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/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:25:02,072 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:25:02,074 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:25:02,093 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:25:02,093 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:25:02,095 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:25:02,096 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:25:02,099 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:25:02,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:25:02,107 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:25:02,108 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:25:02,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:25:02,110 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:25:02,111 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:25:02,112 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:25:02,113 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:25:02,114 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:25:02,116 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:25:02,118 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:25:02,121 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:25:02,122 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:25:02,123 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:25:02,126 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:25:02,136 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:25:02,136 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:25:02,138 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:25:02,138 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:25:02,140 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:25:02,168 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:25:02,168 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:25:02,169 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:25:02,172 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:25:02,172 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:25:02,172 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:25:02,172 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:25:02,173 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:25:02,173 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:25:02,173 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:25:02,173 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:25:02,173 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:25:02,175 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:25:02,175 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:25:02,175 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:25:02,175 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:25:02,175 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:25:02,177 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:25:02,178 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:25:02,178 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:25:02,178 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:25:02,178 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:25:02,178 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:25:02,179 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:25:02,179 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:25:02,179 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:25:02,180 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:25:02,180 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:25:02,180 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:25:02,180 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:25:02,180 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:25:02,181 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:25:02,181 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:25:02,181 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:25:02,235 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:25:02,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:25:02,254 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:25:02,256 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:25:02,256 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:25:02,258 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32_false-unreach-call.c [2018-10-24 18:25:02,316 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d0c6ecee9/341994ec83a545c48e63affe0362a803/FLAG94ae9ad45 [2018-10-24 18:25:03,066 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:25:03,067 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label32_false-unreach-call.c [2018-10-24 18:25:03,115 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d0c6ecee9/341994ec83a545c48e63affe0362a803/FLAG94ae9ad45 [2018-10-24 18:25:03,133 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d0c6ecee9/341994ec83a545c48e63affe0362a803 [2018-10-24 18:25:03,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:25:03,148 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:25:03,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:25:03,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:25:03,153 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:25:03,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:03" (1/1) ... [2018-10-24 18:25:03,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce1be01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:03, skipping insertion in model container [2018-10-24 18:25:03,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:03" (1/1) ... [2018-10-24 18:25:03,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:25:03,363 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:25:04,790 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:04,796 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:25:05,601 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:05,641 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:25:05,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05 WrapperNode [2018-10-24 18:25:05,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:25:05,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:25:05,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:25:05,643 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:25:05,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (1/1) ... [2018-10-24 18:25:05,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (1/1) ... [2018-10-24 18:25:06,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:25:06,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:25:06,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:25:06,227 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:25:06,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (1/1) ... [2018-10-24 18:25:06,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (1/1) ... [2018-10-24 18:25:06,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (1/1) ... [2018-10-24 18:25:06,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (1/1) ... [2018-10-24 18:25:06,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (1/1) ... [2018-10-24 18:25:06,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (1/1) ... [2018-10-24 18:25:06,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (1/1) ... [2018-10-24 18:25:06,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:25:06,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:25:06,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:25:06,604 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:25:06,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (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 18:25:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:25:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:25:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:25:06,675 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:25:06,675 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:25:06,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:25:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:25:06,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:25:06,676 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:25:06,676 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:25:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:25:06,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:25:06,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:25:06,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:25:18,218 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:25:18,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:18 BoogieIcfgContainer [2018-10-24 18:25:18,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:25:18,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:25:18,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:25:18,223 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:25:18,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:25:03" (1/3) ... [2018-10-24 18:25:18,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3334bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:18, skipping insertion in model container [2018-10-24 18:25:18,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:05" (2/3) ... [2018-10-24 18:25:18,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b3334bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:18, skipping insertion in model container [2018-10-24 18:25:18,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:18" (3/3) ... [2018-10-24 18:25:18,227 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label32_false-unreach-call.c [2018-10-24 18:25:18,237 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:25:18,246 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:25:18,264 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:25:18,312 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:25:18,312 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:25:18,313 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:25:18,313 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:25:18,313 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:25:18,313 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:25:18,313 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:25:18,313 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:25:18,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 18:25:18,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-24 18:25:18,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:18,370 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:25:18,372 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:18,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:18,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1656413677, now seen corresponding path program 1 times [2018-10-24 18:25:18,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:18,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:18,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:18,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:18,435 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:18,780 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:25:18,887 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 18:25:18,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:18,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:25:18,892 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:18,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:25:18,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:25:18,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:25:18,924 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 18:25:29,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:29,358 INFO L93 Difference]: Finished difference Result 3093 states and 5715 transitions. [2018-10-24 18:25:29,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:25:29,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-24 18:25:29,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:29,395 INFO L225 Difference]: With dead ends: 3093 [2018-10-24 18:25:29,395 INFO L226 Difference]: Without dead ends: 1971 [2018-10-24 18:25:29,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:25:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2018-10-24 18:25:29,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1957. [2018-10-24 18:25:29,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-10-24 18:25:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3535 transitions. [2018-10-24 18:25:29,568 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3535 transitions. Word has length 15 [2018-10-24 18:25:29,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:29,569 INFO L481 AbstractCegarLoop]: Abstraction has 1957 states and 3535 transitions. [2018-10-24 18:25:29,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:25:29,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3535 transitions. [2018-10-24 18:25:29,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 18:25:29,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:29,574 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:25:29,575 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:29,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:29,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1180844236, now seen corresponding path program 1 times [2018-10-24 18:25:29,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:29,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:29,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:29,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:29,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:30,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:30,247 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:25:30,248 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:30,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:25:30,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:25:30,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:25:30,250 INFO L87 Difference]: Start difference. First operand 1957 states and 3535 transitions. Second operand 6 states. [2018-10-24 18:25:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:43,831 INFO L93 Difference]: Finished difference Result 5627 states and 10356 transitions. [2018-10-24 18:25:43,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:25:43,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2018-10-24 18:25:43,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:43,859 INFO L225 Difference]: With dead ends: 5627 [2018-10-24 18:25:43,859 INFO L226 Difference]: Without dead ends: 3676 [2018-10-24 18:25:43,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:25:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2018-10-24 18:25:43,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3643. [2018-10-24 18:25:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3643 states. [2018-10-24 18:25:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 5987 transitions. [2018-10-24 18:25:43,982 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 5987 transitions. Word has length 98 [2018-10-24 18:25:43,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:43,983 INFO L481 AbstractCegarLoop]: Abstraction has 3643 states and 5987 transitions. [2018-10-24 18:25:43,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:25:43,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 5987 transitions. [2018-10-24 18:25:43,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 18:25:43,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:43,993 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:25:43,993 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:43,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:43,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1396028292, now seen corresponding path program 1 times [2018-10-24 18:25:43,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:43,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:43,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:43,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:43,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:44,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:44,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:25:44,278 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:44,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:25:44,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:25:44,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:25:44,280 INFO L87 Difference]: Start difference. First operand 3643 states and 5987 transitions. Second operand 5 states. [2018-10-24 18:26:01,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:01,439 INFO L93 Difference]: Finished difference Result 10957 states and 18516 transitions. [2018-10-24 18:26:01,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:26:01,441 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-10-24 18:26:01,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:01,482 INFO L225 Difference]: With dead ends: 10957 [2018-10-24 18:26:01,482 INFO L226 Difference]: Without dead ends: 7320 [2018-10-24 18:26:01,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:26:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7320 states. [2018-10-24 18:26:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7320 to 7131. [2018-10-24 18:26:01,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7131 states. [2018-10-24 18:26:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7131 states to 7131 states and 10923 transitions. [2018-10-24 18:26:01,689 INFO L78 Accepts]: Start accepts. Automaton has 7131 states and 10923 transitions. Word has length 114 [2018-10-24 18:26:01,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:01,690 INFO L481 AbstractCegarLoop]: Abstraction has 7131 states and 10923 transitions. [2018-10-24 18:26:01,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:26:01,690 INFO L276 IsEmpty]: Start isEmpty. Operand 7131 states and 10923 transitions. [2018-10-24 18:26:01,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 18:26:01,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:01,694 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:26:01,695 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:01,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:01,695 INFO L82 PathProgramCache]: Analyzing trace with hash -696567544, now seen corresponding path program 1 times [2018-10-24 18:26:01,695 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:01,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:01,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:01,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:01,697 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:02,007 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:26:02,202 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:02,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:02,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:26:02,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:02,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:26:02,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:26:02,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:26:02,204 INFO L87 Difference]: Start difference. First operand 7131 states and 10923 transitions. Second operand 6 states. [2018-10-24 18:26:14,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:14,742 INFO L93 Difference]: Finished difference Result 19766 states and 31245 transitions. [2018-10-24 18:26:14,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:26:14,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-24 18:26:14,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:14,817 INFO L225 Difference]: With dead ends: 19766 [2018-10-24 18:26:14,817 INFO L226 Difference]: Without dead ends: 12641 [2018-10-24 18:26:14,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:26:14,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12641 states. [2018-10-24 18:26:15,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12641 to 12439. [2018-10-24 18:26:15,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12439 states. [2018-10-24 18:26:15,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12439 states to 12439 states and 18019 transitions. [2018-10-24 18:26:15,192 INFO L78 Accepts]: Start accepts. Automaton has 12439 states and 18019 transitions. Word has length 151 [2018-10-24 18:26:15,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:15,193 INFO L481 AbstractCegarLoop]: Abstraction has 12439 states and 18019 transitions. [2018-10-24 18:26:15,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:26:15,193 INFO L276 IsEmpty]: Start isEmpty. Operand 12439 states and 18019 transitions. [2018-10-24 18:26:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-24 18:26:15,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:15,196 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:26:15,197 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:15,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:15,197 INFO L82 PathProgramCache]: Analyzing trace with hash 220658057, now seen corresponding path program 1 times [2018-10-24 18:26:15,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:15,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:15,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:15,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:15,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:15,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:15,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:26:15,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:26:15,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:15,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:26:15,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:26:15,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:26:15,772 INFO L87 Difference]: Start difference. First operand 12439 states and 18019 transitions. Second operand 6 states. [2018-10-24 18:26:35,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:35,776 INFO L93 Difference]: Finished difference Result 42949 states and 69054 transitions. [2018-10-24 18:26:35,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:26:35,779 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2018-10-24 18:26:35,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:35,932 INFO L225 Difference]: With dead ends: 42949 [2018-10-24 18:26:35,933 INFO L226 Difference]: Without dead ends: 30516 [2018-10-24 18:26:36,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:26:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30516 states. [2018-10-24 18:26:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30516 to 30278. [2018-10-24 18:26:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30278 states. [2018-10-24 18:26:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30278 states to 30278 states and 43651 transitions. [2018-10-24 18:26:37,271 INFO L78 Accepts]: Start accepts. Automaton has 30278 states and 43651 transitions. Word has length 173 [2018-10-24 18:26:37,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:37,271 INFO L481 AbstractCegarLoop]: Abstraction has 30278 states and 43651 transitions. [2018-10-24 18:26:37,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:26:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 30278 states and 43651 transitions. [2018-10-24 18:26:37,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-10-24 18:26:37,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:37,280 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:26:37,280 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:37,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:37,281 INFO L82 PathProgramCache]: Analyzing trace with hash -356666551, now seen corresponding path program 1 times [2018-10-24 18:26:37,281 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:37,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:37,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:37,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:37,283 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:26:37,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:26:37,809 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:26:37,811 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-10-24 18:26:37,816 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2647], [2649], [2652], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3171], [3176], [3178], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 18:26:37,906 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:26:37,906 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:26:44,035 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:26:44,036 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:26:44,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:44,064 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:26:48,081 INFO L232 lantSequenceWeakener]: Weakened 194 states. On average, predicates are now at 71.03% of their original sizes. [2018-10-24 18:26:48,081 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:26:49,780 INFO L413 sIntCurrentIteration]: We have 218 unified AI predicates [2018-10-24 18:26:49,781 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:26:49,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:26:49,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 18:26:49,782 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:49,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 18:26:49,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 18:26:49,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 18:26:49,783 INFO L87 Difference]: Start difference. First operand 30278 states and 43651 transitions. Second operand 11 states. [2018-10-24 18:27:23,114 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:28:40,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:28:40,663 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:28:40,668 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:28:40,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:28:40 BoogieIcfgContainer [2018-10-24 18:28:40,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:28:40,670 INFO L168 Benchmark]: Toolchain (without parser) took 217522.99 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -503.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 18:28:40,674 INFO L168 Benchmark]: CDTParser took 0.25 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 18:28:40,674 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2493.22 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: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:40,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 583.98 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 823.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:40,676 INFO L168 Benchmark]: Boogie Preprocessor took 376.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:40,677 INFO L168 Benchmark]: RCFGBuilder took 11615.42 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 174.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 34.8 MB). Peak memory consumption was 653.9 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:40,678 INFO L168 Benchmark]: TraceAbstraction took 202449.32 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 18:28:40,684 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2493.22 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: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 583.98 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 823.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 376.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11615.42 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 174.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 34.8 MB). Peak memory consumption was 653.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 202449.32 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 256.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while BasicCegarLoop was constructing difference of abstraction (30278states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (5545 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 202.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 185.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2372 SDtfs, 19996 SDslu, 2626 SDs, 0 SdLazy, 27480 SolverSat, 7305 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 134.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 267 GetRequests, 221 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30278occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9959209597741707 AbsIntWeakeningRatio, 0.15137614678899083 AbsIntAvgWeakeningVarsNumRemoved, 47.972477064220186 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 676 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 770 NumberOfCodeBlocks, 770 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 764 ConstructedInterpolants, 0 QuantifiedInterpolants, 574495 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 127/129 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown