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_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:07:31,878 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:07:31,881 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:07:31,894 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:07:31,895 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:07:31,896 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:07:31,897 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:07:31,899 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:07:31,901 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:07:31,902 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:07:31,902 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:07:31,903 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:07:31,904 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:07:31,905 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:07:31,906 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:07:31,907 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:07:31,907 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:07:31,909 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:07:31,911 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:07:31,913 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:07:31,914 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:07:31,915 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:07:31,918 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:07:31,927 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 22:07:31,943 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:07:31,944 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:07:31,945 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:07:31,945 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:07:31,946 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:07:31,946 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:07:31,946 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:07:31,946 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:07:31,947 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:07:31,947 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:07:31,947 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:07:31,947 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:07:31,948 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:07:31,948 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:07:31,948 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:07:31,948 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:07:31,949 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:07:31,950 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:07:31,950 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:07:31,950 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:07:31,950 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:07:31,951 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:07:31,951 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:07:31,951 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:07:31,951 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:07:31,951 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:07:31,952 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:07:31,952 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:07:31,952 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:07:31,953 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:07:31,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:07:31,953 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:07:31,953 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:07:31,953 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:07:32,011 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:07:32,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:07:32,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:07:32,036 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:07:32,036 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:07:32,037 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c [2018-10-24 22:07:32,107 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/829088f43/c3a512a65e0f476b83984d712f53fee7/FLAGd9fe8b5b9 [2018-10-24 22:07:32,799 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:07:32,800 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c [2018-10-24 22:07:32,831 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/829088f43/c3a512a65e0f476b83984d712f53fee7/FLAGd9fe8b5b9 [2018-10-24 22:07:32,849 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/829088f43/c3a512a65e0f476b83984d712f53fee7 [2018-10-24 22:07:32,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:07:32,863 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:07:32,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:07:32,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:07:32,872 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:07:32,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:07:32" (1/1) ... [2018-10-24 22:07:32,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ee3c633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:32, skipping insertion in model container [2018-10-24 22:07:32,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:07:32" (1/1) ... [2018-10-24 22:07:32,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:07:33,013 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:07:34,121 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:07:34,126 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:07:34,521 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:07:34,548 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:07:34,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34 WrapperNode [2018-10-24 22:07:34,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:07:34,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:07:34,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:07:34,550 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:07:34,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (1/1) ... [2018-10-24 22:07:34,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (1/1) ... [2018-10-24 22:07:35,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:07:35,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:07:35,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:07:35,072 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:07:35,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (1/1) ... [2018-10-24 22:07:35,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (1/1) ... [2018-10-24 22:07:35,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (1/1) ... [2018-10-24 22:07:35,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (1/1) ... [2018-10-24 22:07:35,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (1/1) ... [2018-10-24 22:07:35,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (1/1) ... [2018-10-24 22:07:35,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (1/1) ... [2018-10-24 22:07:35,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:07:35,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:07:35,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:07:35,393 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:07:35,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (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 22:07:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:07:35,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:07:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:07:35,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:07:35,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:07:35,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:07:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:07:35,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:07:35,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:07:35,472 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:07:48,437 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:07:48,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:07:48 BoogieIcfgContainer [2018-10-24 22:07:48,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:07:48,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:07:48,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:07:48,444 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:07:48,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:07:32" (1/3) ... [2018-10-24 22:07:48,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15baa5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:07:48, skipping insertion in model container [2018-10-24 22:07:48,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:34" (2/3) ... [2018-10-24 22:07:48,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15baa5de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:07:48, skipping insertion in model container [2018-10-24 22:07:48,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:07:48" (3/3) ... [2018-10-24 22:07:48,449 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label15_true-unreach-call.c [2018-10-24 22:07:48,460 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:07:48,474 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:07:48,495 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:07:48,558 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:07:48,559 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:07:48,559 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:07:48,559 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:07:48,559 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:07:48,559 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:07:48,560 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:07:48,560 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:07:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:07:48,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 22:07:48,614 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:07:48,615 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] [2018-10-24 22:07:48,618 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:07:48,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:07:48,626 INFO L82 PathProgramCache]: Analyzing trace with hash 2012982790, now seen corresponding path program 1 times [2018-10-24 22:07:48,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:07:48,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:07:48,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:07:48,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:07:48,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:07:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:07:49,170 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 22:07:49,192 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 22:07:49,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:07:49,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:07:49,196 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:07:49,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:07:49,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:07:49,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:07:49,225 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:07:58,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:07:58,293 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-24 22:07:58,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:07:58,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-10-24 22:07:58,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:07:58,336 INFO L225 Difference]: With dead ends: 2164 [2018-10-24 22:07:58,336 INFO L226 Difference]: Without dead ends: 1554 [2018-10-24 22:07:58,357 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 22:07:58,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-24 22:07:58,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-24 22:07:58,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-24 22:07:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-24 22:07:58,544 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 43 [2018-10-24 22:07:58,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:07:58,545 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-24 22:07:58,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:07:58,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-24 22:07:58,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 22:07:58,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:07:58,560 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:07:58,561 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:07:58,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:07:58,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1160890231, now seen corresponding path program 1 times [2018-10-24 22:07:58,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:07:58,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:07:58,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:07:58,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:07:58,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:07:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:07:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:07:58,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:07:58,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:07:58,910 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:07:58,912 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:07:58,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:07:58,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:07:58,913 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-24 22:08:09,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:08:09,154 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-24 22:08:09,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:08:09,154 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2018-10-24 22:08:09,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:08:09,170 INFO L225 Difference]: With dead ends: 3031 [2018-10-24 22:08:09,170 INFO L226 Difference]: Without dead ends: 1985 [2018-10-24 22:08:09,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:08:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-24 22:08:09,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-24 22:08:09,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-24 22:08:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-24 22:08:09,248 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 115 [2018-10-24 22:08:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:08:09,249 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-24 22:08:09,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:08:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-24 22:08:09,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 22:08:09,258 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:08:09,259 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:09,259 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:08:09,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:08:09,259 INFO L82 PathProgramCache]: Analyzing trace with hash -2146986351, now seen corresponding path program 1 times [2018-10-24 22:08:09,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:08:09,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:08:09,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:08:09,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:08:09,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:08:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:08:09,819 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:08:09,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:08:09,820 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:08:09,821 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 119 with the following transitions: [2018-10-24 22:08:09,824 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], [934], [942], [950], [954], [956], [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 22:08:09,924 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:08:09,925 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:08:11,364 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:08:30,553 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:08:30,555 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 22:08:30,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:08:30,575 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:08:30,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:08:30,576 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 22:08:30,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:08:30,590 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:08:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:08:30,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:08:37,076 WARN L179 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 42 [2018-10-24 22:08:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:08:37,164 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:08:39,512 WARN L179 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 39 DAG size of output: 13 [2018-10-24 22:08:40,114 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-10-24 22:08:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:08:40,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 22:08:40,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-24 22:08:40,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:08:40,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:08:40,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:08:40,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-24 22:08:40,566 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-10-24 22:09:19,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:09:19,801 INFO L93 Difference]: Finished difference Result 7523 states and 12906 transitions. [2018-10-24 22:09:19,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:09:19,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-10-24 22:09:19,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:09:19,841 INFO L225 Difference]: With dead ends: 7523 [2018-10-24 22:09:19,841 INFO L226 Difference]: Without dead ends: 5570 [2018-10-24 22:09:19,858 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-24 22:09:19,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2018-10-24 22:09:20,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5564. [2018-10-24 22:09:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5564 states. [2018-10-24 22:09:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 8722 transitions. [2018-10-24 22:09:20,066 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 8722 transitions. Word has length 118 [2018-10-24 22:09:20,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:09:20,066 INFO L481 AbstractCegarLoop]: Abstraction has 5564 states and 8722 transitions. [2018-10-24 22:09:20,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:09:20,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 8722 transitions. [2018-10-24 22:09:20,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 22:09:20,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:09:20,071 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:20,072 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:09:20,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:20,072 INFO L82 PathProgramCache]: Analyzing trace with hash -785829609, now seen corresponding path program 1 times [2018-10-24 22:09:20,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:09:20,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:20,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:20,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:20,074 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:09:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:20,357 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:09:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:09:20,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:09:20,908 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:09:20,908 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-10-24 22:09:20,908 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], [934], [942], [950], [954], [956], [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], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:09:20,917 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:09:20,920 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:09:22,355 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:09:32,879 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:09:32,880 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 22:09:32,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:32,915 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:09:32,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:09:32,916 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 22:09:32,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:32,931 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:09:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:33,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:09:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:09:33,174 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:09:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:09:33,559 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:09:33,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-24 22:09:33,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:09:33,560 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:09:33,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:09:33,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:09:33,561 INFO L87 Difference]: Start difference. First operand 5564 states and 8722 transitions. Second operand 3 states. [2018-10-24 22:09:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:09:39,128 INFO L93 Difference]: Finished difference Result 13747 states and 21533 transitions. [2018-10-24 22:09:39,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:09:39,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2018-10-24 22:09:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:09:39,173 INFO L225 Difference]: With dead ends: 13747 [2018-10-24 22:09:39,173 INFO L226 Difference]: Without dead ends: 8189 [2018-10-24 22:09:39,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 261 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:09:39,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8189 states. [2018-10-24 22:09:39,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8189 to 8188. [2018-10-24 22:09:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8188 states. [2018-10-24 22:09:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8188 states to 8188 states and 12083 transitions. [2018-10-24 22:09:39,435 INFO L78 Accepts]: Start accepts. Automaton has 8188 states and 12083 transitions. Word has length 131 [2018-10-24 22:09:39,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:09:39,436 INFO L481 AbstractCegarLoop]: Abstraction has 8188 states and 12083 transitions. [2018-10-24 22:09:39,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:09:39,436 INFO L276 IsEmpty]: Start isEmpty. Operand 8188 states and 12083 transitions. [2018-10-24 22:09:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-24 22:09:39,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:09:39,440 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:39,441 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:09:39,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1575860037, now seen corresponding path program 1 times [2018-10-24 22:09:39,441 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:09:39,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:39,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:39,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:39,442 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:09:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:09:39,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:09:39,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:09:39,777 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:09:39,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:09:39,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:09:39,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:09:39,779 INFO L87 Difference]: Start difference. First operand 8188 states and 12083 transitions. Second operand 5 states. [2018-10-24 22:09:53,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:09:53,077 INFO L93 Difference]: Finished difference Result 25889 states and 40221 transitions. [2018-10-24 22:09:53,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:09:53,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-10-24 22:09:53,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:09:53,173 INFO L225 Difference]: With dead ends: 25889 [2018-10-24 22:09:53,173 INFO L226 Difference]: Without dead ends: 17707 [2018-10-24 22:09:53,217 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:09:53,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17707 states. [2018-10-24 22:09:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17707 to 17590. [2018-10-24 22:09:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17590 states. [2018-10-24 22:09:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17590 states to 17590 states and 24424 transitions. [2018-10-24 22:09:53,766 INFO L78 Accepts]: Start accepts. Automaton has 17590 states and 24424 transitions. Word has length 133 [2018-10-24 22:09:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:09:53,766 INFO L481 AbstractCegarLoop]: Abstraction has 17590 states and 24424 transitions. [2018-10-24 22:09:53,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:09:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 17590 states and 24424 transitions. [2018-10-24 22:09:53,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-10-24 22:09:53,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:09:53,780 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 22:09:53,780 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:09:53,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:53,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1752060658, now seen corresponding path program 1 times [2018-10-24 22:09:53,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:09:53,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:53,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:53,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:53,789 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:09:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:54,070 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:09:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 73 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 22:09:54,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:09:54,513 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:09:54,513 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-10-24 22:09:54,513 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], [934], [942], [950], [954], [956], [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], [1235], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:09:54,523 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:09:54,524 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:09:55,498 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:10:12,163 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 22:10:12,164 INFO L272 AbstractInterpreter]: Visited 87 different actions 572 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 22:10:12,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:10:12,173 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 22:10:12,173 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:10:12,173 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:10:12,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:10:12,182 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 22:10:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:10:12,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:10:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:10:12,401 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 22:10:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:10:12,576 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 22:10:12,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 22:10:12,577 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 22:10:12,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 22:10:12,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 22:10:12,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-24 22:10:12,578 INFO L87 Difference]: Start difference. First operand 17590 states and 24424 transitions. Second operand 9 states. [2018-10-24 22:10:20,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:10:20,922 INFO L93 Difference]: Finished difference Result 35256 states and 49264 transitions. [2018-10-24 22:10:20,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 22:10:20,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2018-10-24 22:10:20,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:10:20,982 INFO L225 Difference]: With dead ends: 35256 [2018-10-24 22:10:20,982 INFO L226 Difference]: Without dead ends: 15029 [2018-10-24 22:10:21,042 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 390 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-24 22:10:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15029 states. [2018-10-24 22:10:21,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15029 to 14557. [2018-10-24 22:10:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14557 states. [2018-10-24 22:10:21,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14557 states to 14557 states and 17112 transitions. [2018-10-24 22:10:21,369 INFO L78 Accepts]: Start accepts. Automaton has 14557 states and 17112 transitions. Word has length 196 [2018-10-24 22:10:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:10:21,370 INFO L481 AbstractCegarLoop]: Abstraction has 14557 states and 17112 transitions. [2018-10-24 22:10:21,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 22:10:21,370 INFO L276 IsEmpty]: Start isEmpty. Operand 14557 states and 17112 transitions. [2018-10-24 22:10:21,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2018-10-24 22:10:21,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:10:21,381 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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 22:10:21,381 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:10:21,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:10:21,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1622705209, now seen corresponding path program 1 times [2018-10-24 22:10:21,382 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:10:21,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:10:21,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:10:21,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:10:21,384 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:10:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:10:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 118 proven. 142 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-10-24 22:10:22,100 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:10:22,100 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:10:22,101 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 283 with the following transitions: [2018-10-24 22:10:22,101 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], [934], [942], [950], [954], [956], [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], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:10:22,106 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:10:22,106 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:10:23,019 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 22:11:21,283 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 22:11:21,284 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 22:11:21,284 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 22:11:21,284 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:11:21,284 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-24 22:11:21,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:11:21,294 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:11:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:11:21,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 22:11:21,384 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 22:11:21,585 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 22:11:21,585 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:11:21,590 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:11:21,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:11:21 BoogieIcfgContainer [2018-10-24 22:11:21,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:11:21,591 INFO L168 Benchmark]: Toolchain (without parser) took 228729.68 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -962.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 22:11:21,593 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 22:11:21,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1684.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:11:21,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 522.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:11:21,598 INFO L168 Benchmark]: Boogie Preprocessor took 320.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:11:21,599 INFO L168 Benchmark]: RCFGBuilder took 13046.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 466.9 MB). Peak memory consumption was 466.9 MB. Max. memory is 7.1 GB. [2018-10-24 22:11:21,599 INFO L168 Benchmark]: TraceAbstraction took 213150.39 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -673.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 22:11:21,606 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1684.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 522.09 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -935.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 320.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.7 MB). Peak memory consumption was 42.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13046.92 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 466.9 MB). Peak memory consumption was 466.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213150.39 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.4 GB in the end (delta: -673.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 116). Cancelled while BasicCegarLoop was analyzing trace of length 283 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 213.0s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 86.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1951 SDtfs, 11577 SDslu, 1451 SDs, 0 SdLazy, 16290 SolverSat, 5250 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 78.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 948 GetRequests, 891 SyntacticMatches, 10 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17590occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 109.6s AbstIntTime, 4 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 1124 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.4s InterpolantComputationTime, 1181 NumberOfCodeBlocks, 1181 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1614 ConstructedInterpolants, 80 QuantifiedInterpolants, 930155 SizeOfPredicates, 6 NumberOfNonLiveVariables, 941 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 644/729 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown