225 Difference]: With dead ends: 7061 [2018-10-26 19:12:55,466 INFO L226 Difference]: Without dead ends: 5118 [2018-10-26 19:12:55,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:12:55,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-26 19:12:55,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-26 19:12:55,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-26 19:12:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-26 19:12:55,575 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 88 [2018-10-26 19:12:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:12:55,575 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-26 19:12:55,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:12:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-26 19:12:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-26 19:12:55,582 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:12:55,582 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 19:12:55,582 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:12:55,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:12:55,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1398070453, now seen corresponding path program 1 times [2018-10-26 19:12:55,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:12:55,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:12:55,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:55,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:55,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:12:55,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-26 19:12:56,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:12:56,100 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 [2018-10-26 19:12:56,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:12:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:12:56,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:12:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-26 19:12:56,413 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:12:56,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 19:12:56,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:12:56,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:12:56,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:12:56,417 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-10-26 19:13:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:11,854 INFO L93 Difference]: Finished difference Result 15794 states and 24946 transitions. [2018-10-26 19:13:11,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:13:11,860 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2018-10-26 19:13:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:11,917 INFO L225 Difference]: With dead ends: 15794 [2018-10-26 19:13:11,917 INFO L226 Difference]: Without dead ends: 11467 [2018-10-26 19:13:11,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:13:11,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11467 states. [2018-10-26 19:13:12,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11467 to 11436. [2018-10-26 19:13:12,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11436 states. [2018-10-26 19:13:12,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 15909 transitions. [2018-10-26 19:13:12,156 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 15909 transitions. Word has length 148 [2018-10-26 19:13:12,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:12,157 INFO L481 AbstractCegarLoop]: Abstraction has 11436 states and 15909 transitions. [2018-10-26 19:13:12,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:13:12,158 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 15909 transitions. [2018-10-26 19:13:12,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-26 19:13:12,167 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:12,167 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:12,167 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:12,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:12,171 INFO L82 PathProgramCache]: Analyzing trace with hash 801482757, now seen corresponding path program 1 times [2018-10-26 19:13:12,171 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:12,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:12,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:12,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:12,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:13:12,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:12,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:13:12,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:12,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:12,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:12,590 INFO L87 Difference]: Start difference. First operand 11436 states and 15909 transitions. Second operand 4 states. [2018-10-26 19:13:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:23,853 INFO L93 Difference]: Finished difference Result 28418 states and 40800 transitions. [2018-10-26 19:13:23,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:13:23,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2018-10-26 19:13:23,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:23,913 INFO L225 Difference]: With dead ends: 28418 [2018-10-26 19:13:23,913 INFO L226 Difference]: Without dead ends: 17772 [2018-10-26 19:13:23,931 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17772 states. [2018-10-26 19:13:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17772 to 17746. [2018-10-26 19:13:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17746 states. [2018-10-26 19:13:24,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17746 states to 17746 states and 23792 transitions. [2018-10-26 19:13:24,183 INFO L78 Accepts]: Start accepts. Automaton has 17746 states and 23792 transitions. Word has length 218 [2018-10-26 19:13:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:24,184 INFO L481 AbstractCegarLoop]: Abstraction has 17746 states and 23792 transitions. [2018-10-26 19:13:24,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:13:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 17746 states and 23792 transitions. [2018-10-26 19:13:24,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-26 19:13:24,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:24,192 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:24,192 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:24,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:24,193 INFO L82 PathProgramCache]: Analyzing trace with hash 809504239, now seen corresponding path program 1 times [2018-10-26 19:13:24,193 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:24,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:24,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:24,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:24,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:24,596 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-26 19:13:24,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:24,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 19:13:24,597 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:13:24,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:13:24,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:13:24,598 INFO L87 Difference]: Start difference. First operand 17746 states and 23792 transitions. Second operand 3 states. [2018-10-26 19:13:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:31,213 INFO L93 Difference]: Finished difference Result 50457 states and 68401 transitions. [2018-10-26 19:13:31,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:13:31,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2018-10-26 19:13:31,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:31,283 INFO L225 Difference]: With dead ends: 50457 [2018-10-26 19:13:31,283 INFO L226 Difference]: Without dead ends: 33501 [2018-10-26 19:13:31,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:13:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33501 states. [2018-10-26 19:13:31,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33501 to 33500. [2018-10-26 19:13:31,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33500 states. [2018-10-26 19:13:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33500 states to 33500 states and 42101 transitions. [2018-10-26 19:13:31,993 INFO L78 Accepts]: Start accepts. Automaton has 33500 states and 42101 transitions. Word has length 308 [2018-10-26 19:13:31,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:31,994 INFO L481 AbstractCegarLoop]: Abstraction has 33500 states and 42101 transitions. [2018-10-26 19:13:31,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:13:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 33500 states and 42101 transitions. [2018-10-26 19:13:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-26 19:13:32,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:32,007 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-26 19:13:32,007 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:32,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:32,008 INFO L82 PathProgramCache]: Analyzing trace with hash 751929461, now seen corresponding path program 1 times [2018-10-26 19:13:32,008 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:32,008 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:32,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:32,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:32,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:32,390 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-26 19:13:32,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:32,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:13:32,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:32,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:32,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:32,391 INFO L87 Difference]: Start difference. First operand 33500 states and 42101 transitions. Second operand 4 states. [2018-10-26 19:13:40,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:40,623 INFO L93 Difference]: Finished difference Result 71704 states and 91193 transitions. [2018-10-26 19:13:40,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:13:40,624 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2018-10-26 19:13:40,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:40,682 INFO L225 Difference]: With dead ends: 71704 [2018-10-26 19:13:40,683 INFO L226 Difference]: Without dead ends: 38994 [2018-10-26 19:13:40,720 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:40,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38994 states. [2018-10-26 19:13:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38994 to 38993. [2018-10-26 19:13:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38993 states. [2018-10-26 19:13:41,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38993 states to 38993 states and 46093 transitions. [2018-10-26 19:13:41,587 INFO L78 Accepts]: Start accepts. Automaton has 38993 states and 46093 transitions. Word has length 339 [2018-10-26 19:13:41,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:41,588 INFO L481 AbstractCegarLoop]: Abstraction has 38993 states and 46093 transitions. [2018-10-26 19:13:41,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:13:41,588 INFO L276 IsEmpty]: Start isEmpty. Operand 38993 states and 46093 transitions. [2018-10-26 19:13:41,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-26 19:13:41,608 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:41,609 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:13:41,609 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:41,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:41,611 INFO L82 PathProgramCache]: Analyzing trace with hash 11430192, now seen corresponding path program 1 times [2018-10-26 19:13:41,611 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:41,611 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:41,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:41,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:41,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:41,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:41,994 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-26 19:13:41,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:41,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:13:41,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:13:42,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:13:42,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:13:42,000 INFO L87 Difference]: Start difference. First operand 38993 states and 46093 transitions. Second operand 3 states. [2018-10-26 19:13:47,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:47,654 INFO L93 Difference]: Finished difference Result 77183 states and 91260 transitions. [2018-10-26 19:13:47,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:13:47,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 412 [2018-10-26 19:13:47,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:47,723 INFO L225 Difference]: With dead ends: 77183 [2018-10-26 19:13:47,723 INFO L226 Difference]: Without dead ends: 38980 [2018-10-26 19:13:47,752 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:13:47,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38980 states. [2018-10-26 19:13:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38980 to 38979. [2018-10-26 19:13:48,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38979 states. [2018-10-26 19:13:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38979 states to 38979 states and 43637 transitions. [2018-10-26 19:13:48,181 INFO L78 Accepts]: Start accepts. Automaton has 38979 states and 43637 transitions. Word has length 412 [2018-10-26 19:13:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:48,182 INFO L481 AbstractCegarLoop]: Abstraction has 38979 states and 43637 transitions. [2018-10-26 19:13:48,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:13:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 38979 states and 43637 transitions. [2018-10-26 19:13:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-26 19:13:48,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:48,201 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 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] [2018-10-26 19:13:48,201 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:48,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:48,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1763756656, now seen corresponding path program 1 times [2018-10-26 19:13:48,202 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:48,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:48,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:48,203 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:48,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:48,717 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:13:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-26 19:13:48,939 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:13:48,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:13:48,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:13:48,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:13:48,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:48,941 INFO L87 Difference]: Start difference. First operand 38979 states and 43637 transitions. Second operand 4 states. [2018-10-26 19:13:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:13:57,780 INFO L93 Difference]: Finished difference Result 84261 states and 94220 transitions. [2018-10-26 19:13:57,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:13:57,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2018-10-26 19:13:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:13:57,835 INFO L225 Difference]: With dead ends: 84261 [2018-10-26 19:13:57,835 INFO L226 Difference]: Without dead ends: 46072 [2018-10-26 19:13:57,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:13:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46072 states. [2018-10-26 19:13:58,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46072 to 44495. [2018-10-26 19:13:58,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44495 states. [2018-10-26 19:13:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44495 states to 44495 states and 49698 transitions. [2018-10-26 19:13:58,320 INFO L78 Accepts]: Start accepts. Automaton has 44495 states and 49698 transitions. Word has length 414 [2018-10-26 19:13:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:13:58,321 INFO L481 AbstractCegarLoop]: Abstraction has 44495 states and 49698 transitions. [2018-10-26 19:13:58,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:13:58,321 INFO L276 IsEmpty]: Start isEmpty. Operand 44495 states and 49698 transitions. [2018-10-26 19:13:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-10-26 19:13:58,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:13:58,342 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:13:58,342 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:13:58,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:13:58,342 INFO L82 PathProgramCache]: Analyzing trace with hash 963684070, now seen corresponding path program 1 times [2018-10-26 19:13:58,343 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:13:58,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:13:58,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:58,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:58,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:13:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 256 proven. 91 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-26 19:13:58,992 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:13:58,992 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 [2018-10-26 19:13:59,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:13:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:13:59,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:14:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-26 19:14:00,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:14:00,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-26 19:14:00,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 19:14:00,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 19:14:00,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-26 19:14:00,067 INFO L87 Difference]: Start difference. First operand 44495 states and 49698 transitions. Second operand 7 states. [2018-10-26 19:14:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:30,798 INFO L93 Difference]: Finished difference Result 182888 states and 202880 transitions. [2018-10-26 19:14:30,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 19:14:30,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2018-10-26 19:14:30,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:30,933 INFO L225 Difference]: With dead ends: 182888 [2018-10-26 19:14:30,933 INFO L226 Difference]: Without dead ends: 112285 [2018-10-26 19:14:30,978 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-10-26 19:14:31,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112285 states. [2018-10-26 19:14:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112285 to 102014. [2018-10-26 19:14:31,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102014 states. [2018-10-26 19:14:31,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102014 states to 102014 states and 108393 transitions. [2018-10-26 19:14:31,915 INFO L78 Accepts]: Start accepts. Automaton has 102014 states and 108393 transitions. Word has length 442 [2018-10-26 19:14:31,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:31,916 INFO L481 AbstractCegarLoop]: Abstraction has 102014 states and 108393 transitions. [2018-10-26 19:14:31,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 19:14:31,916 INFO L276 IsEmpty]: Start isEmpty. Operand 102014 states and 108393 transitions. [2018-10-26 19:14:31,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-10-26 19:14:31,952 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:31,952 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2018-10-26 19:14:31,953 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:31,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:31,953 INFO L82 PathProgramCache]: Analyzing trace with hash -196318809, now seen corresponding path program 1 times [2018-10-26 19:14:31,953 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:31,953 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:31,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:31,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:31,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:32,971 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 530 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-10-26 19:14:32,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:14:32,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:14:32,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:14:32,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:14:32,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:14:32,973 INFO L87 Difference]: Start difference. First operand 102014 states and 108393 transitions. Second operand 5 states. [2018-10-26 19:14:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:14:52,728 INFO L93 Difference]: Finished difference Result 342967 states and 364439 transitions. [2018-10-26 19:14:52,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:14:52,728 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 661 [2018-10-26 19:14:52,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:14:53,008 INFO L225 Difference]: With dead ends: 342967 [2018-10-26 19:14:53,008 INFO L226 Difference]: Without dead ends: 240162 [2018-10-26 19:14:53,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:14:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240162 states. [2018-10-26 19:14:54,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240162 to 221867. [2018-10-26 19:14:54,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221867 states. [2018-10-26 19:14:55,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221867 states to 221867 states and 234067 transitions. [2018-10-26 19:14:55,032 INFO L78 Accepts]: Start accepts. Automaton has 221867 states and 234067 transitions. Word has length 661 [2018-10-26 19:14:55,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:14:55,032 INFO L481 AbstractCegarLoop]: Abstraction has 221867 states and 234067 transitions. [2018-10-26 19:14:55,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:14:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 221867 states and 234067 transitions. [2018-10-26 19:14:55,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2018-10-26 19:14:55,067 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:14:55,068 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:14:55,068 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:14:55,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:14:55,069 INFO L82 PathProgramCache]: Analyzing trace with hash -556927638, now seen corresponding path program 1 times [2018-10-26 19:14:55,069 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:14:55,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:14:55,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:55,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:55,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:14:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 860 proven. 16 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-10-26 19:14:57,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:14:57,095 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 [2018-10-26 19:14:57,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:14:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:14:57,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:14:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 860 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-10-26 19:14:57,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:14:57,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 19:14:57,765 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:14:57,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:14:57,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:14:57,765 INFO L87 Difference]: Start difference. First operand 221867 states and 234067 transitions. Second operand 5 states. [2018-10-26 19:15:10,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:15:10,077 INFO L93 Difference]: Finished difference Result 442961 states and 467259 transitions. [2018-10-26 19:15:10,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:15:10,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 673 [2018-10-26 19:15:10,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:15:10,393 INFO L225 Difference]: With dead ends: 442961 [2018-10-26 19:15:10,393 INFO L226 Difference]: Without dead ends: 218725 [2018-10-26 19:15:10,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 673 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:15:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218725 states. [2018-10-26 19:15:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218725 to 204500. [2018-10-26 19:15:13,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204500 states. [2018-10-26 19:15:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204500 states to 204500 states and 211406 transitions. [2018-10-26 19:15:13,451 INFO L78 Accepts]: Start accepts. Automaton has 204500 states and 211406 transitions. Word has length 673 [2018-10-26 19:15:13,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:15:13,452 INFO L481 AbstractCegarLoop]: Abstraction has 204500 states and 211406 transitions. [2018-10-26 19:15:13,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:15:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 204500 states and 211406 transitions. [2018-10-26 19:15:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2018-10-26 19:15:13,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:15:13,480 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:15:13,480 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:15:13,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:15:13,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1573382673, now seen corresponding path program 1 times [2018-10-26 19:15:13,481 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:15:13,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:15:13,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:13,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:13,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:15:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:14,318 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 19:15:14,814 WARN L179 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 28 [2018-10-26 19:15:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 282 proven. 730 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-10-26 19:15:17,862 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:15:17,862 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 [2018-10-26 19:15:17,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:15:18,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:15:18,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:15:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-26 19:15:18,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:15:18,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 17 [2018-10-26 19:15:18,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-26 19:15:18,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-26 19:15:18,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-26 19:15:18,985 INFO L87 Difference]: Start difference. First operand 204500 states and 211406 transitions. Second operand 18 states. Received shutdown request... [2018-10-26 19:15:57,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-26 19:15:57,413 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:15:57,419 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:15:57,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:15:57 BoogieIcfgContainer [2018-10-26 19:15:57,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:15:57,420 INFO L168 Benchmark]: Toolchain (without parser) took 234378.87 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 573.7 MB in the end (delta: 846.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-26 19:15:57,421 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. [2018-10-26 19:15:57,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2805.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:15:57,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 804.60 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2018-10-26 19:15:57,423 INFO L168 Benchmark]: Boogie Preprocessor took 545.76 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: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2018-10-26 19:15:57,424 INFO L168 Benchmark]: RCFGBuilder took 15217.09 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 227.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 58.0 MB). Peak memory consumption was 596.8 MB. Max. memory is 7.1 GB. [2018-10-26 19:15:57,425 INFO L168 Benchmark]: TraceAbstraction took 215000.43 ms. Allocated memory was 2.6 GB in the beginning and 3.2 GB in the end (delta: 550.0 MB). Free memory was 2.1 GB in the beginning and 573.7 MB in the end (delta: 1.5 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-26 19:15:57,430 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 2805.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 804.60 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 545.76 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: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15217.09 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 227.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 58.0 MB). Peak memory consumption was 596.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215000.43 ms. Allocated memory was 2.6 GB in the beginning and 3.2 GB in the end (delta: 550.0 MB). Free memory was 2.1 GB in the beginning and 573.7 MB in the end (delta: 1.5 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (204500states) and FLOYD_HOARE automaton (currently 34 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (182810 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 214.9s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 190.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10261 SDtfs, 52471 SDslu, 4492 SDs, 0 SdLazy, 94213 SolverSat, 16921 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 156.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2068 GetRequests, 1985 SyntacticMatches, 8 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221867occurred in iteration=10, 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: 9.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 45274 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 6416 NumberOfCodeBlocks, 6416 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6400 ConstructedInterpolants, 90 QuantifiedInterpolants, 14485825 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2571 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 7112/7953 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown