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/Problem02_label39_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:26:22,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:26:22,049 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:26:22,066 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:26:22,067 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:26:22,068 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:26:22,069 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:26:22,071 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:26:22,072 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:26:22,073 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:26:22,074 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:26:22,074 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:26:22,075 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:26:22,076 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:26:22,077 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:26:22,078 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:26:22,082 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:26:22,084 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:26:22,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:26:22,093 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:26:22,094 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:26:22,097 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:26:22,099 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:26:22,117 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 [2018-10-23 23:26:22,146 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:26:22,146 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:26:22,147 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:26:22,147 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:26:22,150 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:26:22,150 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:26:22,150 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:26:22,150 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:26:22,151 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:26:22,151 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:26:22,151 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:26:22,151 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:26:22,152 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:26:22,152 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:26:22,152 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:26:22,153 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:26:22,154 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:26:22,154 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:26:22,154 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:26:22,154 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:26:22,155 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:26:22,155 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:26:22,155 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:26:22,155 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:26:22,156 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:26:22,156 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:26:22,156 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:26:22,157 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:26:22,157 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:26:22,157 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:26:22,157 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:26:22,157 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:26:22,158 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:26:22,158 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:26:22,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:26:22,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:26:22,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:26:22,248 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:26:22,249 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:26:22,249 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label39_true-unreach-call_false-termination.c [2018-10-23 23:26:22,310 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e677abeec/ccff4f802c714ebaa0fd479c8d4a3282/FLAG1d72eb7f2 [2018-10-23 23:26:22,835 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:26:22,836 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label39_true-unreach-call_false-termination.c [2018-10-23 23:26:22,854 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e677abeec/ccff4f802c714ebaa0fd479c8d4a3282/FLAG1d72eb7f2 [2018-10-23 23:26:22,874 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e677abeec/ccff4f802c714ebaa0fd479c8d4a3282 [2018-10-23 23:26:22,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:26:22,888 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:26:22,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:26:22,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:26:22,894 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:26:22,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:26:22" (1/1) ... [2018-10-23 23:26:22,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d88a655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:22, skipping insertion in model container [2018-10-23 23:26:22,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:26:22" (1/1) ... [2018-10-23 23:26:22,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:26:22,986 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:26:23,463 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:26:23,468 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:26:23,568 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:26:23,587 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:26:23,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23 WrapperNode [2018-10-23 23:26:23,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:26:23,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:26:23,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:26:23,590 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:26:23,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (1/1) ... [2018-10-23 23:26:23,621 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (1/1) ... [2018-10-23 23:26:23,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:26:23,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:26:23,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:26:23,806 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:26:23,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (1/1) ... [2018-10-23 23:26:23,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (1/1) ... [2018-10-23 23:26:23,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (1/1) ... [2018-10-23 23:26:23,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (1/1) ... [2018-10-23 23:26:23,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (1/1) ... [2018-10-23 23:26:23,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (1/1) ... [2018-10-23 23:26:23,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (1/1) ... [2018-10-23 23:26:23,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:26:23,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:26:23,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:26:23,869 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:26:23,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:26:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:26:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:26:23,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:26:23,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:26:23,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:26:23,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:26:23,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:26:23,970 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:26:27,131 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:26:27,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:26:27 BoogieIcfgContainer [2018-10-23 23:26:27,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:26:27,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:26:27,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:26:27,143 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:26:27,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:26:22" (1/3) ... [2018-10-23 23:26:27,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441d7d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:26:27, skipping insertion in model container [2018-10-23 23:26:27,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:26:23" (2/3) ... [2018-10-23 23:26:27,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@441d7d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:26:27, skipping insertion in model container [2018-10-23 23:26:27,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:26:27" (3/3) ... [2018-10-23 23:26:27,149 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label39_true-unreach-call_false-termination.c [2018-10-23 23:26:27,160 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:26:27,173 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:26:27,192 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:26:27,234 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:26:27,234 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:26:27,235 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:26:27,235 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:26:27,235 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:26:27,235 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:26:27,235 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:26:27,235 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:26:27,264 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:26:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-23 23:26:27,278 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:27,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:26:27,282 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:27,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:27,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1592268880, now seen corresponding path program 1 times [2018-10-23 23:26:27,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:27,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:27,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:27,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:27,340 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:27,949 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:26:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:26:28,106 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:26:28,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:26:28,107 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:28,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:26:28,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:26:28,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:26:28,139 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:26:29,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:29,903 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-23 23:26:29,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:26:29,906 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2018-10-23 23:26:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:29,926 INFO L225 Difference]: With dead ends: 621 [2018-10-23 23:26:29,926 INFO L226 Difference]: Without dead ends: 382 [2018-10-23 23:26:29,933 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 [2018-10-23 23:26:29,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-23 23:26:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-23 23:26:30,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-23 23:26:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-23 23:26:30,027 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 118 [2018-10-23 23:26:30,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:30,028 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-23 23:26:30,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:26:30,029 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-23 23:26:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-23 23:26:30,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:30,038 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:26:30,038 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:30,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:30,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1462652163, now seen corresponding path program 1 times [2018-10-23 23:26:30,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:30,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:30,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:30,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:30,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:30,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:26:30,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:26:30,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:26:30,461 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:30,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:26:30,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:26:30,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:26:30,464 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 5 states. [2018-10-23 23:26:31,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:31,944 INFO L93 Difference]: Finished difference Result 903 states and 1497 transitions. [2018-10-23 23:26:31,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:26:31,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-10-23 23:26:31,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:31,951 INFO L225 Difference]: With dead ends: 903 [2018-10-23 23:26:31,951 INFO L226 Difference]: Without dead ends: 381 [2018-10-23 23:26:31,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:26:31,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-10-23 23:26:31,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-10-23 23:26:31,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-10-23 23:26:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 602 transitions. [2018-10-23 23:26:31,986 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 602 transitions. Word has length 127 [2018-10-23 23:26:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:31,987 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 602 transitions. [2018-10-23 23:26:31,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:26:31,987 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 602 transitions. [2018-10-23 23:26:31,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-23 23:26:31,992 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:31,993 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:26:31,993 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:31,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:31,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1825296655, now seen corresponding path program 1 times [2018-10-23 23:26:31,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:31,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:31,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:31,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:31,995 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:32,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:32,438 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2018-10-23 23:26:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:26:32,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:26:32,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:26:32,577 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:32,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:26:32,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:26:32,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:26:32,578 INFO L87 Difference]: Start difference. First operand 381 states and 602 transitions. Second operand 5 states. [2018-10-23 23:26:34,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:34,427 INFO L93 Difference]: Finished difference Result 901 states and 1482 transitions. [2018-10-23 23:26:34,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:26:34,430 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-10-23 23:26:34,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:34,434 INFO L225 Difference]: With dead ends: 901 [2018-10-23 23:26:34,434 INFO L226 Difference]: Without dead ends: 380 [2018-10-23 23:26:34,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:26:34,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-10-23 23:26:34,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-10-23 23:26:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-23 23:26:34,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 594 transitions. [2018-10-23 23:26:34,457 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 594 transitions. Word has length 133 [2018-10-23 23:26:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:34,458 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 594 transitions. [2018-10-23 23:26:34,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:26:34,458 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 594 transitions. [2018-10-23 23:26:34,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-23 23:26:34,460 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:34,461 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:26:34,461 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:34,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:34,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1056401542, now seen corresponding path program 1 times [2018-10-23 23:26:34,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:34,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:34,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:34,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:34,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:34,657 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:26:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:26:34,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:26:34,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:26:34,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:34,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:26:34,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:26:34,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:26:34,692 INFO L87 Difference]: Start difference. First operand 380 states and 594 transitions. Second operand 6 states. [2018-10-23 23:26:38,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:38,930 INFO L93 Difference]: Finished difference Result 1193 states and 1942 transitions. [2018-10-23 23:26:38,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:26:38,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-23 23:26:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:38,936 INFO L225 Difference]: With dead ends: 1193 [2018-10-23 23:26:38,936 INFO L226 Difference]: Without dead ends: 819 [2018-10-23 23:26:38,939 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:26:38,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-10-23 23:26:38,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 807. [2018-10-23 23:26:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-10-23 23:26:38,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1208 transitions. [2018-10-23 23:26:38,981 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1208 transitions. Word has length 141 [2018-10-23 23:26:38,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:38,982 INFO L481 AbstractCegarLoop]: Abstraction has 807 states and 1208 transitions. [2018-10-23 23:26:38,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:26:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1208 transitions. [2018-10-23 23:26:38,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-23 23:26:38,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:38,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:26:38,986 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:38,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:38,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2142875510, now seen corresponding path program 1 times [2018-10-23 23:26:38,987 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:38,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:38,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:38,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:38,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:39,464 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-23 23:26:39,714 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-23 23:26:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:26:39,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:26:39,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:26:39,798 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:39,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:26:39,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:26:39,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:26:39,799 INFO L87 Difference]: Start difference. First operand 807 states and 1208 transitions. Second operand 5 states. [2018-10-23 23:26:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:41,204 INFO L93 Difference]: Finished difference Result 1753 states and 2669 transitions. [2018-10-23 23:26:41,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:26:41,205 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-10-23 23:26:41,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:41,212 INFO L225 Difference]: With dead ends: 1753 [2018-10-23 23:26:41,213 INFO L226 Difference]: Without dead ends: 804 [2018-10-23 23:26:41,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:26:41,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2018-10-23 23:26:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 804. [2018-10-23 23:26:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2018-10-23 23:26:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1190 transitions. [2018-10-23 23:26:41,248 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1190 transitions. Word has length 143 [2018-10-23 23:26:41,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:41,249 INFO L481 AbstractCegarLoop]: Abstraction has 804 states and 1190 transitions. [2018-10-23 23:26:41,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:26:41,249 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1190 transitions. [2018-10-23 23:26:41,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-23 23:26:41,252 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:41,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:26:41,253 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:41,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:41,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1822889842, now seen corresponding path program 1 times [2018-10-23 23:26:41,253 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:41,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:41,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:41,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:41,255 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:41,651 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 23:26:41,898 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 23:26:41,961 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:26:41,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:26:41,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:26:41,962 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:41,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:26:41,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:26:41,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:26:41,963 INFO L87 Difference]: Start difference. First operand 804 states and 1190 transitions. Second operand 5 states. [2018-10-23 23:26:43,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:43,466 INFO L93 Difference]: Finished difference Result 1747 states and 2630 transitions. [2018-10-23 23:26:43,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:26:43,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-23 23:26:43,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:43,475 INFO L225 Difference]: With dead ends: 1747 [2018-10-23 23:26:43,475 INFO L226 Difference]: Without dead ends: 801 [2018-10-23 23:26:43,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:26:43,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2018-10-23 23:26:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 801. [2018-10-23 23:26:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2018-10-23 23:26:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1169 transitions. [2018-10-23 23:26:43,516 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1169 transitions. Word has length 145 [2018-10-23 23:26:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:43,516 INFO L481 AbstractCegarLoop]: Abstraction has 801 states and 1169 transitions. [2018-10-23 23:26:43,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:26:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1169 transitions. [2018-10-23 23:26:43,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-23 23:26:43,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:43,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:26:43,522 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:43,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:43,523 INFO L82 PathProgramCache]: Analyzing trace with hash 2129057642, now seen corresponding path program 1 times [2018-10-23 23:26:43,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:43,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:43,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:43,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:43,530 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:43,763 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:26:44,146 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:26:44,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:26:44,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:26:44,146 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:26:44,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:26:44,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:26:44,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:26:44,149 INFO L87 Difference]: Start difference. First operand 801 states and 1169 transitions. Second operand 6 states. [2018-10-23 23:26:45,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:45,264 INFO L93 Difference]: Finished difference Result 2381 states and 3621 transitions. [2018-10-23 23:26:45,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:26:45,271 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-23 23:26:45,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:45,282 INFO L225 Difference]: With dead ends: 2381 [2018-10-23 23:26:45,282 INFO L226 Difference]: Without dead ends: 1586 [2018-10-23 23:26:45,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:26:45,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2018-10-23 23:26:45,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1558. [2018-10-23 23:26:45,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2018-10-23 23:26:45,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2225 transitions. [2018-10-23 23:26:45,333 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2225 transitions. Word has length 149 [2018-10-23 23:26:45,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:45,334 INFO L481 AbstractCegarLoop]: Abstraction has 1558 states and 2225 transitions. [2018-10-23 23:26:45,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:26:45,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2225 transitions. [2018-10-23 23:26:45,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-23 23:26:45,340 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:45,341 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, 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] [2018-10-23 23:26:45,341 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:45,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:45,341 INFO L82 PathProgramCache]: Analyzing trace with hash -702189192, now seen corresponding path program 1 times [2018-10-23 23:26:45,342 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:45,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:45,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:45,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:45,343 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:45,494 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:26:45,494 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:26:45,494 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:26:45,495 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 185 with the following transitions: [2018-10-23 23:26:45,497 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [107], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [615], [617], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:26:45,563 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:26:45,563 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:27:13,752 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:27:13,754 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-23 23:27:13,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:27:13,766 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:27:21,224 INFO L232 lantSequenceWeakener]: Weakened 46 states. On average, predicates are now at 82.67% of their original sizes. [2018-10-23 23:27:21,224 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:28:35,939 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:28:35,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:28:35,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-23 23:28:35,941 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:28:35,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-23 23:28:35,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-23 23:28:35,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2018-10-23 23:28:35,943 INFO L87 Difference]: Start difference. First operand 1558 states and 2225 transitions. Second operand 22 states. Received shutdown request... [2018-10-23 23:30:34,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-23 23:30:34,690 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:30:34,695 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:30:34,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:30:34 BoogieIcfgContainer [2018-10-23 23:30:34,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:30:34,696 INFO L168 Benchmark]: Toolchain (without parser) took 251808.99 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 526.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:30:34,698 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:30:34,698 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:30:34,699 INFO L168 Benchmark]: Boogie Procedure Inliner took 216.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -815.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:30:34,700 INFO L168 Benchmark]: Boogie Preprocessor took 62.54 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:30:34,701 INFO L168 Benchmark]: RCFGBuilder took 3263.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 120.4 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:30:34,701 INFO L168 Benchmark]: TraceAbstraction took 247559.63 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -621.4 MB). Peak memory consumption was 449.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:30:34,707 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 699.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 216.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -815.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.54 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3263.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 120.4 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 247559.63 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -621.4 MB). Peak memory consumption was 449.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 505]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 505). Cancelled while BasicCegarLoop was constructing difference of abstraction (1558states) and FLOYD_HOARE automaton (currently 23 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (628 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 247.4s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 132.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 912 SDtfs, 4502 SDslu, 729 SDs, 0 SdLazy, 5646 SolverSat, 1123 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 245 GetRequests, 174 SyntacticMatches, 17 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 80.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1558occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 28.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9949397197024465 AbsIntWeakeningRatio, 0.18032786885245902 AbsIntAvgWeakeningVarsNumRemoved, 405.25136612021856 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1140 NumberOfCodeBlocks, 1140 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1132 ConstructedInterpolants, 0 QuantifiedInterpolants, 1153311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 201/203 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown