java -Xss4m -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-71425fa [2018-07-22 15:14:48,881 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-22 15:14:48,883 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-22 15:14:48,896 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-22 15:14:48,896 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-22 15:14:48,897 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-22 15:14:48,898 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-22 15:14:48,903 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-22 15:14:48,905 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-22 15:14:48,906 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-22 15:14:48,906 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-22 15:14:48,907 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-22 15:14:48,909 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-22 15:14:48,910 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-22 15:14:48,911 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-22 15:14:48,915 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-22 15:14:48,916 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-22 15:14:48,917 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-22 15:14:48,919 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-22 15:14:48,921 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-22 15:14:48,922 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-22 15:14:48,923 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-22 15:14:48,925 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-22 15:14:48,934 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-22 15:14:48,953 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-22 15:14:48,953 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-22 15:14:48,956 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-22 15:14:48,957 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-22 15:14:48,957 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-22 15:14:48,957 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-22 15:14:48,958 INFO L133 SettingsManager]: * Use SBE=true [2018-07-22 15:14:48,958 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-22 15:14:48,958 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-22 15:14:48,958 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-22 15:14:48,958 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-22 15:14:48,959 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-22 15:14:48,959 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-22 15:14:48,959 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-22 15:14:48,959 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-22 15:14:48,959 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-22 15:14:48,960 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-22 15:14:48,960 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-22 15:14:48,960 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-22 15:14:48,960 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 15:14:48,960 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-22 15:14:48,960 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-07-22 15:14:48,965 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-22 15:14:48,965 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-22 15:14:48,965 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-22 15:14:48,965 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-22 15:14:48,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-22 15:14:48,966 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-22 15:14:48,966 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-22 15:14:49,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-22 15:14:49,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-22 15:14:49,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-22 15:14:49,035 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-22 15:14:49,035 INFO L276 PluginConnector]: CDTParser initialized [2018-07-22 15:14:49,036 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-07-22 15:14:49,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f9c04ea/754c1da9c2704620ba8ecb87a4f278f0/FLAG9de966de0 [2018-07-22 15:14:50,044 INFO L276 CDTParser]: Found 1 translation units. [2018-07-22 15:14:50,047 INFO L158 CDTParser]: Scanning /storage/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label02_true-unreach-call.c [2018-07-22 15:14:50,101 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f9c04ea/754c1da9c2704620ba8ecb87a4f278f0/FLAG9de966de0 [2018-07-22 15:14:50,120 INFO L332 CDTParser]: Successfully deleted /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f9c04ea/754c1da9c2704620ba8ecb87a4f278f0 [2018-07-22 15:14:50,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-22 15:14:50,140 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-22 15:14:50,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-22 15:14:50,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-22 15:14:50,150 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-22 15:14:50,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:14:50" (1/1) ... [2018-07-22 15:14:50,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aadd750 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:50, skipping insertion in model container [2018-07-22 15:14:50,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 03:14:50" (1/1) ... [2018-07-22 15:14:50,647 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-22 15:14:52,847 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 15:14:52,866 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-22 15:14:54,443 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-22 15:14:54,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54 WrapperNode [2018-07-22 15:14:54,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-22 15:14:54,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-22 15:14:54,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-22 15:14:54,945 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-22 15:14:54,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (1/1) ... [2018-07-22 15:14:56,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (1/1) ... [2018-07-22 15:14:57,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-22 15:14:57,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-22 15:14:57,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-22 15:14:57,260 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-22 15:14:57,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (1/1) ... [2018-07-22 15:14:57,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (1/1) ... [2018-07-22 15:14:57,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (1/1) ... [2018-07-22 15:14:57,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (1/1) ... [2018-07-22 15:14:57,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (1/1) ... [2018-07-22 15:14:58,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (1/1) ... [2018-07-22 15:14:58,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (1/1) ... [2018-07-22 15:14:58,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-22 15:14:58,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-22 15:14:58,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-22 15:14:58,318 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-22 15:14:58,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-22 15:14:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-22 15:14:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-22 15:14:58,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-22 15:15:18,045 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-22 15:15:18,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:15:18 BoogieIcfgContainer [2018-07-22 15:15:18,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-22 15:15:18,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-22 15:15:18,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-22 15:15:18,057 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-22 15:15:18,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 03:14:50" (1/3) ... [2018-07-22 15:15:18,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f800fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:15:18, skipping insertion in model container [2018-07-22 15:15:18,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 03:14:54" (2/3) ... [2018-07-22 15:15:18,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f800fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 03:15:18, skipping insertion in model container [2018-07-22 15:15:18,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 03:15:18" (3/3) ... [2018-07-22 15:15:18,077 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label02_true-unreach-call.c [2018-07-22 15:15:18,090 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-22 15:15:18,104 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-22 15:15:18,185 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-22 15:15:18,186 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-22 15:15:18,186 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-22 15:15:18,186 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-22 15:15:18,186 INFO L376 AbstractCegarLoop]: Backedges is TWOTRACK [2018-07-22 15:15:18,186 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-22 15:15:18,186 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-22 15:15:18,187 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-22 15:15:18,187 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-22 15:15:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-07-22 15:15:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-07-22 15:15:18,253 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:15:18,255 INFO L358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:15:18,256 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:15:18,261 INFO L82 PathProgramCache]: Analyzing trace with hash -757100326, now seen corresponding path program 1 times [2018-07-22 15:15:18,263 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:15:18,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:15:18,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:15:18,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:15:18,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:15:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:15:18,806 WARN L169 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-07-22 15:15:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:15:18,908 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:15:18,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:15:18,912 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:15:18,928 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:15:18,928 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:15:18,931 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-07-22 15:15:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:15:39,051 INFO L93 Difference]: Finished difference Result 6419 states and 12268 transitions. [2018-07-22 15:15:39,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:15:39,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2018-07-22 15:15:39,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:15:39,109 INFO L225 Difference]: With dead ends: 6419 [2018-07-22 15:15:39,109 INFO L226 Difference]: Without dead ends: 4663 [2018-07-22 15:15:39,121 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:15:39,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2018-07-22 15:15:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4573. [2018-07-22 15:15:39,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4573 states. [2018-07-22 15:15:39,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 7863 transitions. [2018-07-22 15:15:39,348 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 7863 transitions. Word has length 67 [2018-07-22 15:15:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:15:39,351 INFO L471 AbstractCegarLoop]: Abstraction has 4573 states and 7863 transitions. [2018-07-22 15:15:39,351 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:15:39,351 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 7863 transitions. [2018-07-22 15:15:39,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-07-22 15:15:39,363 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:15:39,363 INFO L358 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, 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] [2018-07-22 15:15:39,363 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:15:39,364 INFO L82 PathProgramCache]: Analyzing trace with hash 297182960, now seen corresponding path program 1 times [2018-07-22 15:15:39,364 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:15:39,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:15:39,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:15:39,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:15:39,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:15:39,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:15:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:15:39,796 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:15:39,796 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:15:39,799 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:15:39,799 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:15:39,799 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:15:39,800 INFO L87 Difference]: Start difference. First operand 4573 states and 7863 transitions. Second operand 4 states. [2018-07-22 15:15:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:15:59,101 INFO L93 Difference]: Finished difference Result 17564 states and 30487 transitions. [2018-07-22 15:15:59,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:15:59,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-07-22 15:15:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:15:59,201 INFO L225 Difference]: With dead ends: 17564 [2018-07-22 15:15:59,202 INFO L226 Difference]: Without dead ends: 12993 [2018-07-22 15:15:59,211 INFO L578 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 [2018-07-22 15:15:59,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12993 states. [2018-07-22 15:15:59,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12993 to 8672. [2018-07-22 15:15:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8672 states. [2018-07-22 15:15:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8672 states to 8672 states and 14512 transitions. [2018-07-22 15:15:59,482 INFO L78 Accepts]: Start accepts. Automaton has 8672 states and 14512 transitions. Word has length 151 [2018-07-22 15:15:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:15:59,483 INFO L471 AbstractCegarLoop]: Abstraction has 8672 states and 14512 transitions. [2018-07-22 15:15:59,483 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:15:59,483 INFO L276 IsEmpty]: Start isEmpty. Operand 8672 states and 14512 transitions. [2018-07-22 15:15:59,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-07-22 15:15:59,487 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:15:59,487 INFO L358 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, 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] [2018-07-22 15:15:59,487 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:15:59,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1159514843, now seen corresponding path program 1 times [2018-07-22 15:15:59,488 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:15:59,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:15:59,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:15:59,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:15:59,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:15:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:15:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:15:59,741 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:15:59,742 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:15:59,742 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:15:59,743 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:15:59,743 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:15:59,743 INFO L87 Difference]: Start difference. First operand 8672 states and 14512 transitions. Second operand 4 states. [2018-07-22 15:16:18,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:16:18,862 INFO L93 Difference]: Finished difference Result 33853 states and 56995 transitions. [2018-07-22 15:16:18,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:16:18,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 191 [2018-07-22 15:16:18,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:16:18,940 INFO L225 Difference]: With dead ends: 33853 [2018-07-22 15:16:18,941 INFO L226 Difference]: Without dead ends: 25183 [2018-07-22 15:16:18,951 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:16:18,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25183 states. [2018-07-22 15:16:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25183 to 25143. [2018-07-22 15:16:19,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25143 states. [2018-07-22 15:16:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25143 states to 25143 states and 37164 transitions. [2018-07-22 15:16:19,521 INFO L78 Accepts]: Start accepts. Automaton has 25143 states and 37164 transitions. Word has length 191 [2018-07-22 15:16:19,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:16:19,524 INFO L471 AbstractCegarLoop]: Abstraction has 25143 states and 37164 transitions. [2018-07-22 15:16:19,524 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:16:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand 25143 states and 37164 transitions. [2018-07-22 15:16:19,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-07-22 15:16:19,529 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:16:19,530 INFO L358 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:16:19,530 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:16:19,530 INFO L82 PathProgramCache]: Analyzing trace with hash -95923823, now seen corresponding path program 1 times [2018-07-22 15:16:19,530 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:16:19,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:16:19,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:16:19,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:16:19,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:16:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:16:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-07-22 15:16:19,909 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:16:19,909 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:16:19,910 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:16:19,911 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:16:19,911 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:16:19,911 INFO L87 Difference]: Start difference. First operand 25143 states and 37164 transitions. Second operand 4 states. [2018-07-22 15:16:34,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:16:34,010 INFO L93 Difference]: Finished difference Result 99773 states and 147665 transitions. [2018-07-22 15:16:34,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:16:34,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 257 [2018-07-22 15:16:34,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:16:34,112 INFO L225 Difference]: With dead ends: 99773 [2018-07-22 15:16:34,112 INFO L226 Difference]: Without dead ends: 74632 [2018-07-22 15:16:34,142 INFO L578 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 [2018-07-22 15:16:34,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74632 states. [2018-07-22 15:16:35,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74632 to 74610. [2018-07-22 15:16:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74610 states. [2018-07-22 15:16:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74610 states to 74610 states and 95492 transitions. [2018-07-22 15:16:35,377 INFO L78 Accepts]: Start accepts. Automaton has 74610 states and 95492 transitions. Word has length 257 [2018-07-22 15:16:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:16:35,377 INFO L471 AbstractCegarLoop]: Abstraction has 74610 states and 95492 transitions. [2018-07-22 15:16:35,377 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:16:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 74610 states and 95492 transitions. [2018-07-22 15:16:35,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2018-07-22 15:16:35,392 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:16:35,393 INFO L358 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:16:35,393 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:16:35,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1017838401, now seen corresponding path program 1 times [2018-07-22 15:16:35,394 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:16:35,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:16:35,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:16:35,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:16:35,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:16:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:16:36,362 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-22 15:16:36,646 WARN L169 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2018-07-22 15:16:37,229 WARN L169 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 24 [2018-07-22 15:16:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-07-22 15:16:37,535 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-22 15:16:37,535 INFO L219 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-22 15:16:37,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:16:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:16:37,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-22 15:16:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-22 15:16:39,519 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-22 15:16:39,520 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-07-22 15:16:39,521 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-22 15:16:39,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-22 15:16:39,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-07-22 15:16:39,522 INFO L87 Difference]: Start difference. First operand 74610 states and 95492 transitions. Second operand 8 states. [2018-07-22 15:17:14,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:17:14,936 INFO L93 Difference]: Finished difference Result 249449 states and 317045 transitions. [2018-07-22 15:17:14,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-22 15:17:14,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 568 [2018-07-22 15:17:14,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:17:15,202 INFO L225 Difference]: With dead ends: 249449 [2018-07-22 15:17:15,203 INFO L226 Difference]: Without dead ends: 174841 [2018-07-22 15:17:15,272 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 578 GetRequests, 566 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-07-22 15:17:15,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174841 states. [2018-07-22 15:17:17,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174841 to 172023. [2018-07-22 15:17:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172023 states. [2018-07-22 15:17:18,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172023 states to 172023 states and 214627 transitions. [2018-07-22 15:17:18,117 INFO L78 Accepts]: Start accepts. Automaton has 172023 states and 214627 transitions. Word has length 568 [2018-07-22 15:17:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:17:18,118 INFO L471 AbstractCegarLoop]: Abstraction has 172023 states and 214627 transitions. [2018-07-22 15:17:18,119 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-22 15:17:18,121 INFO L276 IsEmpty]: Start isEmpty. Operand 172023 states and 214627 transitions. [2018-07-22 15:17:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2018-07-22 15:17:18,298 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:17:18,299 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 15:17:18,299 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:17:18,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1992461950, now seen corresponding path program 1 times [2018-07-22 15:17:18,299 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:17:18,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:17:18,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:17:18,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:17:18,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:17:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:17:19,103 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-22 15:17:19,587 WARN L169 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 17 [2018-07-22 15:17:20,189 WARN L169 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-07-22 15:17:21,004 WARN L169 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2018-07-22 15:17:22,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 752 proven. 0 refuted. 0 times theorem prover too weak. 1185 trivial. 0 not checked. [2018-07-22 15:17:22,793 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:17:22,793 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-22 15:17:22,795 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-22 15:17:22,795 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-22 15:17:22,795 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-22 15:17:22,795 INFO L87 Difference]: Start difference. First operand 172023 states and 214627 transitions. Second operand 7 states. [2018-07-22 15:17:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:17:41,977 INFO L93 Difference]: Finished difference Result 400063 states and 493617 transitions. [2018-07-22 15:17:41,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-22 15:17:41,977 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1277 [2018-07-22 15:17:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:17:42,265 INFO L225 Difference]: With dead ends: 400063 [2018-07-22 15:17:42,265 INFO L226 Difference]: Without dead ends: 228042 [2018-07-22 15:17:42,317 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-07-22 15:17:42,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228042 states. [2018-07-22 15:17:50,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228042 to 214374. [2018-07-22 15:17:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214374 states. [2018-07-22 15:17:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214374 states to 214374 states and 258610 transitions. [2018-07-22 15:17:50,924 INFO L78 Accepts]: Start accepts. Automaton has 214374 states and 258610 transitions. Word has length 1277 [2018-07-22 15:17:50,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:17:50,924 INFO L471 AbstractCegarLoop]: Abstraction has 214374 states and 258610 transitions. [2018-07-22 15:17:50,924 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-22 15:17:50,925 INFO L276 IsEmpty]: Start isEmpty. Operand 214374 states and 258610 transitions. [2018-07-22 15:17:51,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1306 [2018-07-22 15:17:51,093 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:17:51,094 INFO L358 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-22 15:17:51,094 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:17:51,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1612636764, now seen corresponding path program 1 times [2018-07-22 15:17:51,095 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:17:51,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:17:51,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:17:51,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:17:51,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:17:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:17:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1993 backedges. 1158 proven. 0 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2018-07-22 15:17:57,568 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:17:57,568 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-22 15:17:57,570 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-22 15:17:57,571 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-22 15:17:57,571 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:17:57,571 INFO L87 Difference]: Start difference. First operand 214374 states and 258610 transitions. Second operand 4 states. [2018-07-22 15:18:10,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-22 15:18:10,952 INFO L93 Difference]: Finished difference Result 473830 states and 570099 transitions. [2018-07-22 15:18:10,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-22 15:18:10,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1305 [2018-07-22 15:18:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-22 15:18:11,205 INFO L225 Difference]: With dead ends: 473830 [2018-07-22 15:18:11,205 INFO L226 Difference]: Without dead ends: 247111 [2018-07-22 15:18:11,272 INFO L578 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-22 15:18:11,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247111 states. [2018-07-22 15:18:14,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247111 to 245351. [2018-07-22 15:18:14,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245351 states. [2018-07-22 15:18:14,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245351 states to 245351 states and 274661 transitions. [2018-07-22 15:18:14,447 INFO L78 Accepts]: Start accepts. Automaton has 245351 states and 274661 transitions. Word has length 1305 [2018-07-22 15:18:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-22 15:18:14,447 INFO L471 AbstractCegarLoop]: Abstraction has 245351 states and 274661 transitions. [2018-07-22 15:18:14,447 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-22 15:18:14,447 INFO L276 IsEmpty]: Start isEmpty. Operand 245351 states and 274661 transitions. [2018-07-22 15:18:14,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1630 [2018-07-22 15:18:14,534 INFO L350 BasicCegarLoop]: Found error trace [2018-07-22 15:18:14,535 INFO L358 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-22 15:18:14,535 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-22 15:18:14,536 INFO L82 PathProgramCache]: Analyzing trace with hash 331376764, now seen corresponding path program 1 times [2018-07-22 15:18:14,536 INFO L219 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-22 15:18:14,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-22 15:18:14,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:18:14,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-22 15:18:14,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-22 15:18:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-22 15:18:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3020 backedges. 2158 proven. 0 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2018-07-22 15:18:21,245 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-22 15:18:21,245 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-22 15:18:21,247 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-22 15:18:21,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-22 15:18:21,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-22 15:18:21,248 INFO L87 Difference]: Start difference. First operand 245351 states and 274661 transitions. Second operand 3 states. Received shutdown request... [2018-07-22 15:18:22,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-22 15:18:22,518 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-22 15:18:22,523 WARN L202 ceAbstractionStarter]: Timeout [2018-07-22 15:18:22,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 03:18:22 BoogieIcfgContainer [2018-07-22 15:18:22,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-22 15:18:22,525 INFO L168 Benchmark]: Toolchain (without parser) took 212391.64 ms. Allocated memory was 309.3 MB in the beginning and 3.0 GB in the end (delta: 2.6 GB). Free memory was 226.6 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. [2018-07-22 15:18:22,526 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 309.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-07-22 15:18:22,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4800.98 ms. Allocated memory was 309.3 MB in the beginning and 393.2 MB in the end (delta: 83.9 MB). Free memory was 226.6 MB in the beginning and 116.4 MB in the end (delta: 110.2 MB). Peak memory consumption was 214.3 MB. Max. memory is 5.3 GB. [2018-07-22 15:18:22,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 2314.84 ms. Allocated memory was 393.2 MB in the beginning and 684.7 MB in the end (delta: 291.5 MB). Free memory was 116.4 MB in the beginning and 387.7 MB in the end (delta: -271.4 MB). Peak memory consumption was 95.1 MB. Max. memory is 5.3 GB. [2018-07-22 15:18:22,527 INFO L168 Benchmark]: Boogie Preprocessor took 1057.03 ms. Allocated memory was 684.7 MB in the beginning and 854.1 MB in the end (delta: 169.3 MB). Free memory was 387.7 MB in the beginning and 556.3 MB in the end (delta: -168.6 MB). Peak memory consumption was 124.1 MB. Max. memory is 5.3 GB. [2018-07-22 15:18:22,528 INFO L168 Benchmark]: RCFGBuilder took 19729.12 ms. Allocated memory was 854.1 MB in the beginning and 1.2 GB in the end (delta: 311.4 MB). Free memory was 556.3 MB in the beginning and 754.9 MB in the end (delta: -198.6 MB). Peak memory consumption was 418.2 MB. Max. memory is 5.3 GB. [2018-07-22 15:18:22,529 INFO L168 Benchmark]: TraceAbstraction took 184476.85 ms. Allocated memory was 1.2 GB in the beginning and 3.0 GB in the end (delta: 1.8 GB). Free memory was 754.9 MB in the beginning and 1.4 GB in the end (delta: -598.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. [2018-07-22 15:18:22,532 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 309.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 4800.98 ms. Allocated memory was 309.3 MB in the beginning and 393.2 MB in the end (delta: 83.9 MB). Free memory was 226.6 MB in the beginning and 116.4 MB in the end (delta: 110.2 MB). Peak memory consumption was 214.3 MB. Max. memory is 5.3 GB. * Boogie Procedure Inliner took 2314.84 ms. Allocated memory was 393.2 MB in the beginning and 684.7 MB in the end (delta: 291.5 MB). Free memory was 116.4 MB in the beginning and 387.7 MB in the end (delta: -271.4 MB). Peak memory consumption was 95.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 1057.03 ms. Allocated memory was 684.7 MB in the beginning and 854.1 MB in the end (delta: 169.3 MB). Free memory was 387.7 MB in the beginning and 556.3 MB in the end (delta: -168.6 MB). Peak memory consumption was 124.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 19729.12 ms. Allocated memory was 854.1 MB in the beginning and 1.2 GB in the end (delta: 311.4 MB). Free memory was 556.3 MB in the beginning and 754.9 MB in the end (delta: -198.6 MB). Peak memory consumption was 418.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 184476.85 ms. Allocated memory was 1.2 GB in the beginning and 3.0 GB in the end (delta: 1.8 GB). Free memory was 754.9 MB in the beginning and 1.4 GB in the end (delta: -598.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 214]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 214). Cancelled while BasicCegarLoop was constructing difference of abstraction (245351states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (12736 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 184.3s OverallTime, 8 OverallIterations, 7 TraceHistogramMax, 143.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8688 SDtfs, 42560 SDslu, 3150 SDs, 0 SdLazy, 86349 SolverSat, 19719 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 119.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 609 GetRequests, 575 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=245351occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 16.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 22719 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 6013 NumberOfCodeBlocks, 6013 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 6004 ConstructedInterpolants, 0 QuantifiedInterpolants, 17349559 SizeOfPredicates, 5 NumberOfNonLiveVariables, 634 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 7383/7426 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem19_label02_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-22_15-18-22-547.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/Problem19_label02_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-22_15-18-22-547.csv Completed graceful shutdown