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/Problem17_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:02:06,947 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:02:06,954 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:02:06,973 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:02:06,973 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:02:06,977 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:02:06,978 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:02:06,980 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:02:06,982 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:02:06,992 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:02:06,992 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:02:06,993 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:02:06,994 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:02:06,995 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:02:06,997 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:02:06,998 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:02:06,998 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:02:07,000 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:02:07,002 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:02:07,003 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:02:07,004 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:02:07,005 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:02:07,007 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:02:07,015 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 02:02:07,030 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:02:07,033 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:02:07,034 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:02:07,034 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:02:07,034 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:02:07,034 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:02:07,035 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:02:07,035 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:02:07,035 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:02:07,035 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:02:07,035 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:02:07,036 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:02:07,036 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:02:07,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:02:07,037 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:02:07,037 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:02:07,037 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:02:07,037 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:02:07,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:02:07,038 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:02:07,038 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:02:07,038 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:02:07,038 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:02:07,038 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:02:07,039 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:02:07,039 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:02:07,039 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:02:07,039 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:02:07,039 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:02:07,039 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:02:07,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:02:07,040 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:02:07,040 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:02:07,040 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:02:07,083 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:02:07,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:02:07,099 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:02:07,101 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:02:07,101 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:02:07,102 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label12_true-unreach-call.c [2018-10-24 02:02:07,160 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d6c44d7c/66e6ad8214454b60938aca6cc61c7163/FLAGca5c26a4b [2018-10-24 02:02:07,820 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:02:07,822 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label12_true-unreach-call.c [2018-10-24 02:02:07,847 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d6c44d7c/66e6ad8214454b60938aca6cc61c7163/FLAGca5c26a4b [2018-10-24 02:02:07,869 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d6c44d7c/66e6ad8214454b60938aca6cc61c7163 [2018-10-24 02:02:07,880 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:02:07,882 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:02:07,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:02:07,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:02:07,889 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:02:07,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:02:07" (1/1) ... [2018-10-24 02:02:07,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0b4b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:07, skipping insertion in model container [2018-10-24 02:02:07,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:02:07" (1/1) ... [2018-10-24 02:02:07,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:02:08,040 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:02:09,132 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:02:09,137 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:02:09,536 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:02:09,561 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:02:09,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09 WrapperNode [2018-10-24 02:02:09,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:02:09,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:02:09,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:02:09,563 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:02:09,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (1/1) ... [2018-10-24 02:02:09,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (1/1) ... [2018-10-24 02:02:10,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:02:10,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:02:10,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:02:10,005 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:02:10,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (1/1) ... [2018-10-24 02:02:10,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (1/1) ... [2018-10-24 02:02:10,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (1/1) ... [2018-10-24 02:02:10,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (1/1) ... [2018-10-24 02:02:10,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (1/1) ... [2018-10-24 02:02:10,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (1/1) ... [2018-10-24 02:02:10,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (1/1) ... [2018-10-24 02:02:10,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:02:10,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:02:10,233 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:02:10,233 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:02:10,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (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 02:02:10,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:02:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:02:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:02:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:02:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:02:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:02:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:02:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:02:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:02:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:02:22,325 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:02:22,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:02:22 BoogieIcfgContainer [2018-10-24 02:02:22,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:02:22,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:02:22,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:02:22,340 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:02:22,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:02:07" (1/3) ... [2018-10-24 02:02:22,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6bc9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:02:22, skipping insertion in model container [2018-10-24 02:02:22,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:02:09" (2/3) ... [2018-10-24 02:02:22,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6bc9a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:02:22, skipping insertion in model container [2018-10-24 02:02:22,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:02:22" (3/3) ... [2018-10-24 02:02:22,345 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label12_true-unreach-call.c [2018-10-24 02:02:22,357 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:02:22,375 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:02:22,393 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:02:22,451 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:02:22,451 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:02:22,452 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:02:22,452 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:02:22,452 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:02:22,452 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:02:22,452 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:02:22,452 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:02:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 02:02:22,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-24 02:02:22,511 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:02:22,512 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] [2018-10-24 02:02:22,514 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:02:22,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:02:22,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1805373012, now seen corresponding path program 1 times [2018-10-24 02:02:22,523 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:02:22,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:02:22,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:02:22,568 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:02:22,568 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:02:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:02:23,026 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-10-24 02:02:23,038 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 02:02:23,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:02:23,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:02:23,041 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:02:23,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:02:23,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:02:23,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:02:23,066 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 02:02:35,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:02:35,846 INFO L93 Difference]: Finished difference Result 2139 states and 3961 transitions. [2018-10-24 02:02:35,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:02:35,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-10-24 02:02:35,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:02:35,880 INFO L225 Difference]: With dead ends: 2139 [2018-10-24 02:02:35,880 INFO L226 Difference]: Without dead ends: 1529 [2018-10-24 02:02:35,890 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:02:35,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2018-10-24 02:02:36,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2018-10-24 02:02:36,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1527 states. [2018-10-24 02:02:36,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2413 transitions. [2018-10-24 02:02:36,053 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2413 transitions. Word has length 40 [2018-10-24 02:02:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:02:36,055 INFO L481 AbstractCegarLoop]: Abstraction has 1527 states and 2413 transitions. [2018-10-24 02:02:36,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 02:02:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2413 transitions. [2018-10-24 02:02:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 02:02:36,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:02:36,068 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:02:36,069 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:02:36,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:02:36,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2053053534, now seen corresponding path program 1 times [2018-10-24 02:02:36,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:02:36,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:02:36,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:02:36,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:02:36,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:02:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:02:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:02:36,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:02:36,688 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:02:36,689 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 116 with the following transitions: [2018-10-24 02:02:36,691 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [930], [932], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 02:02:36,760 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:02:36,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:02:38,305 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:02:59,795 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 02:02:59,796 INFO L272 AbstractInterpreter]: Visited 83 different actions 544 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 02:02:59,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:02:59,850 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 02:02:59,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:02:59,851 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 02:02:59,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:02:59,865 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 02:02:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:02:59,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 02:03:26,697 WARN L179 SmtUtils]: Spent 24.26 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 02:03:46,912 WARN L179 SmtUtils]: Spent 16.10 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 02:03:47,263 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:03:47,263 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 02:03:47,870 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-10-24 02:03:52,112 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 02:03:52,206 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 02:03:54,834 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 02:03:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:03:55,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 02:03:55,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-24 02:03:55,148 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:03:55,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:03:55,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:03:55,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-10-24 02:03:55,150 INFO L87 Difference]: Start difference. First operand 1527 states and 2413 transitions. Second operand 6 states. [2018-10-24 02:05:10,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:05:10,985 INFO L93 Difference]: Finished difference Result 5754 states and 9371 transitions. [2018-10-24 02:05:10,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 02:05:10,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-24 02:05:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:05:11,023 INFO L225 Difference]: With dead ends: 5754 [2018-10-24 02:05:11,023 INFO L226 Difference]: Without dead ends: 4233 [2018-10-24 02:05:11,034 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 54.5s TimeCoverageRelationStatistics Valid=45, Invalid=161, Unknown=4, NotChecked=0, Total=210 [2018-10-24 02:05:11,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2018-10-24 02:05:11,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 4198. [2018-10-24 02:05:11,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4198 states. [2018-10-24 02:05:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4198 states to 4198 states and 6438 transitions. [2018-10-24 02:05:11,193 INFO L78 Accepts]: Start accepts. Automaton has 4198 states and 6438 transitions. Word has length 115 [2018-10-24 02:05:11,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:05:11,194 INFO L481 AbstractCegarLoop]: Abstraction has 4198 states and 6438 transitions. [2018-10-24 02:05:11,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:05:11,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4198 states and 6438 transitions. [2018-10-24 02:05:11,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 02:05:11,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:05:11,215 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:11,215 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:05:11,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:05:11,216 INFO L82 PathProgramCache]: Analyzing trace with hash -2103782277, now seen corresponding path program 1 times [2018-10-24 02:05:11,216 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:05:11,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:11,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:05:11,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:11,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:05:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:05:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:05:11,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:05:11,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:05:11,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:05:11,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:05:11,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:05:11,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:05:11,540 INFO L87 Difference]: Start difference. First operand 4198 states and 6438 transitions. Second operand 6 states. [2018-10-24 02:05:17,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:05:17,859 INFO L93 Difference]: Finished difference Result 12530 states and 20208 transitions. [2018-10-24 02:05:17,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:05:17,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-24 02:05:17,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:05:17,919 INFO L225 Difference]: With dead ends: 12530 [2018-10-24 02:05:17,919 INFO L226 Difference]: Without dead ends: 8338 [2018-10-24 02:05:17,942 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 [2018-10-24 02:05:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8338 states. [2018-10-24 02:05:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8338 to 8281. [2018-10-24 02:05:18,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8281 states. [2018-10-24 02:05:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8281 states to 8281 states and 12247 transitions. [2018-10-24 02:05:18,212 INFO L78 Accepts]: Start accepts. Automaton has 8281 states and 12247 transitions. Word has length 156 [2018-10-24 02:05:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:05:18,213 INFO L481 AbstractCegarLoop]: Abstraction has 8281 states and 12247 transitions. [2018-10-24 02:05:18,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:05:18,214 INFO L276 IsEmpty]: Start isEmpty. Operand 8281 states and 12247 transitions. [2018-10-24 02:05:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 02:05:18,220 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:05:18,221 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:05:18,222 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:05:18,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:05:18,223 INFO L82 PathProgramCache]: Analyzing trace with hash 877086327, now seen corresponding path program 1 times [2018-10-24 02:05:18,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:05:18,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:18,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:05:18,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:18,226 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:05:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:05:18,569 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:05:18,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:05:18,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 02:05:18,570 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:05:18,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:05:18,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:05:18,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:05:18,571 INFO L87 Difference]: Start difference. First operand 8281 states and 12247 transitions. Second operand 7 states. [2018-10-24 02:05:42,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:05:42,612 INFO L93 Difference]: Finished difference Result 24813 states and 43588 transitions. [2018-10-24 02:05:42,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 02:05:42,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2018-10-24 02:05:42,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:05:42,799 INFO L225 Difference]: With dead ends: 24813 [2018-10-24 02:05:42,799 INFO L226 Difference]: Without dead ends: 16538 [2018-10-24 02:05:42,887 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 02:05:42,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16538 states. [2018-10-24 02:05:43,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16538 to 16248. [2018-10-24 02:05:43,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16248 states. [2018-10-24 02:05:43,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16248 states to 16248 states and 25872 transitions. [2018-10-24 02:05:43,510 INFO L78 Accepts]: Start accepts. Automaton has 16248 states and 25872 transitions. Word has length 174 [2018-10-24 02:05:43,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:05:43,510 INFO L481 AbstractCegarLoop]: Abstraction has 16248 states and 25872 transitions. [2018-10-24 02:05:43,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 02:05:43,511 INFO L276 IsEmpty]: Start isEmpty. Operand 16248 states and 25872 transitions. [2018-10-24 02:05:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-24 02:05:43,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:05:43,520 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 02:05:43,520 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:05:43,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:05:43,521 INFO L82 PathProgramCache]: Analyzing trace with hash 669508885, now seen corresponding path program 1 times [2018-10-24 02:05:43,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:05:43,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:43,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:05:43,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:05:43,522 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:05:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:05:43,827 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:05:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 67 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 02:05:44,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:05:44,303 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:05:44,304 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-10-24 02:05:44,304 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [930], [932], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1262], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 02:05:44,318 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:05:44,318 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:05:45,541 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:06:09,378 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 02:06:09,378 INFO L272 AbstractInterpreter]: Visited 92 different actions 607 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 02:06:09,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:06:09,387 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 02:06:09,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:06:09,387 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 02:06:09,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:06:09,396 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 02:06:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:06:09,477 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 02:06:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:06:09,642 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 02:06:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:06:09,894 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 02:06:09,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 02:06:09,895 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 02:06:09,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 02:06:09,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 02:06:09,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-24 02:06:09,896 INFO L87 Difference]: Start difference. First operand 16248 states and 25872 transitions. Second operand 9 states. Received shutdown request... [2018-10-24 02:06:15,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 02:06:15,371 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:06:15,376 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:06:15,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:06:15 BoogieIcfgContainer [2018-10-24 02:06:15,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:06:15,378 INFO L168 Benchmark]: Toolchain (without parser) took 247497.11 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 02:06:15,379 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:06:15,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1678.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:06:15,381 INFO L168 Benchmark]: Boogie Procedure Inliner took 442.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:06:15,382 INFO L168 Benchmark]: Boogie Preprocessor took 227.22 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: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2018-10-24 02:06:15,383 INFO L168 Benchmark]: RCFGBuilder took 12099.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 461.6 MB). Peak memory consumption was 461.6 MB. Max. memory is 7.1 GB. [2018-10-24 02:06:15,383 INFO L168 Benchmark]: TraceAbstraction took 233043.71 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -848.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 02:06:15,389 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1678.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 442.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -917.2 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 227.22 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: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12099.76 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 461.6 MB). Peak memory consumption was 461.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233043.71 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -848.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 107). Cancelled while BasicCegarLoop was constructing difference of abstraction (16248states) and FLOYD_HOARE automaton (currently 12 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (17465 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 232.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 124.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1287 SDtfs, 10361 SDslu, 1452 SDs, 0 SdLazy, 16339 SolverSat, 4893 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 118.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 678 GetRequests, 627 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 55.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16248occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 48.2s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 384 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 57.6s InterpolantComputationTime, 996 NumberOfCodeBlocks, 996 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1300 ConstructedInterpolants, 114 QuantifiedInterpolants, 1679654 SizeOfPredicates, 4 NumberOfNonLiveVariables, 659 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 515/588 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown