java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:12:58,447 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:12:58,449 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:12:58,466 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:12:58,466 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:12:58,467 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:12:58,469 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:12:58,470 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:12:58,472 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:12:58,473 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:12:58,474 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:12:58,474 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:12:58,475 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:12:58,476 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:12:58,478 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:12:58,478 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:12:58,479 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:12:58,481 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:12:58,484 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:12:58,485 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:12:58,486 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:12:58,488 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:12:58,490 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:12:58,508 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:12:58,529 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:12:58,529 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:12:58,530 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:12:58,531 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:12:58,531 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:12:58,531 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:12:58,532 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:12:58,532 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:12:58,532 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:12:58,532 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:12:58,532 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:12:58,533 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:12:58,533 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:12:58,533 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:12:58,533 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:12:58,534 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:12:58,534 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:12:58,534 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:12:58,534 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:12:58,534 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:12:58,534 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:12:58,535 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:12:58,535 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:12:58,535 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:12:58,535 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:12:58,535 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:12:58,536 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:12:58,536 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:12:58,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:12:58,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:12:58,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:12:58,609 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:12:58,609 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:12:58,610 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label58_false-unreach-call.c [2018-10-24 14:12:58,677 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5069959b/d29d315b9493416394705f6e79b645d6/FLAG09b2cc649 [2018-10-24 14:12:59,471 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:12:59,472 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label58_false-unreach-call.c [2018-10-24 14:12:59,512 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5069959b/d29d315b9493416394705f6e79b645d6/FLAG09b2cc649 [2018-10-24 14:12:59,531 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5069959b/d29d315b9493416394705f6e79b645d6 [2018-10-24 14:12:59,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:12:59,548 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:12:59,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:12:59,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:12:59,558 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:12:59,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:12:59" (1/1) ... [2018-10-24 14:12:59,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:12:59, skipping insertion in model container [2018-10-24 14:12:59,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:12:59" (1/1) ... [2018-10-24 14:12:59,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:12:59,770 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:13:01,296 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:13:01,302 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:13:01,916 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:13:01,953 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:13:01,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01 WrapperNode [2018-10-24 14:13:01,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:13:01,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:13:01,955 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:13:01,955 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:13:01,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (1/1) ... [2018-10-24 14:13:02,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (1/1) ... [2018-10-24 14:13:02,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:13:02,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:13:02,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:13:02,735 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:13:02,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (1/1) ... [2018-10-24 14:13:02,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (1/1) ... [2018-10-24 14:13:02,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (1/1) ... [2018-10-24 14:13:02,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (1/1) ... [2018-10-24 14:13:03,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (1/1) ... [2018-10-24 14:13:03,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (1/1) ... [2018-10-24 14:13:03,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (1/1) ... [2018-10-24 14:13:03,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:13:03,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:13:03,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:13:03,244 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:13:03,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:13:03,315 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:13:03,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:13:03,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:13:20,057 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:13:20,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:13:20 BoogieIcfgContainer [2018-10-24 14:13:20,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:13:20,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:13:20,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:13:20,062 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:13:20,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:12:59" (1/3) ... [2018-10-24 14:13:20,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4385c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:13:20, skipping insertion in model container [2018-10-24 14:13:20,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:13:01" (2/3) ... [2018-10-24 14:13:20,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b4385c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:13:20, skipping insertion in model container [2018-10-24 14:13:20,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:13:20" (3/3) ... [2018-10-24 14:13:20,066 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label58_false-unreach-call.c [2018-10-24 14:13:20,077 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:13:20,086 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:13:20,103 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:13:20,158 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:13:20,159 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:13:20,159 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:13:20,159 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:13:20,160 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:13:20,160 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:13:20,160 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:13:20,160 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:13:20,160 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:13:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:13:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 14:13:20,209 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:20,210 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:13:20,213 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:20,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:20,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1534999810, now seen corresponding path program 1 times [2018-10-24 14:13:20,220 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:20,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:20,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:20,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:20,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:13:20,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:20,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:13:20,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:20,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:20,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:20,605 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:13:39,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:39,197 INFO L93 Difference]: Finished difference Result 3973 states and 7416 transitions. [2018-10-24 14:13:39,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:39,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-10-24 14:13:39,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:39,247 INFO L225 Difference]: With dead ends: 3973 [2018-10-24 14:13:39,247 INFO L226 Difference]: Without dead ends: 2867 [2018-10-24 14:13:39,256 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 [2018-10-24 14:13:39,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2018-10-24 14:13:39,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 1938. [2018-10-24 14:13:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2018-10-24 14:13:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 3240 transitions. [2018-10-24 14:13:39,420 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 3240 transitions. Word has length 13 [2018-10-24 14:13:39,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:39,420 INFO L481 AbstractCegarLoop]: Abstraction has 1938 states and 3240 transitions. [2018-10-24 14:13:39,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:13:39,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 3240 transitions. [2018-10-24 14:13:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-24 14:13:39,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:39,427 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:13:39,427 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:39,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:39,428 INFO L82 PathProgramCache]: Analyzing trace with hash 224743560, now seen corresponding path program 1 times [2018-10-24 14:13:39,428 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:39,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:39,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:39,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:39,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:13:39,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:39,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:13:39,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:39,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:39,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:39,821 INFO L87 Difference]: Start difference. First operand 1938 states and 3240 transitions. Second operand 4 states. [2018-10-24 14:13:53,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:53,211 INFO L93 Difference]: Finished difference Result 7101 states and 12101 transitions. [2018-10-24 14:13:53,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:53,212 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2018-10-24 14:13:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:53,239 INFO L225 Difference]: With dead ends: 7101 [2018-10-24 14:13:53,239 INFO L226 Difference]: Without dead ends: 5165 [2018-10-24 14:13:53,244 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2018-10-24 14:13:53,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 3540. [2018-10-24 14:13:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2018-10-24 14:13:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 5445 transitions. [2018-10-24 14:13:53,329 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 5445 transitions. Word has length 85 [2018-10-24 14:13:53,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:53,330 INFO L481 AbstractCegarLoop]: Abstraction has 3540 states and 5445 transitions. [2018-10-24 14:13:53,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:13:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 5445 transitions. [2018-10-24 14:13:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-24 14:13:53,333 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:53,334 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:13:53,334 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:53,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:53,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1641369973, now seen corresponding path program 1 times [2018-10-24 14:13:53,335 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:53,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:53,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:53,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:53,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:13:53,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:53,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:13:53,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:53,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:53,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:53,551 INFO L87 Difference]: Start difference. First operand 3540 states and 5445 transitions. Second operand 4 states. [2018-10-24 14:14:09,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:09,281 INFO L93 Difference]: Finished difference Result 13554 states and 21081 transitions. [2018-10-24 14:14:09,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:09,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2018-10-24 14:14:09,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:09,331 INFO L225 Difference]: With dead ends: 13554 [2018-10-24 14:14:09,331 INFO L226 Difference]: Without dead ends: 10016 [2018-10-24 14:14:09,339 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 [2018-10-24 14:14:09,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10016 states. [2018-10-24 14:14:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10016 to 6718. [2018-10-24 14:14:09,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6718 states. [2018-10-24 14:14:09,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 9885 transitions. [2018-10-24 14:14:09,491 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 9885 transitions. Word has length 99 [2018-10-24 14:14:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:09,492 INFO L481 AbstractCegarLoop]: Abstraction has 6718 states and 9885 transitions. [2018-10-24 14:14:09,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:09,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 9885 transitions. [2018-10-24 14:14:09,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 14:14:09,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:09,495 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:14:09,495 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:09,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:09,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1687858136, now seen corresponding path program 1 times [2018-10-24 14:14:09,496 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:09,496 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:09,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:09,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:09,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:14:09,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:09,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:14:09,832 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:14:09,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:14:09,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:09,833 INFO L87 Difference]: Start difference. First operand 6718 states and 9885 transitions. Second operand 4 states. [2018-10-24 14:14:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:23,461 INFO L93 Difference]: Finished difference Result 23854 states and 35012 transitions. [2018-10-24 14:14:23,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:23,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-10-24 14:14:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:23,531 INFO L225 Difference]: With dead ends: 23854 [2018-10-24 14:14:23,532 INFO L226 Difference]: Without dead ends: 17138 [2018-10-24 14:14:23,548 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 [2018-10-24 14:14:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17138 states. [2018-10-24 14:14:23,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17138 to 13037. [2018-10-24 14:14:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13037 states. [2018-10-24 14:14:23,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13037 states to 13037 states and 18976 transitions. [2018-10-24 14:14:23,849 INFO L78 Accepts]: Start accepts. Automaton has 13037 states and 18976 transitions. Word has length 117 [2018-10-24 14:14:23,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:23,850 INFO L481 AbstractCegarLoop]: Abstraction has 13037 states and 18976 transitions. [2018-10-24 14:14:23,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:23,850 INFO L276 IsEmpty]: Start isEmpty. Operand 13037 states and 18976 transitions. [2018-10-24 14:14:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 14:14:23,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:23,860 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:14:23,860 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:23,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:23,861 INFO L82 PathProgramCache]: Analyzing trace with hash -98403656, now seen corresponding path program 1 times [2018-10-24 14:14:23,861 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:23,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:23,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:23,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:23,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:14:24,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:24,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:14:24,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:14:24,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:14:24,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:24,329 INFO L87 Difference]: Start difference. First operand 13037 states and 18976 transitions. Second operand 4 states. [2018-10-24 14:14:37,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:38,000 INFO L93 Difference]: Finished difference Result 51334 states and 74903 transitions. [2018-10-24 14:14:38,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:38,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2018-10-24 14:14:38,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:38,086 INFO L225 Difference]: With dead ends: 51334 [2018-10-24 14:14:38,087 INFO L226 Difference]: Without dead ends: 38299 [2018-10-24 14:14:38,112 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 [2018-10-24 14:14:38,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38299 states. [2018-10-24 14:14:38,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38299 to 38259. [2018-10-24 14:14:38,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38259 states. [2018-10-24 14:14:38,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38259 states to 38259 states and 50697 transitions. [2018-10-24 14:14:38,713 INFO L78 Accepts]: Start accepts. Automaton has 38259 states and 50697 transitions. Word has length 147 [2018-10-24 14:14:38,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:38,714 INFO L481 AbstractCegarLoop]: Abstraction has 38259 states and 50697 transitions. [2018-10-24 14:14:38,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand 38259 states and 50697 transitions. [2018-10-24 14:14:38,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 14:14:38,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:38,717 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:14:38,717 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:38,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:38,718 INFO L82 PathProgramCache]: Analyzing trace with hash -497647422, now seen corresponding path program 1 times [2018-10-24 14:14:38,718 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:38,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:38,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:38,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:38,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:14:39,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:39,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:14:39,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:14:39,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:14:39,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:39,041 INFO L87 Difference]: Start difference. First operand 38259 states and 50697 transitions. Second operand 4 states. [2018-10-24 14:14:54,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:54,350 INFO L93 Difference]: Finished difference Result 130933 states and 171802 transitions. [2018-10-24 14:14:54,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:54,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-10-24 14:14:54,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:54,535 INFO L225 Difference]: With dead ends: 130933 [2018-10-24 14:14:54,535 INFO L226 Difference]: Without dead ends: 92676 [2018-10-24 14:14:54,603 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 [2018-10-24 14:14:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92676 states. [2018-10-24 14:14:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92676 to 72143. [2018-10-24 14:14:56,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72143 states. [2018-10-24 14:14:56,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72143 states to 72143 states and 90446 transitions. [2018-10-24 14:14:56,228 INFO L78 Accepts]: Start accepts. Automaton has 72143 states and 90446 transitions. Word has length 151 [2018-10-24 14:14:56,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:56,229 INFO L481 AbstractCegarLoop]: Abstraction has 72143 states and 90446 transitions. [2018-10-24 14:14:56,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:56,229 INFO L276 IsEmpty]: Start isEmpty. Operand 72143 states and 90446 transitions. [2018-10-24 14:14:56,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-10-24 14:14:56,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:56,234 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:14:56,235 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:56,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:56,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1115686289, now seen corresponding path program 1 times [2018-10-24 14:14:56,235 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:56,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:56,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:56,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:56,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 14:14:56,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:56,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:14:56,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:14:56,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:14:56,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:14:56,546 INFO L87 Difference]: Start difference. First operand 72143 states and 90446 transitions. Second operand 3 states. [2018-10-24 14:15:03,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:15:03,798 INFO L93 Difference]: Finished difference Result 201016 states and 251738 transitions. [2018-10-24 14:15:03,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:15:03,807 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 245 [2018-10-24 14:15:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:15:04,070 INFO L225 Difference]: With dead ends: 201016 [2018-10-24 14:15:04,070 INFO L226 Difference]: Without dead ends: 128875 [2018-10-24 14:15:04,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:15:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128875 states. [2018-10-24 14:15:06,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128875 to 128084. [2018-10-24 14:15:06,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128084 states. [2018-10-24 14:15:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128084 states to 128084 states and 150908 transitions. [2018-10-24 14:15:06,807 INFO L78 Accepts]: Start accepts. Automaton has 128084 states and 150908 transitions. Word has length 245 [2018-10-24 14:15:06,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:15:06,808 INFO L481 AbstractCegarLoop]: Abstraction has 128084 states and 150908 transitions. [2018-10-24 14:15:06,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:15:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 128084 states and 150908 transitions. [2018-10-24 14:15:06,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-24 14:15:06,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:15:06,819 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:15:06,819 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:15:06,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:15:06,820 INFO L82 PathProgramCache]: Analyzing trace with hash 852106886, now seen corresponding path program 1 times [2018-10-24 14:15:06,820 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:15:06,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:15:06,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:06,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:15:06,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:15:07,178 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-10-24 14:15:07,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:15:07,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:15:07,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:15:07,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:15:07,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:15:07,180 INFO L87 Difference]: Start difference. First operand 128084 states and 150908 transitions. Second operand 5 states. [2018-10-24 14:15:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:15:22,137 INFO L93 Difference]: Finished difference Result 268007 states and 314386 transitions. [2018-10-24 14:15:22,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:15:22,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2018-10-24 14:15:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:15:22,310 INFO L225 Difference]: With dead ends: 268007 [2018-10-24 14:15:22,310 INFO L226 Difference]: Without dead ends: 139925 [2018-10-24 14:15:22,380 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:15:22,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139925 states. [2018-10-24 14:15:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139925 to 138328. [2018-10-24 14:15:23,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138328 states. [2018-10-24 14:15:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138328 states to 138328 states and 161461 transitions. [2018-10-24 14:15:23,685 INFO L78 Accepts]: Start accepts. Automaton has 138328 states and 161461 transitions. Word has length 249 [2018-10-24 14:15:23,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:15:23,686 INFO L481 AbstractCegarLoop]: Abstraction has 138328 states and 161461 transitions. [2018-10-24 14:15:23,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:15:23,686 INFO L276 IsEmpty]: Start isEmpty. Operand 138328 states and 161461 transitions. [2018-10-24 14:15:23,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2018-10-24 14:15:23,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:15:23,694 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:15:23,694 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:15:23,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:15:23,695 INFO L82 PathProgramCache]: Analyzing trace with hash -968061285, now seen corresponding path program 1 times [2018-10-24 14:15:23,695 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:15:23,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:15:23,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:23,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:15:23,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:15:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-10-24 14:15:23,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:15:23,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:15:23,991 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:15:23,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:15:23,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:15:23,992 INFO L87 Difference]: Start difference. First operand 138328 states and 161461 transitions. Second operand 5 states. [2018-10-24 14:15:51,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:15:51,877 INFO L93 Difference]: Finished difference Result 362855 states and 426518 transitions. [2018-10-24 14:15:51,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:15:51,877 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2018-10-24 14:15:51,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:15:52,212 INFO L225 Difference]: With dead ends: 362855 [2018-10-24 14:15:52,213 INFO L226 Difference]: Without dead ends: 225317 [2018-10-24 14:15:52,334 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:15:52,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225317 states. [2018-10-24 14:15:55,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225317 to 215652. [2018-10-24 14:15:55,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215652 states. [2018-10-24 14:15:55,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215652 states to 215652 states and 250528 transitions. [2018-10-24 14:15:55,880 INFO L78 Accepts]: Start accepts. Automaton has 215652 states and 250528 transitions. Word has length 313 [2018-10-24 14:15:55,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:15:55,880 INFO L481 AbstractCegarLoop]: Abstraction has 215652 states and 250528 transitions. [2018-10-24 14:15:55,880 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:15:55,881 INFO L276 IsEmpty]: Start isEmpty. Operand 215652 states and 250528 transitions. [2018-10-24 14:15:55,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-10-24 14:15:55,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:15:55,889 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-10-24 14:15:55,889 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:15:55,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:15:55,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1255053189, now seen corresponding path program 1 times [2018-10-24 14:15:55,890 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:15:55,890 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:15:55,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:55,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:15:55,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:15:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:15:57,887 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2018-10-24 14:15:57,887 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:15:57,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:15:57,888 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:15:57,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:15:57,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:15:57,889 INFO L87 Difference]: Start difference. First operand 215652 states and 250528 transitions. Second operand 5 states. [2018-10-24 14:16:16,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:16:16,468 INFO L93 Difference]: Finished difference Result 529056 states and 615466 transitions. [2018-10-24 14:16:16,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:16:16,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 346 [2018-10-24 14:16:16,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:16:16,932 INFO L225 Difference]: With dead ends: 529056 [2018-10-24 14:16:16,933 INFO L226 Difference]: Without dead ends: 314194 [2018-10-24 14:16:17,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:16:17,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314194 states. [2018-10-24 14:16:27,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314194 to 311786. [2018-10-24 14:16:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311786 states. [2018-10-24 14:16:27,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311786 states to 311786 states and 353267 transitions. [2018-10-24 14:16:27,430 INFO L78 Accepts]: Start accepts. Automaton has 311786 states and 353267 transitions. Word has length 346 [2018-10-24 14:16:27,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:16:27,431 INFO L481 AbstractCegarLoop]: Abstraction has 311786 states and 353267 transitions. [2018-10-24 14:16:27,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:16:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 311786 states and 353267 transitions. [2018-10-24 14:16:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2018-10-24 14:16:27,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:16:27,462 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:16:27,462 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:16:27,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:16:27,463 INFO L82 PathProgramCache]: Analyzing trace with hash -925926678, now seen corresponding path program 1 times [2018-10-24 14:16:27,463 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:16:27,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:16:27,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:16:27,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:16:27,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:16:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:16:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 371 proven. 5 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2018-10-24 14:16:28,027 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:16:28,027 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:16:28,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:16:29,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:16:29,039 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:16:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2018-10-24 14:16:29,412 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:16:29,413 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 14:16:29,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:16:29,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:16:29,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:16:29,416 INFO L87 Difference]: Start difference. First operand 311786 states and 353267 transitions. Second operand 5 states. [2018-10-24 14:16:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:16:44,517 INFO L93 Difference]: Finished difference Result 619601 states and 702921 transitions. [2018-10-24 14:16:44,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:16:44,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 503 [2018-10-24 14:16:44,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:16:45,169 INFO L225 Difference]: With dead ends: 619601 [2018-10-24 14:16:45,170 INFO L226 Difference]: Without dead ends: 308605 [2018-10-24 14:16:45,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 504 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:16:45,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308605 states. Received shutdown request... [2018-10-24 14:16:47,655 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:16:47,660 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:16:47,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:16:47 BoogieIcfgContainer [2018-10-24 14:16:47,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:16:47,662 INFO L168 Benchmark]: Toolchain (without parser) took 228114.23 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 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 14:16:47,665 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:16:47,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2404.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:16:47,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 779.52 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:16:47,670 INFO L168 Benchmark]: Boogie Preprocessor took 508.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 68.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 14:16:47,671 INFO L168 Benchmark]: RCFGBuilder took 16814.43 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 229.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 603.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:16:47,672 INFO L168 Benchmark]: TraceAbstraction took 207601.93 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -797.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 14:16:47,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2404.27 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 779.52 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 508.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 68.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16814.43 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 229.1 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 26.2 MB). Peak memory consumption was 603.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207601.93 ms. Allocated memory was 2.6 GB in the beginning and 4.6 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -797.4 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: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 207.5s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 177.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9854 SDtfs, 23943 SDslu, 3633 SDs, 0 SdLazy, 60782 SolverSat, 13482 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 146.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 548 GetRequests, 515 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311786occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 23.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 44987 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 2771 NumberOfCodeBlocks, 2771 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2759 ConstructedInterpolants, 0 QuantifiedInterpolants, 1944033 SizeOfPredicates, 1 NumberOfNonLiveVariables, 682 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 12 InterpolantComputations, 11 PerfectInterpolantSequences, 2880/2885 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown