java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:05:21,056 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:05:21,058 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:05:21,076 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:05:21,077 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:05:21,078 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:05:21,080 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:05:21,081 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:05:21,083 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:05:21,084 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:05:21,085 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:05:21,085 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:05:21,086 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:05:21,087 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:05:21,088 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:05:21,089 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:05:21,090 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:05:21,092 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:05:21,093 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:05:21,095 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:05:21,096 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:05:21,097 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:05:21,100 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 21:05:21,109 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 21:05:21,137 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:05:21,137 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:05:21,138 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:05:21,139 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 21:05:21,139 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 21:05:21,139 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 21:05:21,139 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 21:05:21,140 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:05:21,140 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:05:21,140 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:05:21,140 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:05:21,140 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:05:21,141 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:05:21,141 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:05:21,141 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:05:21,141 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:05:21,141 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:05:21,142 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:05:21,142 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:05:21,142 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:05:21,142 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:05:21,142 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:05:21,143 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:05:21,143 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 21:05:21,143 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:05:21,143 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:05:21,143 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:05:21,143 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:05:21,195 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:05:21,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:05:21,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:05:21,217 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:05:21,218 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:05:21,218 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c [2018-10-23 21:05:21,286 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2a1d84851/2c8cc891c42e4d018c0bf1eb87a18ae9/FLAG9518f8596 [2018-10-23 21:05:22,232 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:05:22,234 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c [2018-10-23 21:05:22,279 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2a1d84851/2c8cc891c42e4d018c0bf1eb87a18ae9/FLAG9518f8596 [2018-10-23 21:05:22,299 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2a1d84851/2c8cc891c42e4d018c0bf1eb87a18ae9 [2018-10-23 21:05:22,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:05:22,314 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:05:22,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:05:22,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:05:22,320 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:05:22,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:05:22" (1/1) ... [2018-10-23 21:05:22,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46764b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:22, skipping insertion in model container [2018-10-23 21:05:22,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:05:22" (1/1) ... [2018-10-23 21:05:22,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:05:22,585 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:05:24,494 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:05:24,500 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:05:25,974 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:05:26,040 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:05:26,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26 WrapperNode [2018-10-23 21:05:26,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:05:26,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:05:26,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:05:26,044 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:05:26,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (1/1) ... [2018-10-23 21:05:26,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (1/1) ... [2018-10-23 21:05:27,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:05:27,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:05:27,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:05:27,120 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:05:27,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (1/1) ... [2018-10-23 21:05:27,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (1/1) ... [2018-10-23 21:05:27,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (1/1) ... [2018-10-23 21:05:27,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (1/1) ... [2018-10-23 21:05:27,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (1/1) ... [2018-10-23 21:05:27,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (1/1) ... [2018-10-23 21:05:27,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (1/1) ... [2018-10-23 21:05:27,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:05:27,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:05:27,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:05:27,899 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:05:27,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:05:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 21:05:27,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:05:27,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:05:44,631 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:05:44,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:05:44 BoogieIcfgContainer [2018-10-23 21:05:44,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:05:44,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:05:44,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:05:44,637 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:05:44,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:05:22" (1/3) ... [2018-10-23 21:05:44,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d55561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:05:44, skipping insertion in model container [2018-10-23 21:05:44,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:05:26" (2/3) ... [2018-10-23 21:05:44,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d55561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:05:44, skipping insertion in model container [2018-10-23 21:05:44,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:05:44" (3/3) ... [2018-10-23 21:05:44,642 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label44_true-unreach-call.c [2018-10-23 21:05:44,652 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:05:44,663 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:05:44,683 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:05:44,738 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 21:05:44,739 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:05:44,739 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:05:44,739 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:05:44,739 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:05:44,739 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:05:44,739 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:05:44,740 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:05:44,740 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:05:44,808 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-23 21:05:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-23 21:05:44,824 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:05:44,826 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] [2018-10-23 21:05:44,829 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:05:44,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:05:44,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1433927590, now seen corresponding path program 1 times [2018-10-23 21:05:44,839 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:05:44,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:05:44,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:44,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:05:44,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:05:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:05:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:05:45,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:05:45,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:05:45,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:05:45,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:05:45,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:05:45,626 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-23 21:06:12,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:06:12,276 INFO L93 Difference]: Finished difference Result 6321 states and 12079 transitions. [2018-10-23 21:06:12,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:06:12,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-10-23 21:06:12,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:06:12,333 INFO L225 Difference]: With dead ends: 6321 [2018-10-23 21:06:12,334 INFO L226 Difference]: Without dead ends: 4565 [2018-10-23 21:06:12,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:06:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4565 states. [2018-10-23 21:06:12,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4565 to 4560. [2018-10-23 21:06:12,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2018-10-23 21:06:12,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 7503 transitions. [2018-10-23 21:06:12,558 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 7503 transitions. Word has length 35 [2018-10-23 21:06:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:06:12,559 INFO L481 AbstractCegarLoop]: Abstraction has 4560 states and 7503 transitions. [2018-10-23 21:06:12,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:06:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 7503 transitions. [2018-10-23 21:06:12,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-23 21:06:12,564 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:06:12,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:06:12,567 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:06:12,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:06:12,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1426030111, now seen corresponding path program 1 times [2018-10-23 21:06:12,568 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:06:12,568 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:06:12,569 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:06:12,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:06:12,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:06:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:06:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:06:12,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:06:12,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:06:12,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:06:12,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:06:12,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:06:12,989 INFO L87 Difference]: Start difference. First operand 4560 states and 7503 transitions. Second operand 4 states. [2018-10-23 21:06:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:06:41,260 INFO L93 Difference]: Finished difference Result 17539 states and 29072 transitions. [2018-10-23 21:06:41,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:06:41,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2018-10-23 21:06:41,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:06:41,326 INFO L225 Difference]: With dead ends: 17539 [2018-10-23 21:06:41,327 INFO L226 Difference]: Without dead ends: 12981 [2018-10-23 21:06:41,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:06:41,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12981 states. [2018-10-23 21:06:41,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12981 to 8660. [2018-10-23 21:06:41,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8660 states. [2018-10-23 21:06:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8660 states to 8660 states and 13864 transitions. [2018-10-23 21:06:41,524 INFO L78 Accepts]: Start accepts. Automaton has 8660 states and 13864 transitions. Word has length 105 [2018-10-23 21:06:41,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:06:41,524 INFO L481 AbstractCegarLoop]: Abstraction has 8660 states and 13864 transitions. [2018-10-23 21:06:41,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:06:41,524 INFO L276 IsEmpty]: Start isEmpty. Operand 8660 states and 13864 transitions. [2018-10-23 21:06:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-23 21:06:41,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:06:41,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:06:41,527 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:06:41,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:06:41,528 INFO L82 PathProgramCache]: Analyzing trace with hash -422930194, now seen corresponding path program 1 times [2018-10-23 21:06:41,528 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:06:41,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:06:41,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:06:41,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:06:41,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:06:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:06:41,832 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 21:06:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:06:41,874 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:06:41,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:06:41,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:06:41,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:06:41,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:06:41,876 INFO L87 Difference]: Start difference. First operand 8660 states and 13864 transitions. Second operand 4 states. [2018-10-23 21:07:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:07:04,044 INFO L93 Difference]: Finished difference Result 33824 states and 54421 transitions. [2018-10-23 21:07:04,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:07:04,044 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-10-23 21:07:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:07:04,111 INFO L225 Difference]: With dead ends: 33824 [2018-10-23 21:07:04,111 INFO L226 Difference]: Without dead ends: 25166 [2018-10-23 21:07:04,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:07:04,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25166 states. [2018-10-23 21:07:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25166 to 16872. [2018-10-23 21:07:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16872 states. [2018-10-23 21:07:04,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16872 states to 16872 states and 23661 transitions. [2018-10-23 21:07:04,429 INFO L78 Accepts]: Start accepts. Automaton has 16872 states and 23661 transitions. Word has length 127 [2018-10-23 21:07:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:07:04,430 INFO L481 AbstractCegarLoop]: Abstraction has 16872 states and 23661 transitions. [2018-10-23 21:07:04,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:07:04,430 INFO L276 IsEmpty]: Start isEmpty. Operand 16872 states and 23661 transitions. [2018-10-23 21:07:04,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-23 21:07:04,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:07:04,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:07:04,433 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:07:04,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:07:04,434 INFO L82 PathProgramCache]: Analyzing trace with hash 186252804, now seen corresponding path program 1 times [2018-10-23 21:07:04,434 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:07:04,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:07:04,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:04,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:07:04,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:07:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:07:04,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:07:04,748 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 21:07:04,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:07:04,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:07:04,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:07:04,749 INFO L87 Difference]: Start difference. First operand 16872 states and 23661 transitions. Second operand 4 states. [2018-10-23 21:07:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:07:21,419 INFO L93 Difference]: Finished difference Result 65437 states and 92309 transitions. [2018-10-23 21:07:21,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:07:21,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-10-23 21:07:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:07:21,495 INFO L225 Difference]: With dead ends: 65437 [2018-10-23 21:07:21,495 INFO L226 Difference]: Without dead ends: 48567 [2018-10-23 21:07:21,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:07:21,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48567 states. [2018-10-23 21:07:22,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48567 to 48556. [2018-10-23 21:07:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48556 states. [2018-10-23 21:07:22,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48556 states to 48556 states and 60402 transitions. [2018-10-23 21:07:22,131 INFO L78 Accepts]: Start accepts. Automaton has 48556 states and 60402 transitions. Word has length 152 [2018-10-23 21:07:22,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:07:22,131 INFO L481 AbstractCegarLoop]: Abstraction has 48556 states and 60402 transitions. [2018-10-23 21:07:22,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:07:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 48556 states and 60402 transitions. [2018-10-23 21:07:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2018-10-23 21:07:22,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:07:22,153 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:07:22,153 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:07:22,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:07:22,154 INFO L82 PathProgramCache]: Analyzing trace with hash 736486478, now seen corresponding path program 1 times [2018-10-23 21:07:22,154 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:07:22,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:07:22,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:22,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:07:22,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:07:22,820 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-10-23 21:07:22,954 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 18 [2018-10-23 21:07:23,151 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 26 [2018-10-23 21:07:23,537 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2018-10-23 21:07:23,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:07:23,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:07:23,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 21:07:23,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 21:07:23,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:07:23,540 INFO L87 Difference]: Start difference. First operand 48556 states and 60402 transitions. Second operand 7 states. [2018-10-23 21:07:46,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:07:46,785 INFO L93 Difference]: Finished difference Result 118982 states and 144120 transitions. [2018-10-23 21:07:46,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:07:46,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 554 [2018-10-23 21:07:46,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:07:46,877 INFO L225 Difference]: With dead ends: 118982 [2018-10-23 21:07:46,877 INFO L226 Difference]: Without dead ends: 70428 [2018-10-23 21:07:46,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-23 21:07:46,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70428 states. [2018-10-23 21:07:47,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70428 to 66324. [2018-10-23 21:07:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66324 states. [2018-10-23 21:07:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66324 states to 66324 states and 79036 transitions. [2018-10-23 21:07:47,613 INFO L78 Accepts]: Start accepts. Automaton has 66324 states and 79036 transitions. Word has length 554 [2018-10-23 21:07:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:07:47,613 INFO L481 AbstractCegarLoop]: Abstraction has 66324 states and 79036 transitions. [2018-10-23 21:07:47,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 21:07:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 66324 states and 79036 transitions. [2018-10-23 21:07:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2018-10-23 21:07:47,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:07:47,633 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:07:47,633 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:07:47,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:07:47,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1236237032, now seen corresponding path program 1 times [2018-10-23 21:07:47,634 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:07:47,634 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:07:47,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:47,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:07:47,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:07:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:07:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-10-23 21:07:48,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:07:48,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:07:48,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:07:48,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:07:48,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:07:48,282 INFO L87 Difference]: Start difference. First operand 66324 states and 79036 transitions. Second operand 4 states. [2018-10-23 21:08:07,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:08:07,957 INFO L93 Difference]: Finished difference Result 162708 states and 196899 transitions. [2018-10-23 21:08:07,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:08:07,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 582 [2018-10-23 21:08:07,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:08:08,060 INFO L225 Difference]: With dead ends: 162708 [2018-10-23 21:08:08,060 INFO L226 Difference]: Without dead ends: 96386 [2018-10-23 21:08:08,113 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:08:08,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96386 states. [2018-10-23 21:08:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96386 to 96375. [2018-10-23 21:08:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96375 states. [2018-10-23 21:08:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96375 states to 96375 states and 111945 transitions. [2018-10-23 21:08:09,516 INFO L78 Accepts]: Start accepts. Automaton has 96375 states and 111945 transitions. Word has length 582 [2018-10-23 21:08:09,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:08:09,517 INFO L481 AbstractCegarLoop]: Abstraction has 96375 states and 111945 transitions. [2018-10-23 21:08:09,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:08:09,517 INFO L276 IsEmpty]: Start isEmpty. Operand 96375 states and 111945 transitions. [2018-10-23 21:08:09,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2018-10-23 21:08:09,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:08:09,555 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:08:09,555 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:08:09,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:08:09,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1329973613, now seen corresponding path program 1 times [2018-10-23 21:08:09,556 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:08:09,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:08:09,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:09,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:08:09,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:08:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 21:08:10,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:08:10,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:08:10,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:08:10,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:08:10,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:08:10,739 INFO L87 Difference]: Start difference. First operand 96375 states and 111945 transitions. Second operand 4 states. [2018-10-23 21:08:29,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:08:29,370 INFO L93 Difference]: Finished difference Result 192750 states and 223895 transitions. [2018-10-23 21:08:29,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:08:29,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 890 [2018-10-23 21:08:29,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:08:29,488 INFO L225 Difference]: With dead ends: 192750 [2018-10-23 21:08:29,488 INFO L226 Difference]: Without dead ends: 96377 [2018-10-23 21:08:29,539 INFO L605 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 [2018-10-23 21:08:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96377 states. [2018-10-23 21:08:30,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96377 to 89537. [2018-10-23 21:08:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89537 states. [2018-10-23 21:08:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89537 states to 89537 states and 99488 transitions. [2018-10-23 21:08:30,306 INFO L78 Accepts]: Start accepts. Automaton has 89537 states and 99488 transitions. Word has length 890 [2018-10-23 21:08:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:08:30,307 INFO L481 AbstractCegarLoop]: Abstraction has 89537 states and 99488 transitions. [2018-10-23 21:08:30,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:08:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 89537 states and 99488 transitions. [2018-10-23 21:08:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2018-10-23 21:08:30,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:08:30,322 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 21:08:30,322 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:08:30,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:08:30,323 INFO L82 PathProgramCache]: Analyzing trace with hash 250505118, now seen corresponding path program 1 times [2018-10-23 21:08:30,323 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:08:30,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:08:30,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:30,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:08:30,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:08:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 300 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-23 21:08:32,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:08:32,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:08:32,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:08:32,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:08:32,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:08:32,018 INFO L87 Difference]: Start difference. First operand 89537 states and 99488 transitions. Second operand 4 states. [2018-10-23 21:08:56,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:08:56,030 INFO L93 Difference]: Finished difference Result 252980 states and 286271 transitions. [2018-10-23 21:08:56,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:08:56,031 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 923 [2018-10-23 21:08:56,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:08:56,198 INFO L225 Difference]: With dead ends: 252980 [2018-10-23 21:08:56,199 INFO L226 Difference]: Without dead ends: 163445 [2018-10-23 21:08:56,251 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:08:56,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163445 states. [2018-10-23 21:08:57,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163445 to 163365. [2018-10-23 21:08:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163365 states. [2018-10-23 21:08:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163365 states to 163365 states and 181828 transitions. [2018-10-23 21:08:58,641 INFO L78 Accepts]: Start accepts. Automaton has 163365 states and 181828 transitions. Word has length 923 [2018-10-23 21:08:58,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:08:58,643 INFO L481 AbstractCegarLoop]: Abstraction has 163365 states and 181828 transitions. [2018-10-23 21:08:58,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:08:58,643 INFO L276 IsEmpty]: Start isEmpty. Operand 163365 states and 181828 transitions. [2018-10-23 21:08:58,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2018-10-23 21:08:58,661 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:08:58,662 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:08:58,663 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:08:58,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:08:58,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1523479339, now seen corresponding path program 1 times [2018-10-23 21:08:58,664 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 21:08:58,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 21:08:58,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:58,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:08:58,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:08:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:08:59,948 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 527 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-23 21:08:59,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:08:59,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 21:08:59,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 21:08:59,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 21:08:59,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 21:08:59,950 INFO L87 Difference]: Start difference. First operand 163365 states and 181828 transitions. Second operand 5 states. Received shutdown request... [2018-10-23 21:09:21,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:09:21,582 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:09:21,588 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:09:21,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:09:21 BoogieIcfgContainer [2018-10-23 21:09:21,588 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:09:21,589 INFO L168 Benchmark]: Toolchain (without parser) took 239276.94 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -711.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 21:09:21,591 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:09:21,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3726.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 983.9 MB in the end (delta: 413.1 MB). Peak memory consumption was 413.1 MB. Max. memory is 7.1 GB. [2018-10-23 21:09:21,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 1075.95 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 848.8 MB). Free memory was 983.9 MB in the beginning and 2.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:09:21,593 INFO L168 Benchmark]: Boogie Preprocessor took 778.17 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 115.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 7.1 GB. [2018-10-23 21:09:21,594 INFO L168 Benchmark]: RCFGBuilder took 16734.42 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 276.3 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 514.3 MB). Peak memory consumption was 790.6 MB. Max. memory is 7.1 GB. [2018-10-23 21:09:21,595 INFO L168 Benchmark]: TraceAbstraction took 216954.69 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 879.2 MB). Free memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: -603.5 MB). Peak memory consumption was 275.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:09:21,601 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3726.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 983.9 MB in the end (delta: 413.1 MB). Peak memory consumption was 413.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1075.95 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 848.8 MB). Free memory was 983.9 MB in the beginning and 2.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 778.17 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 115.3 MB). Peak memory consumption was 115.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16734.42 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 276.3 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 514.3 MB). Peak memory consumption was 790.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216954.69 ms. Allocated memory was 2.7 GB in the beginning and 3.5 GB in the end (delta: 879.2 MB). Free memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: -603.5 MB). Peak memory consumption was 275.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was constructing difference of abstraction (163365states) and FLOYD_HOARE automaton (currently 4 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (269297 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 216.8s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 201.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15058 SDtfs, 38124 SDslu, 3597 SDs, 0 SdLazy, 84633 SolverSat, 16061 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 173.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163365occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 23666 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 4325 NumberOfCodeBlocks, 4325 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 4316 ConstructedInterpolants, 0 QuantifiedInterpolants, 6941611 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 3269/3269 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown