java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:12:11,912 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:12:11,914 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:12:11,936 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:12:11,936 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:12:11,937 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:12:11,941 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:12:11,943 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:12:11,946 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:12:11,948 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:12:11,948 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:12:11,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:12:11,950 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:12:11,953 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:12:11,954 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:12:11,962 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:12:11,963 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:12:11,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:12:11,970 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:12:11,972 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:12:11,973 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:12:11,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:12:11,976 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:12:11,984 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:12:12,005 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:12:12,005 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:12:12,006 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:12:12,006 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:12:12,007 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:12:12,007 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:12:12,007 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:12:12,008 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:12:12,008 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:12:12,008 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:12:12,008 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:12:12,008 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:12:12,009 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:12:12,009 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:12:12,009 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:12:12,009 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:12:12,009 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:12:12,010 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:12:12,010 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:12:12,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:12:12,010 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:12:12,010 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:12:12,010 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:12:12,011 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:12:12,011 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:12:12,011 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:12:12,011 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:12:12,011 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:12:12,077 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:12:12,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:12:12,096 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:12:12,098 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:12:12,098 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:12:12,099 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-11-06 21:12:12,167 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b677dfdba/28a029fc1ea84abab6db9d0cac68584d/FLAGd49fb6662 [2018-11-06 21:12:12,991 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:12:12,992 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label41_true-unreach-call.c [2018-11-06 21:12:13,024 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b677dfdba/28a029fc1ea84abab6db9d0cac68584d/FLAGd49fb6662 [2018-11-06 21:12:13,049 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b677dfdba/28a029fc1ea84abab6db9d0cac68584d [2018-11-06 21:12:13,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:12:13,067 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:12:13,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:12:13,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:12:13,075 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:12:13,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:12:13" (1/1) ... [2018-11-06 21:12:13,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f322134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:13, skipping insertion in model container [2018-11-06 21:12:13,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:12:13" (1/1) ... [2018-11-06 21:12:13,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:12:13,263 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:12:14,518 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:12:14,523 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:12:15,126 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:12:15,161 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:12:15,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15 WrapperNode [2018-11-06 21:12:15,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:12:15,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:12:15,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:12:15,164 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:12:15,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (1/1) ... [2018-11-06 21:12:15,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (1/1) ... [2018-11-06 21:12:15,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:12:15,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:12:15,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:12:15,766 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:12:15,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (1/1) ... [2018-11-06 21:12:15,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (1/1) ... [2018-11-06 21:12:15,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (1/1) ... [2018-11-06 21:12:15,811 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (1/1) ... [2018-11-06 21:12:15,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (1/1) ... [2018-11-06 21:12:15,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (1/1) ... [2018-11-06 21:12:16,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (1/1) ... [2018-11-06 21:12:16,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:12:16,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:12:16,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:12:16,133 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:12:16,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:12:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:12:16,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:12:16,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:12:24,788 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:12:24,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:12:24 BoogieIcfgContainer [2018-11-06 21:12:24,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:12:24,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:12:24,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:12:24,793 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:12:24,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:12:13" (1/3) ... [2018-11-06 21:12:24,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338f7016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:12:24, skipping insertion in model container [2018-11-06 21:12:24,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:12:15" (2/3) ... [2018-11-06 21:12:24,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338f7016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:12:24, skipping insertion in model container [2018-11-06 21:12:24,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:12:24" (3/3) ... [2018-11-06 21:12:24,800 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label41_true-unreach-call.c [2018-11-06 21:12:24,810 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:12:24,823 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:12:24,841 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:12:24,895 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:12:24,896 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:12:24,896 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:12:24,896 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:12:24,897 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:12:24,897 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:12:24,897 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:12:24,897 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:12:24,897 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:12:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-11-06 21:12:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-06 21:12:24,958 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:12:24,959 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:12:24,962 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:12:24,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:12:24,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-11-06 21:12:24,971 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:12:24,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:12:25,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:25,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:25,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:25,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:12:25,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:12:25,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:12:25,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:12:25,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:12:25,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:12:25,574 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-11-06 21:12:36,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:12:36,243 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-11-06 21:12:36,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:12:36,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-11-06 21:12:36,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:12:36,296 INFO L225 Difference]: With dead ends: 3162 [2018-11-06 21:12:36,297 INFO L226 Difference]: Without dead ends: 2336 [2018-11-06 21:12:36,306 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:12:36,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-11-06 21:12:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2018-11-06 21:12:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2018-11-06 21:12:36,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3769 transitions. [2018-11-06 21:12:36,478 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3769 transitions. Word has length 53 [2018-11-06 21:12:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:12:36,479 INFO L480 AbstractCegarLoop]: Abstraction has 2336 states and 3769 transitions. [2018-11-06 21:12:36,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:12:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3769 transitions. [2018-11-06 21:12:36,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-06 21:12:36,490 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:12:36,490 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:12:36,491 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:12:36,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:12:36,491 INFO L82 PathProgramCache]: Analyzing trace with hash -455382204, now seen corresponding path program 1 times [2018-11-06 21:12:36,491 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:12:36,492 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:12:36,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:36,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:36,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:36,953 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-11-06 21:12:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:12:37,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:12:37,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 21:12:37,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:12:37,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:12:37,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:12:37,159 INFO L87 Difference]: Start difference. First operand 2336 states and 3769 transitions. Second operand 6 states. [2018-11-06 21:12:52,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:12:52,334 INFO L93 Difference]: Finished difference Result 9183 states and 14416 transitions. [2018-11-06 21:12:52,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:12:52,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-11-06 21:12:52,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:12:52,378 INFO L225 Difference]: With dead ends: 9183 [2018-11-06 21:12:52,378 INFO L226 Difference]: Without dead ends: 6849 [2018-11-06 21:12:52,384 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:12:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2018-11-06 21:12:52,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6849. [2018-11-06 21:12:52,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6849 states. [2018-11-06 21:12:52,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6849 states to 6849 states and 9754 transitions. [2018-11-06 21:12:52,530 INFO L78 Accepts]: Start accepts. Automaton has 6849 states and 9754 transitions. Word has length 130 [2018-11-06 21:12:52,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:12:52,530 INFO L480 AbstractCegarLoop]: Abstraction has 6849 states and 9754 transitions. [2018-11-06 21:12:52,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:12:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states and 9754 transitions. [2018-11-06 21:12:52,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-06 21:12:52,542 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:12:52,546 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:12:52,547 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:12:52,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:12:52,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1535905281, now seen corresponding path program 1 times [2018-11-06 21:12:52,547 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:12:52,548 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:12:52,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:52,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:52,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:12:52,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:53,293 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-11-06 21:12:53,499 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 151 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-06 21:12:53,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:12:53,500 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:12:53,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:12:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:12:53,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:12:53,778 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:12:53,810 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:12:53,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 21:12:53,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:12:53,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:12:53,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:12:53,812 INFO L87 Difference]: Start difference. First operand 6849 states and 9754 transitions. Second operand 7 states. [2018-11-06 21:13:10,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:13:10,878 INFO L93 Difference]: Finished difference Result 28768 states and 40519 transitions. [2018-11-06 21:13:10,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 21:13:10,878 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2018-11-06 21:13:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:13:10,965 INFO L225 Difference]: With dead ends: 28768 [2018-11-06 21:13:10,965 INFO L226 Difference]: Without dead ends: 18909 [2018-11-06 21:13:10,981 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:13:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18909 states. [2018-11-06 21:13:11,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18909 to 14367. [2018-11-06 21:13:11,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14367 states. [2018-11-06 21:13:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14367 states to 14367 states and 17896 transitions. [2018-11-06 21:13:11,505 INFO L78 Accepts]: Start accepts. Automaton has 14367 states and 17896 transitions. Word has length 232 [2018-11-06 21:13:11,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:13:11,505 INFO L480 AbstractCegarLoop]: Abstraction has 14367 states and 17896 transitions. [2018-11-06 21:13:11,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:13:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 14367 states and 17896 transitions. [2018-11-06 21:13:11,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-11-06 21:13:11,511 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:13:11,511 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:13:11,511 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:13:11,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:13:11,515 INFO L82 PathProgramCache]: Analyzing trace with hash 603282787, now seen corresponding path program 1 times [2018-11-06 21:13:11,515 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:13:11,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:13:11,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:11,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:11,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:13:11,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:13:11,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:13:11,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:13:11,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:13:11,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:13:11,913 INFO L87 Difference]: Start difference. First operand 14367 states and 17896 transitions. Second operand 4 states. [2018-11-06 21:13:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:13:18,441 INFO L93 Difference]: Finished difference Result 49788 states and 63216 transitions. [2018-11-06 21:13:18,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:13:18,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 287 [2018-11-06 21:13:18,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:13:18,515 INFO L225 Difference]: With dead ends: 49788 [2018-11-06 21:13:18,516 INFO L226 Difference]: Without dead ends: 35423 [2018-11-06 21:13:18,540 INFO L604 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 [2018-11-06 21:13:18,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35423 states. [2018-11-06 21:13:19,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35423 to 35423. [2018-11-06 21:13:19,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35423 states. [2018-11-06 21:13:19,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35423 states to 35423 states and 43956 transitions. [2018-11-06 21:13:19,085 INFO L78 Accepts]: Start accepts. Automaton has 35423 states and 43956 transitions. Word has length 287 [2018-11-06 21:13:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:13:19,086 INFO L480 AbstractCegarLoop]: Abstraction has 35423 states and 43956 transitions. [2018-11-06 21:13:19,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:13:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 35423 states and 43956 transitions. [2018-11-06 21:13:19,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-06 21:13:19,095 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:13:19,096 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:13:19,096 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:13:19,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:13:19,097 INFO L82 PathProgramCache]: Analyzing trace with hash -673880654, now seen corresponding path program 1 times [2018-11-06 21:13:19,097 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:13:19,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:13:19,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:19,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:19,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:19,816 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 101 proven. 7 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-06 21:13:19,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:13:19,817 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:13:19,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:19,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:13:20,084 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-06 21:13:20,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:13:20,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 21:13:20,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:13:20,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:13:20,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:13:20,121 INFO L87 Difference]: Start difference. First operand 35423 states and 43956 transitions. Second operand 5 states. [2018-11-06 21:13:30,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:13:30,113 INFO L93 Difference]: Finished difference Result 140028 states and 174957 transitions. [2018-11-06 21:13:30,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:13:30,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2018-11-06 21:13:30,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:13:30,233 INFO L225 Difference]: With dead ends: 140028 [2018-11-06 21:13:30,233 INFO L226 Difference]: Without dead ends: 87268 [2018-11-06 21:13:30,285 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:13:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87268 states. [2018-11-06 21:13:31,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87268 to 78237. [2018-11-06 21:13:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78237 states. [2018-11-06 21:13:31,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78237 states to 78237 states and 88129 transitions. [2018-11-06 21:13:31,288 INFO L78 Accepts]: Start accepts. Automaton has 78237 states and 88129 transitions. Word has length 293 [2018-11-06 21:13:31,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:13:31,289 INFO L480 AbstractCegarLoop]: Abstraction has 78237 states and 88129 transitions. [2018-11-06 21:13:31,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:13:31,289 INFO L276 IsEmpty]: Start isEmpty. Operand 78237 states and 88129 transitions. [2018-11-06 21:13:31,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-11-06 21:13:31,298 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:13:31,298 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:13:31,299 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:13:31,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:13:31,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1940907995, now seen corresponding path program 1 times [2018-11-06 21:13:31,299 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:13:31,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:13:31,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:31,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:31,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-06 21:13:31,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:13:31,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:13:31,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:13:31,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:13:31,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:13:31,764 INFO L87 Difference]: Start difference. First operand 78237 states and 88129 transitions. Second operand 4 states. [2018-11-06 21:13:38,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:13:38,478 INFO L93 Difference]: Finished difference Result 160232 states and 180145 transitions. [2018-11-06 21:13:38,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:13:38,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2018-11-06 21:13:38,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:13:38,623 INFO L225 Difference]: With dead ends: 160232 [2018-11-06 21:13:38,624 INFO L226 Difference]: Without dead ends: 81997 [2018-11-06 21:13:38,657 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:13:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81997 states. [2018-11-06 21:13:39,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81997 to 79741. [2018-11-06 21:13:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79741 states. [2018-11-06 21:13:39,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79741 states to 79741 states and 88520 transitions. [2018-11-06 21:13:39,570 INFO L78 Accepts]: Start accepts. Automaton has 79741 states and 88520 transitions. Word has length 332 [2018-11-06 21:13:39,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:13:39,571 INFO L480 AbstractCegarLoop]: Abstraction has 79741 states and 88520 transitions. [2018-11-06 21:13:39,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:13:39,572 INFO L276 IsEmpty]: Start isEmpty. Operand 79741 states and 88520 transitions. [2018-11-06 21:13:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-11-06 21:13:39,595 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:13:39,596 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:13:39,596 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:13:39,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:13:39,597 INFO L82 PathProgramCache]: Analyzing trace with hash -124946050, now seen corresponding path program 1 times [2018-11-06 21:13:39,597 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:13:39,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:13:39,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:39,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:39,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:40,109 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 21:13:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 405 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-11-06 21:13:40,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:13:40,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:13:40,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:13:40,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:13:40,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:13:40,193 INFO L87 Difference]: Start difference. First operand 79741 states and 88520 transitions. Second operand 4 states. [2018-11-06 21:13:44,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:13:44,352 INFO L93 Difference]: Finished difference Result 161736 states and 179377 transitions. [2018-11-06 21:13:44,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:13:44,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 474 [2018-11-06 21:13:44,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:13:44,470 INFO L225 Difference]: With dead ends: 161736 [2018-11-06 21:13:44,470 INFO L226 Difference]: Without dead ends: 81997 [2018-11-06 21:13:44,526 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:13:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81997 states. [2018-11-06 21:13:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81997 to 80493. [2018-11-06 21:13:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80493 states. [2018-11-06 21:13:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80493 states to 80493 states and 88286 transitions. [2018-11-06 21:13:46,040 INFO L78 Accepts]: Start accepts. Automaton has 80493 states and 88286 transitions. Word has length 474 [2018-11-06 21:13:46,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:13:46,041 INFO L480 AbstractCegarLoop]: Abstraction has 80493 states and 88286 transitions. [2018-11-06 21:13:46,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:13:46,041 INFO L276 IsEmpty]: Start isEmpty. Operand 80493 states and 88286 transitions. [2018-11-06 21:13:46,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2018-11-06 21:13:46,068 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:13:46,068 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:13:46,069 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:13:46,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:13:46,069 INFO L82 PathProgramCache]: Analyzing trace with hash 370586703, now seen corresponding path program 1 times [2018-11-06 21:13:46,069 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:13:46,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:13:46,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:46,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:46,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-06 21:13:46,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:13:46,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:13:46,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:13:46,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:13:46,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:13:46,516 INFO L87 Difference]: Start difference. First operand 80493 states and 88286 transitions. Second operand 3 states. [2018-11-06 21:13:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:13:50,927 INFO L93 Difference]: Finished difference Result 178280 states and 195690 transitions. [2018-11-06 21:13:50,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:13:50,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 480 [2018-11-06 21:13:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:13:51,032 INFO L225 Difference]: With dead ends: 178280 [2018-11-06 21:13:51,033 INFO L226 Difference]: Without dead ends: 97789 [2018-11-06 21:13:51,079 INFO L604 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 [2018-11-06 21:13:51,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97789 states. [2018-11-06 21:13:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97789 to 95533. [2018-11-06 21:13:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95533 states. [2018-11-06 21:13:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95533 states to 95533 states and 104018 transitions. [2018-11-06 21:13:51,983 INFO L78 Accepts]: Start accepts. Automaton has 95533 states and 104018 transitions. Word has length 480 [2018-11-06 21:13:51,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:13:51,984 INFO L480 AbstractCegarLoop]: Abstraction has 95533 states and 104018 transitions. [2018-11-06 21:13:51,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:13:51,984 INFO L276 IsEmpty]: Start isEmpty. Operand 95533 states and 104018 transitions. [2018-11-06 21:13:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-11-06 21:13:52,009 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:13:52,009 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:13:52,009 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:13:52,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:13:52,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1189729698, now seen corresponding path program 1 times [2018-11-06 21:13:52,010 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:13:52,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:13:52,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:52,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:52,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:13:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:53,381 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 21:13:53,742 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-11-06 21:13:54,281 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-11-06 21:13:54,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:13:54,282 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:13:54,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:13:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:13:54,426 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:13:54,694 INFO L134 CoverageAnalysis]: Checked inductivity of 524 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2018-11-06 21:13:54,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 21:13:54,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2018-11-06 21:13:54,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:13:54,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:13:54,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:13:54,718 INFO L87 Difference]: Start difference. First operand 95533 states and 104018 transitions. Second operand 8 states. [2018-11-06 21:14:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:14:06,660 INFO L93 Difference]: Finished difference Result 226408 states and 245790 transitions. [2018-11-06 21:14:06,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 21:14:06,660 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 582 [2018-11-06 21:14:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:14:06,833 INFO L225 Difference]: With dead ends: 226408 [2018-11-06 21:14:06,834 INFO L226 Difference]: Without dead ends: 130877 [2018-11-06 21:14:06,898 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 582 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:14:06,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130877 states. [2018-11-06 21:14:08,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130877 to 126364. [2018-11-06 21:14:08,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126364 states. [2018-11-06 21:14:08,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126364 states to 126364 states and 134868 transitions. [2018-11-06 21:14:08,308 INFO L78 Accepts]: Start accepts. Automaton has 126364 states and 134868 transitions. Word has length 582 [2018-11-06 21:14:08,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:14:08,309 INFO L480 AbstractCegarLoop]: Abstraction has 126364 states and 134868 transitions. [2018-11-06 21:14:08,309 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:14:08,310 INFO L276 IsEmpty]: Start isEmpty. Operand 126364 states and 134868 transitions. [2018-11-06 21:14:08,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 589 [2018-11-06 21:14:08,331 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:14:08,331 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:14:08,331 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:14:08,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:14:08,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1462200261, now seen corresponding path program 1 times [2018-11-06 21:14:08,332 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:14:08,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:14:08,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:14:08,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:14:08,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:14:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:14:09,513 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 650 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2018-11-06 21:14:09,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:14:09,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 21:14:09,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:14:09,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:14:09,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:14:09,515 INFO L87 Difference]: Start difference. First operand 126364 states and 134868 transitions. Second operand 6 states. [2018-11-06 21:14:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:14:16,343 INFO L93 Difference]: Finished difference Result 270742 states and 289402 transitions. [2018-11-06 21:14:16,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:14:16,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 588 [2018-11-06 21:14:16,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:14:16,495 INFO L225 Difference]: With dead ends: 270742 [2018-11-06 21:14:16,495 INFO L226 Difference]: Without dead ends: 144380 [2018-11-06 21:14:16,557 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:14:16,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144380 states. [2018-11-06 21:14:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144380 to 140652. [2018-11-06 21:14:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140652 states. [2018-11-06 21:14:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140652 states to 140652 states and 148217 transitions. [2018-11-06 21:14:18,809 INFO L78 Accepts]: Start accepts. Automaton has 140652 states and 148217 transitions. Word has length 588 [2018-11-06 21:14:18,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:14:18,810 INFO L480 AbstractCegarLoop]: Abstraction has 140652 states and 148217 transitions. [2018-11-06 21:14:18,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:14:18,810 INFO L276 IsEmpty]: Start isEmpty. Operand 140652 states and 148217 transitions. [2018-11-06 21:14:18,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2018-11-06 21:14:18,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:14:18,834 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 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] [2018-11-06 21:14:18,834 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:14:18,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:14:18,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1747693829, now seen corresponding path program 1 times [2018-11-06 21:14:18,834 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:14:18,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:14:18,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:14:18,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:14:18,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:14:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:14:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 822 backedges. 654 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2018-11-06 21:14:19,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:14:19,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:14:19,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:14:19,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:14:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:14:19,357 INFO L87 Difference]: Start difference. First operand 140652 states and 148217 transitions. Second operand 4 states. [2018-11-06 21:14:26,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:14:26,232 INFO L93 Difference]: Finished difference Result 282054 states and 297172 transitions. [2018-11-06 21:14:26,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:14:26,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 592 [2018-11-06 21:14:26,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:14:26,374 INFO L225 Difference]: With dead ends: 282054 [2018-11-06 21:14:26,374 INFO L226 Difference]: Without dead ends: 138394 [2018-11-06 21:14:26,424 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:14:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138394 states. [2018-11-06 21:14:27,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138394 to 133882. [2018-11-06 21:14:27,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133882 states. [2018-11-06 21:14:27,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133882 states to 133882 states and 138683 transitions. [2018-11-06 21:14:27,507 INFO L78 Accepts]: Start accepts. Automaton has 133882 states and 138683 transitions. Word has length 592 [2018-11-06 21:14:27,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:14:27,507 INFO L480 AbstractCegarLoop]: Abstraction has 133882 states and 138683 transitions. [2018-11-06 21:14:27,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:14:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 133882 states and 138683 transitions. [2018-11-06 21:14:27,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 604 [2018-11-06 21:14:27,520 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:14:27,520 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-11-06 21:14:27,520 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:14:27,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:14:27,521 INFO L82 PathProgramCache]: Analyzing trace with hash -665011732, now seen corresponding path program 1 times [2018-11-06 21:14:27,521 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:14:27,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:14:27,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:14:27,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:14:27,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:14:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:14:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 557 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2018-11-06 21:14:28,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:14:28,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:14:28,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:14:28,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:14:28,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:14:28,338 INFO L87 Difference]: Start difference. First operand 133882 states and 138683 transitions. Second operand 4 states. [2018-11-06 21:14:35,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:14:35,642 INFO L93 Difference]: Finished difference Result 267010 states and 276607 transitions. [2018-11-06 21:14:35,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:14:35,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 603 [2018-11-06 21:14:35,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:14:35,781 INFO L225 Difference]: With dead ends: 267010 [2018-11-06 21:14:35,782 INFO L226 Difference]: Without dead ends: 133882 [2018-11-06 21:14:35,853 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:14:35,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133882 states. [2018-11-06 21:14:37,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133882 to 127114. [2018-11-06 21:14:37,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127114 states. [2018-11-06 21:14:37,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127114 states to 127114 states and 130731 transitions. [2018-11-06 21:14:37,589 INFO L78 Accepts]: Start accepts. Automaton has 127114 states and 130731 transitions. Word has length 603 [2018-11-06 21:14:37,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:14:37,589 INFO L480 AbstractCegarLoop]: Abstraction has 127114 states and 130731 transitions. [2018-11-06 21:14:37,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:14:37,589 INFO L276 IsEmpty]: Start isEmpty. Operand 127114 states and 130731 transitions. [2018-11-06 21:14:37,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2018-11-06 21:14:37,602 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:14:37,603 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:14:37,603 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:14:37,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:14:37,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1504455587, now seen corresponding path program 1 times [2018-11-06 21:14:37,604 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:14:37,604 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:14:37,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:14:37,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:14:37,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:14:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:14:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2018-11-06 21:14:38,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:14:38,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:14:38,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:14:38,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:14:38,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:14:38,469 INFO L87 Difference]: Start difference. First operand 127114 states and 130731 transitions. Second operand 5 states. [2018-11-06 21:14:48,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:14:48,119 INFO L93 Difference]: Finished difference Result 365546 states and 376003 transitions. [2018-11-06 21:14:48,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:14:48,119 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 634 [2018-11-06 21:14:48,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:14:48,371 INFO L225 Difference]: With dead ends: 365546 [2018-11-06 21:14:48,371 INFO L226 Difference]: Without dead ends: 239186 [2018-11-06 21:14:48,452 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:14:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239186 states. [2018-11-06 21:14:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239186 to 179776. [2018-11-06 21:14:50,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179776 states. [2018-11-06 21:14:50,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179776 states to 179776 states and 184327 transitions. [2018-11-06 21:14:50,955 INFO L78 Accepts]: Start accepts. Automaton has 179776 states and 184327 transitions. Word has length 634 [2018-11-06 21:14:50,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:14:50,956 INFO L480 AbstractCegarLoop]: Abstraction has 179776 states and 184327 transitions. [2018-11-06 21:14:50,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 21:14:50,956 INFO L276 IsEmpty]: Start isEmpty. Operand 179776 states and 184327 transitions. [2018-11-06 21:14:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2018-11-06 21:14:50,975 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:14:50,975 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-11-06 21:14:50,976 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:14:50,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:14:50,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1685967853, now seen corresponding path program 1 times [2018-11-06 21:14:50,976 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:14:50,976 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:14:50,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:14:50,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:14:50,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:14:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:14:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 851 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-11-06 21:14:51,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:14:51,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:14:51,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:14:51,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:14:51,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:14:51,653 INFO L87 Difference]: Start difference. First operand 179776 states and 184327 transitions. Second operand 4 states. [2018-11-06 21:15:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:15:01,126 INFO L93 Difference]: Finished difference Result 342977 states and 351972 transitions. [2018-11-06 21:15:01,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:15:01,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 657 [2018-11-06 21:15:01,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:15:01,287 INFO L225 Difference]: With dead ends: 342977 [2018-11-06 21:15:01,287 INFO L226 Difference]: Without dead ends: 163955 [2018-11-06 21:15:01,367 INFO L604 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 [2018-11-06 21:15:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163955 states. [2018-11-06 21:15:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163955 to 144403. [2018-11-06 21:15:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144403 states. [2018-11-06 21:15:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144403 states to 144403 states and 147207 transitions. [2018-11-06 21:15:03,191 INFO L78 Accepts]: Start accepts. Automaton has 144403 states and 147207 transitions. Word has length 657 [2018-11-06 21:15:03,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:15:03,191 INFO L480 AbstractCegarLoop]: Abstraction has 144403 states and 147207 transitions. [2018-11-06 21:15:03,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:15:03,191 INFO L276 IsEmpty]: Start isEmpty. Operand 144403 states and 147207 transitions. [2018-11-06 21:15:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2018-11-06 21:15:03,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:15:03,261 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:15:03,262 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:15:03,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:15:03,262 INFO L82 PathProgramCache]: Analyzing trace with hash 942381596, now seen corresponding path program 1 times [2018-11-06 21:15:03,262 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:15:03,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:15:03,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:03,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:15:03,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:15:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 153 proven. 382 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-11-06 21:15:06,236 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:15:06,236 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 21:15:06,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:15:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:15:06,484 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:15:08,140 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 203 proven. 332 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-11-06 21:15:08,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:15:08,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-11-06 21:15:08,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:15:08,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:15:08,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:15:08,163 INFO L87 Difference]: Start difference. First operand 144403 states and 147207 transitions. Second operand 7 states. [2018-11-06 21:15:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:15:22,243 INFO L93 Difference]: Finished difference Result 351975 states and 359101 transitions. [2018-11-06 21:15:22,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 21:15:22,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1037 [2018-11-06 21:15:22,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:15:22,481 INFO L225 Difference]: With dead ends: 351975 [2018-11-06 21:15:22,481 INFO L226 Difference]: Without dead ends: 213590 [2018-11-06 21:15:22,560 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1041 GetRequests, 1035 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:15:22,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213590 states. [2018-11-06 21:15:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213590 to 174483. [2018-11-06 21:15:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174483 states. [2018-11-06 21:15:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174483 states to 174483 states and 178073 transitions. [2018-11-06 21:15:24,815 INFO L78 Accepts]: Start accepts. Automaton has 174483 states and 178073 transitions. Word has length 1037 [2018-11-06 21:15:24,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:15:24,816 INFO L480 AbstractCegarLoop]: Abstraction has 174483 states and 178073 transitions. [2018-11-06 21:15:24,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:15:24,816 INFO L276 IsEmpty]: Start isEmpty. Operand 174483 states and 178073 transitions. [2018-11-06 21:15:24,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1305 [2018-11-06 21:15:24,916 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:15:24,917 INFO L375 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:15:24,917 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:15:24,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:15:24,918 INFO L82 PathProgramCache]: Analyzing trace with hash -298410865, now seen corresponding path program 1 times [2018-11-06 21:15:24,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:15:24,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:15:24,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:24,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:15:24,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:15:27,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 1230 proven. 315 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-11-06 21:15:27,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:15:27,699 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:15:27,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:15:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:15:28,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:15:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 1230 proven. 315 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-11-06 21:15:29,550 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:15:29,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2018-11-06 21:15:29,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 21:15:29,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 21:15:29,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-06 21:15:29,552 INFO L87 Difference]: Start difference. First operand 174483 states and 178073 transitions. Second operand 6 states. [2018-11-06 21:15:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:15:45,812 INFO L93 Difference]: Finished difference Result 432437 states and 441572 transitions. [2018-11-06 21:15:45,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 21:15:45,816 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1304 [2018-11-06 21:15:45,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:15:46,114 INFO L225 Difference]: With dead ends: 432437 [2018-11-06 21:15:46,114 INFO L226 Difference]: Without dead ends: 262468 [2018-11-06 21:15:46,212 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1315 GetRequests, 1306 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:15:46,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262468 states. [2018-11-06 21:15:48,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262468 to 202305. [2018-11-06 21:15:48,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202305 states. [2018-11-06 21:15:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202305 states to 202305 states and 206422 transitions. [2018-11-06 21:15:48,939 INFO L78 Accepts]: Start accepts. Automaton has 202305 states and 206422 transitions. Word has length 1304 [2018-11-06 21:15:48,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:15:48,940 INFO L480 AbstractCegarLoop]: Abstraction has 202305 states and 206422 transitions. [2018-11-06 21:15:48,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 21:15:48,940 INFO L276 IsEmpty]: Start isEmpty. Operand 202305 states and 206422 transitions. [2018-11-06 21:15:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1580 [2018-11-06 21:15:49,076 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:15:49,077 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:15:49,077 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:15:49,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:15:49,078 INFO L82 PathProgramCache]: Analyzing trace with hash -128471034, now seen corresponding path program 1 times [2018-11-06 21:15:49,078 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:15:49,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:15:49,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:49,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:15:49,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:15:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:15:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3138 backedges. 2299 proven. 95 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-11-06 21:15:51,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:15:51,714 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:15:51,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:15:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:15:52,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:15:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3138 backedges. 2299 proven. 95 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2018-11-06 21:15:53,034 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:15:53,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-11-06 21:15:53,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:15:53,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:15:53,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:15:53,036 INFO L87 Difference]: Start difference. First operand 202305 states and 206422 transitions. Second operand 5 states. Received shutdown request... [2018-11-06 21:15:55,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:15:55,522 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:15:55,529 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:15:55,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:15:55 BoogieIcfgContainer [2018-11-06 21:15:55,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:15:55,530 INFO L168 Benchmark]: Toolchain (without parser) took 222464.65 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -735.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-06 21:15:55,531 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:15:55,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2093.33 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-06 21:15:55,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 601.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 797.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -983.2 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:15:55,534 INFO L168 Benchmark]: Boogie Preprocessor took 366.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. [2018-11-06 21:15:55,534 INFO L168 Benchmark]: RCFGBuilder took 8655.93 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 209.7 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -156.4 MB). Peak memory consumption was 617.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:15:55,535 INFO L168 Benchmark]: TraceAbstraction took 210739.58 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 167.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-06 21:15:55,541 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 2093.33 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 601.88 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 797.4 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -983.2 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 366.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.0 MB). Peak memory consumption was 35.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8655.93 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 209.7 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -156.4 MB). Peak memory consumption was 617.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210739.58 ms. Allocated memory was 2.5 GB in the beginning and 4.6 GB in the end (delta: 2.1 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 167.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 168]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 168). Cancelled while BasicCegarLoop was constructing difference of abstraction (202305states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (5177 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 210.6s OverallTime, 17 OverallIterations, 8 TraceHistogramMax, 162.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8720 SDtfs, 49405 SDslu, 1245 SDs, 0 SdLazy, 89706 SolverSat, 17323 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 122.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5130 GetRequests, 5046 SyntacticMatches, 22 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202305occurred in iteration=16, 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: 21.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 217342 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 14884 NumberOfCodeBlocks, 14884 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 14861 ConstructedInterpolants, 0 QuantifiedInterpolants, 32809019 SizeOfPredicates, 4 NumberOfNonLiveVariables, 5911 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 23 InterpolantComputations, 14 PerfectInterpolantSequences, 16714/18272 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown