java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:39:37,894 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:39:37,896 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:39:37,911 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:39:37,912 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:39:37,913 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:39:37,918 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:39:37,923 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:39:37,925 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:39:37,933 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:39:37,935 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:39:37,935 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:39:37,936 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:39:37,942 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:39:37,953 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:39:37,954 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:39:37,955 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:39:37,961 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:39:37,962 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:39:37,966 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:39:37,967 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:39:37,968 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:39:37,971 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 21:39:37,985 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:39:38,015 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:39:38,017 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:39:38,018 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:39:38,018 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:39:38,018 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:39:38,022 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:39:38,022 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:39:38,022 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:39:38,022 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:39:38,023 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:39:38,023 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:39:38,023 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:39:38,023 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:39:38,023 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:39:38,024 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:39:38,024 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:39:38,024 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:39:38,024 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:39:38,024 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:39:38,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:39:38,026 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:39:38,026 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:39:38,026 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:39:38,026 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:39:38,026 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:39:38,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:39:38,027 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:39:38,027 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:39:38,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:39:38,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:39:38,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:39:38,108 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:39:38,108 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:39:38,109 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-11-06 21:39:38,163 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc7c4d84/f6fc4de24aba49898ae9cbec047183cd/FLAG718f90537 [2018-11-06 21:39:38,924 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:39:38,925 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label11_true-unreach-call.c [2018-11-06 21:39:38,952 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc7c4d84/f6fc4de24aba49898ae9cbec047183cd/FLAG718f90537 [2018-11-06 21:39:38,973 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fc7c4d84/f6fc4de24aba49898ae9cbec047183cd [2018-11-06 21:39:38,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:39:38,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:39:38,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:39:38,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:39:38,996 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:39:38,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:39:38" (1/1) ... [2018-11-06 21:39:39,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a84e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:38, skipping insertion in model container [2018-11-06 21:39:39,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:39:38" (1/1) ... [2018-11-06 21:39:39,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:39:39,128 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:39:40,188 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:39:40,194 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:39:40,595 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:39:40,621 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:39:40,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40 WrapperNode [2018-11-06 21:39:40,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:39:40,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:39:40,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:39:40,623 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:39:40,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (1/1) ... [2018-11-06 21:39:40,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (1/1) ... [2018-11-06 21:39:41,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:39:41,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:39:41,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:39:41,161 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:39:41,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (1/1) ... [2018-11-06 21:39:41,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (1/1) ... [2018-11-06 21:39:41,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (1/1) ... [2018-11-06 21:39:41,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (1/1) ... [2018-11-06 21:39:41,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (1/1) ... [2018-11-06 21:39:41,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (1/1) ... [2018-11-06 21:39:41,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (1/1) ... [2018-11-06 21:39:41,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:39:41,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:39:41,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:39:41,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:39:41,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:39:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:39:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:39:41,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:39:49,630 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:39:49,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:39:49 BoogieIcfgContainer [2018-11-06 21:39:49,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:39:49,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:39:49,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:39:49,636 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:39:49,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:39:38" (1/3) ... [2018-11-06 21:39:49,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2732a974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:39:49, skipping insertion in model container [2018-11-06 21:39:49,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:39:40" (2/3) ... [2018-11-06 21:39:49,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2732a974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:39:49, skipping insertion in model container [2018-11-06 21:39:49,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:39:49" (3/3) ... [2018-11-06 21:39:49,641 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label11_true-unreach-call.c [2018-11-06 21:39:49,652 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:39:49,663 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:39:49,682 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:39:49,724 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:39:49,725 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:39:49,725 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:39:49,725 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:39:49,726 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:39:49,726 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:39:49,726 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:39:49,726 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:39:49,726 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:39:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-11-06 21:39:49,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-06 21:39:49,778 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:39:49,779 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:39:49,781 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:39:49,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:39:49,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1848943538, now seen corresponding path program 1 times [2018-11-06 21:39:49,790 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:39:49,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:39:49,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:39:49,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:39:49,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:39:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:39:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:39:50,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:39:50,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:39:50,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:39:50,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:39:50,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:39:50,293 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-11-06 21:39:59,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:39:59,270 INFO L93 Difference]: Finished difference Result 2099 states and 3904 transitions. [2018-11-06 21:39:59,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:39:59,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-11-06 21:39:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:39:59,311 INFO L225 Difference]: With dead ends: 2099 [2018-11-06 21:39:59,311 INFO L226 Difference]: Without dead ends: 1501 [2018-11-06 21:39:59,320 INFO L604 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 [2018-11-06 21:39:59,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2018-11-06 21:39:59,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1499. [2018-11-06 21:39:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1499 states. [2018-11-06 21:39:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 2373 transitions. [2018-11-06 21:39:59,464 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 2373 transitions. Word has length 57 [2018-11-06 21:39:59,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:39:59,466 INFO L480 AbstractCegarLoop]: Abstraction has 1499 states and 2373 transitions. [2018-11-06 21:39:59,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:39:59,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 2373 transitions. [2018-11-06 21:39:59,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-06 21:39:59,474 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:39:59,474 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:39:59,477 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:39:59,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:39:59,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1939256122, now seen corresponding path program 1 times [2018-11-06 21:39:59,478 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:39:59,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:39:59,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:39:59,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:39:59,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:39:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:39:59,905 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:39:59,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:39:59,906 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:39:59,927 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:40:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:40:00,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:40:00,590 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 21 [2018-11-06 21:40:01,203 WARN L179 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2018-11-06 21:40:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:40:03,730 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:40:03,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-11-06 21:40:03,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:40:03,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:40:03,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:40:03,732 INFO L87 Difference]: Start difference. First operand 1499 states and 2373 transitions. Second operand 8 states. [2018-11-06 21:40:07,742 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-11-06 21:40:28,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:40:28,376 INFO L93 Difference]: Finished difference Result 13769 states and 22993 transitions. [2018-11-06 21:40:28,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-06 21:40:28,381 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2018-11-06 21:40:28,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:40:28,414 INFO L225 Difference]: With dead ends: 13769 [2018-11-06 21:40:28,415 INFO L226 Difference]: Without dead ends: 6169 [2018-11-06 21:40:28,425 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 26 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2018-11-06 21:40:28,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2018-11-06 21:40:28,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 6141. [2018-11-06 21:40:28,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6141 states. [2018-11-06 21:40:28,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6141 states to 6141 states and 7326 transitions. [2018-11-06 21:40:28,546 INFO L78 Accepts]: Start accepts. Automaton has 6141 states and 7326 transitions. Word has length 128 [2018-11-06 21:40:28,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:40:28,547 INFO L480 AbstractCegarLoop]: Abstraction has 6141 states and 7326 transitions. [2018-11-06 21:40:28,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:40:28,547 INFO L276 IsEmpty]: Start isEmpty. Operand 6141 states and 7326 transitions. [2018-11-06 21:40:28,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-06 21:40:28,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:40:28,555 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:40:28,555 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:40:28,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:40:28,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1775134901, now seen corresponding path program 1 times [2018-11-06 21:40:28,556 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:40:28,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:40:28,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:40:28,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:40:28,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:40:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:40:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:40:28,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:40:28,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:40:28,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:40:28,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:40:28,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:40:28,958 INFO L87 Difference]: Start difference. First operand 6141 states and 7326 transitions. Second operand 4 states. [2018-11-06 21:40:32,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:40:32,456 INFO L93 Difference]: Finished difference Result 17393 states and 21253 transitions. [2018-11-06 21:40:32,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:40:32,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 230 [2018-11-06 21:40:32,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:40:32,503 INFO L225 Difference]: With dead ends: 17393 [2018-11-06 21:40:32,503 INFO L226 Difference]: Without dead ends: 11681 [2018-11-06 21:40:32,513 INFO L604 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 [2018-11-06 21:40:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11681 states. [2018-11-06 21:40:32,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11681 to 11681. [2018-11-06 21:40:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11681 states. [2018-11-06 21:40:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11681 states to 11681 states and 13632 transitions. [2018-11-06 21:40:32,728 INFO L78 Accepts]: Start accepts. Automaton has 11681 states and 13632 transitions. Word has length 230 [2018-11-06 21:40:32,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:40:32,729 INFO L480 AbstractCegarLoop]: Abstraction has 11681 states and 13632 transitions. [2018-11-06 21:40:32,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:40:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 11681 states and 13632 transitions. [2018-11-06 21:40:32,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2018-11-06 21:40:32,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:40:32,736 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:40:32,736 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:40:32,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:40:32,737 INFO L82 PathProgramCache]: Analyzing trace with hash -2119976369, now seen corresponding path program 1 times [2018-11-06 21:40:32,737 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:40:32,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:40:32,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:40:32,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:40:32,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:40:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:40:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 254 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-06 21:40:33,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:40:33,648 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:40:33,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:40:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:40:33,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:40:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 254 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-06 21:40:34,031 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:40:34,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-11-06 21:40:34,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:40:34,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:40:34,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:40:34,033 INFO L87 Difference]: Start difference. First operand 11681 states and 13632 transitions. Second operand 9 states. [2018-11-06 21:40:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:40:44,377 INFO L93 Difference]: Finished difference Result 25924 states and 30275 transitions. [2018-11-06 21:40:44,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:40:44,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 320 [2018-11-06 21:40:44,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:40:44,430 INFO L225 Difference]: With dead ends: 25924 [2018-11-06 21:40:44,431 INFO L226 Difference]: Without dead ends: 14245 [2018-11-06 21:40:44,445 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:40:44,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2018-11-06 21:40:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 13813. [2018-11-06 21:40:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13813 states. [2018-11-06 21:40:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13813 states to 13813 states and 15862 transitions. [2018-11-06 21:40:44,808 INFO L78 Accepts]: Start accepts. Automaton has 13813 states and 15862 transitions. Word has length 320 [2018-11-06 21:40:44,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:40:44,808 INFO L480 AbstractCegarLoop]: Abstraction has 13813 states and 15862 transitions. [2018-11-06 21:40:44,808 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 21:40:44,809 INFO L276 IsEmpty]: Start isEmpty. Operand 13813 states and 15862 transitions. [2018-11-06 21:40:44,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-11-06 21:40:44,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:40:44,825 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 21:40:44,826 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:40:44,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:40:44,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1549133499, now seen corresponding path program 1 times [2018-11-06 21:40:44,826 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:40:44,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:40:44,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:40:44,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:40:44,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:40:44,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:40:45,332 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 367 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2018-11-06 21:40:45,333 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:40:45,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 21:40:45,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:40:45,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:40:45,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:40:45,335 INFO L87 Difference]: Start difference. First operand 13813 states and 15862 transitions. Second operand 3 states. [2018-11-06 21:40:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:40:47,479 INFO L93 Difference]: Finished difference Result 26763 states and 30852 transitions. [2018-11-06 21:40:47,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:40:47,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 467 [2018-11-06 21:40:47,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:40:47,513 INFO L225 Difference]: With dead ends: 26763 [2018-11-06 21:40:47,513 INFO L226 Difference]: Without dead ends: 13802 [2018-11-06 21:40:47,528 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:40:47,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13802 states. [2018-11-06 21:40:47,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13802 to 13800. [2018-11-06 21:40:47,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13800 states. [2018-11-06 21:40:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13800 states to 13800 states and 15832 transitions. [2018-11-06 21:40:47,710 INFO L78 Accepts]: Start accepts. Automaton has 13800 states and 15832 transitions. Word has length 467 [2018-11-06 21:40:47,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:40:47,711 INFO L480 AbstractCegarLoop]: Abstraction has 13800 states and 15832 transitions. [2018-11-06 21:40:47,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:40:47,711 INFO L276 IsEmpty]: Start isEmpty. Operand 13800 states and 15832 transitions. [2018-11-06 21:40:47,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2018-11-06 21:40:47,729 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:40:47,729 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:40:47,729 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:40:47,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:40:47,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1509416231, now seen corresponding path program 1 times [2018-11-06 21:40:47,730 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:40:47,730 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:40:47,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:40:47,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:40:47,731 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:40:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:40:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-11-06 21:40:48,149 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:40:48,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:40:48,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:40:48,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:40:48,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:40:48,151 INFO L87 Difference]: Start difference. First operand 13800 states and 15832 transitions. Second operand 3 states. [2018-11-06 21:40:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:40:51,575 INFO L93 Difference]: Finished difference Result 31428 states and 36090 transitions. [2018-11-06 21:40:51,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:40:51,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 469 [2018-11-06 21:40:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:40:51,618 INFO L225 Difference]: With dead ends: 31428 [2018-11-06 21:40:51,619 INFO L226 Difference]: Without dead ends: 18481 [2018-11-06 21:40:51,635 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:40:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18481 states. [2018-11-06 21:40:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18481 to 15049. [2018-11-06 21:40:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15049 states. [2018-11-06 21:40:51,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15049 states to 15049 states and 17161 transitions. [2018-11-06 21:40:51,874 INFO L78 Accepts]: Start accepts. Automaton has 15049 states and 17161 transitions. Word has length 469 [2018-11-06 21:40:51,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:40:51,875 INFO L480 AbstractCegarLoop]: Abstraction has 15049 states and 17161 transitions. [2018-11-06 21:40:51,875 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:40:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 15049 states and 17161 transitions. [2018-11-06 21:40:51,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2018-11-06 21:40:51,891 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:40:51,891 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-06 21:40:51,892 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:40:51,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:40:51,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1796914715, now seen corresponding path program 1 times [2018-11-06 21:40:51,892 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:40:51,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:40:51,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:40:51,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:40:51,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:40:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:40:52,494 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-06 21:40:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 443 proven. 83 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-11-06 21:40:52,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:40:52,826 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:40:52,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:40:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:40:52,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:41:01,401 WARN L179 SmtUtils]: Spent 8.21 s on a formula simplification. DAG size of input: 273 DAG size of output: 37 [2018-11-06 21:41:01,961 INFO L134 CoverageAnalysis]: Checked inductivity of 709 backedges. 457 proven. 146 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-11-06 21:41:01,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:41:01,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-11-06 21:41:01,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 21:41:01,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 21:41:01,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:41:01,984 INFO L87 Difference]: Start difference. First operand 15049 states and 17161 transitions. Second operand 8 states. [2018-11-06 21:41:12,976 WARN L179 SmtUtils]: Spent 8.04 s on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2018-11-06 21:41:17,921 WARN L179 SmtUtils]: Spent 4.01 s on a formula simplification that was a NOOP. DAG size: 41 [2018-11-06 21:43:05,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:43:05,781 INFO L93 Difference]: Finished difference Result 40343 states and 46210 transitions. [2018-11-06 21:43:05,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 21:43:05,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 469 [2018-11-06 21:43:05,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:43:05,830 INFO L225 Difference]: With dead ends: 40343 [2018-11-06 21:43:05,830 INFO L226 Difference]: Without dead ends: 26148 [2018-11-06 21:43:05,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-11-06 21:43:05,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26148 states. [2018-11-06 21:43:06,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26148 to 25704. [2018-11-06 21:43:06,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25704 states. [2018-11-06 21:43:06,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25704 states to 25704 states and 28660 transitions. [2018-11-06 21:43:06,146 INFO L78 Accepts]: Start accepts. Automaton has 25704 states and 28660 transitions. Word has length 469 [2018-11-06 21:43:06,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:43:06,147 INFO L480 AbstractCegarLoop]: Abstraction has 25704 states and 28660 transitions. [2018-11-06 21:43:06,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 21:43:06,147 INFO L276 IsEmpty]: Start isEmpty. Operand 25704 states and 28660 transitions. [2018-11-06 21:43:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 485 [2018-11-06 21:43:06,165 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:43:06,166 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:43:06,166 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:43:06,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:43:06,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1547565823, now seen corresponding path program 1 times [2018-11-06 21:43:06,167 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:43:06,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:43:06,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:06,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:43:06,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:43:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2018-11-06 21:43:07,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:43:07,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:43:07,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:43:07,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:43:07,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:43:07,020 INFO L87 Difference]: Start difference. First operand 25704 states and 28660 transitions. Second operand 3 states. [2018-11-06 21:43:10,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:43:10,002 INFO L93 Difference]: Finished difference Result 56506 states and 63497 transitions. [2018-11-06 21:43:10,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:43:10,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 484 [2018-11-06 21:43:10,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:43:10,044 INFO L225 Difference]: With dead ends: 56506 [2018-11-06 21:43:10,044 INFO L226 Difference]: Without dead ends: 32082 [2018-11-06 21:43:10,060 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:43:10,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32082 states. [2018-11-06 21:43:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32082 to 32079. [2018-11-06 21:43:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32079 states. [2018-11-06 21:43:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32079 states to 32079 states and 34922 transitions. [2018-11-06 21:43:10,423 INFO L78 Accepts]: Start accepts. Automaton has 32079 states and 34922 transitions. Word has length 484 [2018-11-06 21:43:10,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:43:10,424 INFO L480 AbstractCegarLoop]: Abstraction has 32079 states and 34922 transitions. [2018-11-06 21:43:10,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:43:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 32079 states and 34922 transitions. [2018-11-06 21:43:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2018-11-06 21:43:10,438 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:43:10,439 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:43:10,439 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:43:10,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:43:10,440 INFO L82 PathProgramCache]: Analyzing trace with hash 674306240, now seen corresponding path program 1 times [2018-11-06 21:43:10,440 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:43:10,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:43:10,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:10,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:43:10,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:43:10,956 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 551 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2018-11-06 21:43:10,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:43:10,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:43:10,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:43:10,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:43:10,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:43:10,958 INFO L87 Difference]: Start difference. First operand 32079 states and 34922 transitions. Second operand 3 states. [2018-11-06 21:43:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:43:13,517 INFO L93 Difference]: Finished difference Result 63303 states and 69212 transitions. [2018-11-06 21:43:13,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:43:13,521 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 540 [2018-11-06 21:43:13,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:43:13,561 INFO L225 Difference]: With dead ends: 63303 [2018-11-06 21:43:13,561 INFO L226 Difference]: Without dead ends: 32504 [2018-11-06 21:43:13,581 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:43:13,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32504 states. [2018-11-06 21:43:13,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32504 to 32504. [2018-11-06 21:43:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32504 states. [2018-11-06 21:43:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32504 states to 32504 states and 35273 transitions. [2018-11-06 21:43:13,936 INFO L78 Accepts]: Start accepts. Automaton has 32504 states and 35273 transitions. Word has length 540 [2018-11-06 21:43:13,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:43:13,937 INFO L480 AbstractCegarLoop]: Abstraction has 32504 states and 35273 transitions. [2018-11-06 21:43:13,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:43:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 32504 states and 35273 transitions. [2018-11-06 21:43:13,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2018-11-06 21:43:13,952 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:43:13,953 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 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] [2018-11-06 21:43:13,953 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:43:13,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:43:13,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1344862140, now seen corresponding path program 1 times [2018-11-06 21:43:13,954 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:43:13,954 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:43:13,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:13,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:43:13,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:43:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1063 backedges. 545 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2018-11-06 21:43:14,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:43:14,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:43:14,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:43:14,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:43:14,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:43:14,647 INFO L87 Difference]: Start difference. First operand 32504 states and 35273 transitions. Second operand 3 states. [2018-11-06 21:43:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:43:18,397 INFO L93 Difference]: Finished difference Result 76949 states and 84043 transitions. [2018-11-06 21:43:18,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:43:18,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 558 [2018-11-06 21:43:18,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:43:18,452 INFO L225 Difference]: With dead ends: 76949 [2018-11-06 21:43:18,452 INFO L226 Difference]: Without dead ends: 45725 [2018-11-06 21:43:18,472 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:43:18,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45725 states. [2018-11-06 21:43:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45725 to 45287. [2018-11-06 21:43:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45287 states. [2018-11-06 21:43:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45287 states to 45287 states and 49209 transitions. [2018-11-06 21:43:18,861 INFO L78 Accepts]: Start accepts. Automaton has 45287 states and 49209 transitions. Word has length 558 [2018-11-06 21:43:18,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:43:18,862 INFO L480 AbstractCegarLoop]: Abstraction has 45287 states and 49209 transitions. [2018-11-06 21:43:18,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:43:18,862 INFO L276 IsEmpty]: Start isEmpty. Operand 45287 states and 49209 transitions. [2018-11-06 21:43:18,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2018-11-06 21:43:18,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:43:18,881 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2018-11-06 21:43:18,881 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:43:18,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:43:18,882 INFO L82 PathProgramCache]: Analyzing trace with hash -67437568, now seen corresponding path program 1 times [2018-11-06 21:43:18,882 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:43:18,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:43:18,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:18,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:43:18,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:43:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:43:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 510 proven. 435 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-11-06 21:43:19,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:43:19,599 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:43:19,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:43:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:43:19,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:43:21,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 705 proven. 108 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2018-11-06 21:43:21,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:43:21,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2018-11-06 21:43:21,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 21:43:21,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 21:43:21,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-06 21:43:21,205 INFO L87 Difference]: Start difference. First operand 45287 states and 49209 transitions. Second operand 11 states. Received shutdown request... [2018-11-06 21:43:48,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-06 21:43:48,545 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:43:48,550 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:43:48,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:43:48 BoogieIcfgContainer [2018-11-06 21:43:48,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:43:48,552 INFO L168 Benchmark]: Toolchain (without parser) took 249565.74 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 773.0 MB. Max. memory is 7.1 GB. [2018-11-06 21:43:48,553 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. [2018-11-06 21:43:48,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1632.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:43:48,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 538.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -882.5 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:43:48,558 INFO L168 Benchmark]: Boogie Preprocessor took 322.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:43:48,559 INFO L168 Benchmark]: RCFGBuilder took 8148.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 468.4 MB). Peak memory consumption was 468.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:43:48,559 INFO L168 Benchmark]: TraceAbstraction took 238918.58 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 3.1 GB in the end (delta: -1.5 GB). Peak memory consumption was 254.2 MB. Max. memory is 7.1 GB. [2018-11-06 21:43:48,566 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 1632.92 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 538.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -882.5 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 322.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8148.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 468.4 MB). Peak memory consumption was 468.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238918.58 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.6 GB in the beginning and 3.1 GB in the end (delta: -1.5 GB). Peak memory consumption was 254.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 176]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 176). Cancelled while BasicCegarLoop was constructing difference of abstraction (45287states) and FLOYD_HOARE automaton (currently 26 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (40174 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 238.8s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 214.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3627 SDtfs, 28783 SDslu, 2273 SDs, 0 SdLazy, 46404 SolverSat, 7419 SolverUnsat, 42 SolverUnknown, 0 SolverNotchecked, 186.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1587 GetRequests, 1483 SyntacticMatches, 29 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 26.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45287occurred 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: 2.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 4781 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 18.1s InterpolantComputationTime, 5765 NumberOfCodeBlocks, 5765 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 5750 ConstructedInterpolants, 230 QuantifiedInterpolants, 13180244 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1953 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 15 InterpolantComputations, 7 PerfectInterpolantSequences, 7621/8640 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown