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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label51_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 02:02:51,725 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 02:02:51,727 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 02:02:51,739 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 02:02:51,739 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 02:02:51,740 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 02:02:51,742 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 02:02:51,743 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 02:02:51,745 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 02:02:51,746 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 02:02:51,747 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 02:02:51,747 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 02:02:51,748 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 02:02:51,749 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 02:02:51,750 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 02:02:51,751 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 02:02:51,752 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 02:02:51,754 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 02:02:51,756 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 02:02:51,758 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 02:02:51,759 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 02:02:51,760 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 02:02:51,762 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-25 02:02:51,772 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 02:02:51,797 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 02:02:51,797 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 02:02:51,799 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 02:02:51,799 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 02:02:51,799 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 02:02:51,800 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 02:02:51,800 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 02:02:51,800 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 02:02:51,800 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 02:02:51,800 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 02:02:51,800 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 02:02:51,801 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 02:02:51,804 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 02:02:51,804 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 02:02:51,805 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 02:02:51,805 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 02:02:51,805 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 02:02:51,805 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 02:02:51,806 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 02:02:51,807 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 02:02:51,807 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 02:02:51,807 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 02:02:51,807 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 02:02:51,807 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 02:02:51,808 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 02:02:51,808 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 02:02:51,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 02:02:51,808 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 02:02:51,808 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 02:02:51,809 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 02:02:51,809 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 02:02:51,810 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 02:02:51,810 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 02:02:51,810 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 02:02:51,810 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 02:02:51,810 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 02:02:51,871 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 02:02:51,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 02:02:51,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 02:02:51,894 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 02:02:51,895 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 02:02:51,896 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label51_true-unreach-call.c [2018-10-25 02:02:51,969 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a36189fe0/3873d0b3a13d462c9e12857ba0c77a56/FLAG9cad83a1b [2018-10-25 02:02:52,773 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 02:02:52,774 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label51_true-unreach-call.c [2018-10-25 02:02:52,808 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a36189fe0/3873d0b3a13d462c9e12857ba0c77a56/FLAG9cad83a1b [2018-10-25 02:02:52,828 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a36189fe0/3873d0b3a13d462c9e12857ba0c77a56 [2018-10-25 02:02:52,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 02:02:52,843 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 02:02:52,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 02:02:52,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 02:02:52,849 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 02:02:52,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:02:52" (1/1) ... [2018-10-25 02:02:52,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:52, skipping insertion in model container [2018-10-25 02:02:52,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 02:02:52" (1/1) ... [2018-10-25 02:02:52,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 02:02:52,974 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 02:02:53,940 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:02:53,945 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 02:02:54,356 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 02:02:54,382 INFO L193 MainTranslator]: Completed translation [2018-10-25 02:02:54,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54 WrapperNode [2018-10-25 02:02:54,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 02:02:54,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 02:02:54,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 02:02:54,385 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 02:02:54,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (1/1) ... [2018-10-25 02:02:54,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (1/1) ... [2018-10-25 02:02:54,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 02:02:54,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 02:02:54,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 02:02:54,943 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 02:02:54,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (1/1) ... [2018-10-25 02:02:54,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (1/1) ... [2018-10-25 02:02:54,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (1/1) ... [2018-10-25 02:02:54,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (1/1) ... [2018-10-25 02:02:55,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (1/1) ... [2018-10-25 02:02:55,151 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (1/1) ... [2018-10-25 02:02:55,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (1/1) ... [2018-10-25 02:02:55,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 02:02:55,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 02:02:55,307 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 02:02:55,307 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 02:02:55,308 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (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 [2018-10-25 02:02:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 02:02:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 02:02:55,394 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-25 02:02:55,394 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-25 02:02:55,395 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 02:02:55,395 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 02:02:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 02:02:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 02:02:55,396 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 02:02:55,396 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 02:03:07,215 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 02:03:07,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:03:07 BoogieIcfgContainer [2018-10-25 02:03:07,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 02:03:07,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 02:03:07,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 02:03:07,225 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 02:03:07,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 02:02:52" (1/3) ... [2018-10-25 02:03:07,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52eb0f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:03:07, skipping insertion in model container [2018-10-25 02:03:07,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 02:02:54" (2/3) ... [2018-10-25 02:03:07,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52eb0f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 02:03:07, skipping insertion in model container [2018-10-25 02:03:07,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 02:03:07" (3/3) ... [2018-10-25 02:03:07,230 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label51_true-unreach-call.c [2018-10-25 02:03:07,240 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 02:03:07,252 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 02:03:07,272 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 02:03:07,323 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 02:03:07,323 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 02:03:07,323 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 02:03:07,324 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 02:03:07,324 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 02:03:07,324 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 02:03:07,324 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 02:03:07,324 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 02:03:07,364 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-25 02:03:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-25 02:03:07,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:03:07,374 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:03:07,376 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:03:07,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:03:07,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2022037956, now seen corresponding path program 1 times [2018-10-25 02:03:07,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:03:07,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:07,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:03:07,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:07,436 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:03:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:03:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:07,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:03:07,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:03:07,941 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:03:07,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:03:07,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:03:07,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:03:07,972 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-25 02:03:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:03:18,473 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-10-25 02:03:18,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:03:18,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-10-25 02:03:18,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:03:18,520 INFO L225 Difference]: With dead ends: 2164 [2018-10-25 02:03:18,521 INFO L226 Difference]: Without dead ends: 1554 [2018-10-25 02:03:18,539 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 [2018-10-25 02:03:18,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-10-25 02:03:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-10-25 02:03:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-10-25 02:03:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-10-25 02:03:18,723 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 44 [2018-10-25 02:03:18,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:03:18,723 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-10-25 02:03:18,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:03:18,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-10-25 02:03:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-25 02:03:18,735 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:03:18,737 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:03:18,738 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:03:18,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:03:18,739 INFO L82 PathProgramCache]: Analyzing trace with hash 760811562, now seen corresponding path program 1 times [2018-10-25 02:03:18,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:03:18,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:18,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:03:18,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:18,742 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:03:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:03:19,091 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:03:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:19,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:03:19,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-25 02:03:19,299 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:03:19,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-25 02:03:19,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-25 02:03:19,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-25 02:03:19,302 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-10-25 02:03:27,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:03:27,120 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-10-25 02:03:27,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 02:03:27,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-10-25 02:03:27,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:03:27,136 INFO L225 Difference]: With dead ends: 3031 [2018-10-25 02:03:27,136 INFO L226 Difference]: Without dead ends: 1985 [2018-10-25 02:03:27,141 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:03:27,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-10-25 02:03:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-10-25 02:03:27,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-25 02:03:27,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-10-25 02:03:27,232 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 116 [2018-10-25 02:03:27,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:03:27,233 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-10-25 02:03:27,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-25 02:03:27,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-10-25 02:03:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-25 02:03:27,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:03:27,245 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:03:27,245 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:03:27,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:03:27,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1743388018, now seen corresponding path program 1 times [2018-10-25 02:03:27,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:03:27,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:27,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:03:27,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:27,249 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:03:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:03:27,996 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:27,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:03:27,997 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:03:27,998 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 120 with the following transitions: [2018-10-25 02:03:28,000 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], [958], [962], [964], [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] [2018-10-25 02:03:28,051 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:03:28,051 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:03:29,846 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:03:29,848 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:03:29,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:03:29,890 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:03:29,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:03:29,890 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 [2018-10-25 02:03:29,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:03:29,910 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:03:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:03:29,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:03:30,845 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-10-25 02:03:31,133 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:31,133 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:03:32,388 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:32,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:03:32,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-10-25 02:03:32,422 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:03:32,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:03:32,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:03:32,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-25 02:03:32,426 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-10-25 02:03:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:03:55,147 INFO L93 Difference]: Finished difference Result 7518 states and 12893 transitions. [2018-10-25 02:03:55,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:03:55,148 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 119 [2018-10-25 02:03:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:03:55,190 INFO L225 Difference]: With dead ends: 7518 [2018-10-25 02:03:55,190 INFO L226 Difference]: Without dead ends: 5565 [2018-10-25 02:03:55,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-10-25 02:03:55,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5565 states. [2018-10-25 02:03:55,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5565 to 5555. [2018-10-25 02:03:55,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5555 states. [2018-10-25 02:03:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5555 states to 5555 states and 9340 transitions. [2018-10-25 02:03:55,389 INFO L78 Accepts]: Start accepts. Automaton has 5555 states and 9340 transitions. Word has length 119 [2018-10-25 02:03:55,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:03:55,390 INFO L481 AbstractCegarLoop]: Abstraction has 5555 states and 9340 transitions. [2018-10-25 02:03:55,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:03:55,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5555 states and 9340 transitions. [2018-10-25 02:03:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-25 02:03:55,398 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:03:55,398 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:03:55,399 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:03:55,399 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:03:55,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1915585398, now seen corresponding path program 1 times [2018-10-25 02:03:55,399 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:03:55,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:55,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:03:55,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:03:55,400 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:03:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:03:55,723 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:03:56,392 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:56,392 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:03:56,392 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:03:56,393 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 133 with the following transitions: [2018-10-25 02:03:56,393 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], [958], [962], [964], [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] [2018-10-25 02:03:56,398 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:03:56,398 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:03:56,713 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:03:56,714 INFO L272 AbstractInterpreter]: Visited 96 different actions 185 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:03:56,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:03:56,751 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:03:56,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:03:56,752 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 [2018-10-25 02:03:56,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:03:56,766 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:03:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:03:56,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:03:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:57,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:03:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:03:57,359 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:03:57,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-10-25 02:03:57,359 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:03:57,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:03:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:03:57,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:03:57,361 INFO L87 Difference]: Start difference. First operand 5555 states and 9340 transitions. Second operand 3 states. [2018-10-25 02:04:02,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:02,818 INFO L93 Difference]: Finished difference Result 13726 states and 22953 transitions. [2018-10-25 02:04:02,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:04:02,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 132 [2018-10-25 02:04:02,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:02,867 INFO L225 Difference]: With dead ends: 13726 [2018-10-25 02:04:02,867 INFO L226 Difference]: Without dead ends: 8177 [2018-10-25 02:04:02,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 263 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-25 02:04:02,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8177 states. [2018-10-25 02:04:03,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8177 to 8176. [2018-10-25 02:04:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8176 states. [2018-10-25 02:04:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8176 states to 8176 states and 12764 transitions. [2018-10-25 02:04:03,132 INFO L78 Accepts]: Start accepts. Automaton has 8176 states and 12764 transitions. Word has length 132 [2018-10-25 02:04:03,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:03,133 INFO L481 AbstractCegarLoop]: Abstraction has 8176 states and 12764 transitions. [2018-10-25 02:04:03,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:04:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 8176 states and 12764 transitions. [2018-10-25 02:04:03,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-25 02:04:03,142 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:03,143 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:04:03,143 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:03,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:03,143 INFO L82 PathProgramCache]: Analyzing trace with hash 806945292, now seen corresponding path program 1 times [2018-10-25 02:04:03,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:03,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:03,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:03,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:03,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:03,441 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-25 02:04:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 75 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-25 02:04:03,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:03,501 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:04:03,501 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-25 02:04:03,502 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], [958], [962], [964], [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], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:04:03,507 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:04:03,507 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:04:04,728 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:04:04,729 INFO L272 AbstractInterpreter]: Visited 107 different actions 307 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:04:04,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:04,755 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:04:04,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:04,756 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 [2018-10-25 02:04:04,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:04,769 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:04:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:04,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:04:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:04,999 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:04:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:05,305 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:04:05,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-25 02:04:05,306 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:04:05,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 02:04:05,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 02:04:05,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-10-25 02:04:05,308 INFO L87 Difference]: Start difference. First operand 8176 states and 12764 transitions. Second operand 9 states. [2018-10-25 02:04:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:14,700 INFO L93 Difference]: Finished difference Result 16005 states and 25151 transitions. [2018-10-25 02:04:14,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 02:04:14,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 217 [2018-10-25 02:04:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:14,743 INFO L225 Difference]: With dead ends: 16005 [2018-10-25 02:04:14,743 INFO L226 Difference]: Without dead ends: 6865 [2018-10-25 02:04:14,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 432 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-10-25 02:04:14,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6865 states. [2018-10-25 02:04:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6865 to 6832. [2018-10-25 02:04:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-10-25 02:04:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 8194 transitions. [2018-10-25 02:04:14,933 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 8194 transitions. Word has length 217 [2018-10-25 02:04:14,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:14,933 INFO L481 AbstractCegarLoop]: Abstraction has 6832 states and 8194 transitions. [2018-10-25 02:04:14,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 02:04:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 8194 transitions. [2018-10-25 02:04:14,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-10-25 02:04:14,941 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:14,941 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:04:14,942 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:14,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:14,942 INFO L82 PathProgramCache]: Analyzing trace with hash 559446539, now seen corresponding path program 1 times [2018-10-25 02:04:14,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:14,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:14,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:14,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:14,944 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-25 02:04:15,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:04:15,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-25 02:04:15,210 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:04:15,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:04:15,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:04:15,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:04:15,212 INFO L87 Difference]: Start difference. First operand 6832 states and 8194 transitions. Second operand 3 states. [2018-10-25 02:04:18,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:18,653 INFO L93 Difference]: Finished difference Result 19846 states and 24169 transitions. [2018-10-25 02:04:18,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:04:18,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 298 [2018-10-25 02:04:18,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:18,695 INFO L225 Difference]: With dead ends: 19846 [2018-10-25 02:04:18,695 INFO L226 Difference]: Without dead ends: 11250 [2018-10-25 02:04:18,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-25 02:04:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11250 states. [2018-10-25 02:04:18,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11250 to 11247. [2018-10-25 02:04:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11247 states. [2018-10-25 02:04:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11247 states to 11247 states and 13170 transitions. [2018-10-25 02:04:18,935 INFO L78 Accepts]: Start accepts. Automaton has 11247 states and 13170 transitions. Word has length 298 [2018-10-25 02:04:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:18,936 INFO L481 AbstractCegarLoop]: Abstraction has 11247 states and 13170 transitions. [2018-10-25 02:04:18,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:04:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 11247 states and 13170 transitions. [2018-10-25 02:04:18,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-10-25 02:04:18,949 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:18,950 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:04:18,950 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:18,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:18,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1770846151, now seen corresponding path program 1 times [2018-10-25 02:04:18,951 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:18,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:18,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:18,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:18,952 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:19,651 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:19,652 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:04:19,652 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 393 with the following transitions: [2018-10-25 02:04:19,653 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [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], [958], [962], [964], [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], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:04:19,664 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:04:19,664 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:04:20,785 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:04:20,786 INFO L272 AbstractInterpreter]: Visited 356 different actions 1054 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-25 02:04:20,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:20,832 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:04:20,832 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:20,833 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:04:20,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:20,849 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:04:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:20,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:04:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:21,359 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:04:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 02:04:22,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:04:22,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-10-25 02:04:22,328 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:04:22,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 02:04:22,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 02:04:22,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-25 02:04:22,329 INFO L87 Difference]: Start difference. First operand 11247 states and 13170 transitions. Second operand 6 states. [2018-10-25 02:04:29,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:29,046 INFO L93 Difference]: Finished difference Result 24254 states and 28412 transitions. [2018-10-25 02:04:29,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 02:04:29,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 392 [2018-10-25 02:04:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:29,088 INFO L225 Difference]: With dead ends: 24254 [2018-10-25 02:04:29,089 INFO L226 Difference]: Without dead ends: 12574 [2018-10-25 02:04:29,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 783 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-10-25 02:04:29,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12574 states. [2018-10-25 02:04:29,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12574 to 12130. [2018-10-25 02:04:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12130 states. [2018-10-25 02:04:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12130 states to 12130 states and 14206 transitions. [2018-10-25 02:04:29,339 INFO L78 Accepts]: Start accepts. Automaton has 12130 states and 14206 transitions. Word has length 392 [2018-10-25 02:04:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:29,339 INFO L481 AbstractCegarLoop]: Abstraction has 12130 states and 14206 transitions. [2018-10-25 02:04:29,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 02:04:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 12130 states and 14206 transitions. [2018-10-25 02:04:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 490 [2018-10-25 02:04:29,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:29,364 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-25 02:04:29,364 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:29,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:29,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1546186328, now seen corresponding path program 1 times [2018-10-25 02:04:29,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:29,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:29,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:29,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:29,367 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:30,214 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 422 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-25 02:04:30,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:30,215 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:04:30,215 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 490 with the following transitions: [2018-10-25 02:04:30,215 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], [958], [962], [964], [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], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1329], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1723], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:04:30,222 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:04:30,222 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:04:31,602 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:04:31,602 INFO L272 AbstractInterpreter]: Visited 186 different actions 567 times. Merged at 9 different actions 34 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 4 different actions. Largest state had 26 variables. [2018-10-25 02:04:31,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:31,640 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:04:31,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:31,641 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:04:31,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:31,655 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:04:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:31,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:04:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 422 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-25 02:04:32,101 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:04:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 422 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-10-25 02:04:33,208 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:04:33,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-10-25 02:04:33,208 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:04:33,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-25 02:04:33,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-25 02:04:33,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-25 02:04:33,210 INFO L87 Difference]: Start difference. First operand 12130 states and 14206 transitions. Second operand 7 states. [2018-10-25 02:04:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:04:45,178 INFO L93 Difference]: Finished difference Result 34156 states and 41415 transitions. [2018-10-25 02:04:45,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-25 02:04:45,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 489 [2018-10-25 02:04:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:04:45,245 INFO L225 Difference]: With dead ends: 34156 [2018-10-25 02:04:45,245 INFO L226 Difference]: Without dead ends: 21589 [2018-10-25 02:04:45,270 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 981 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-10-25 02:04:45,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21589 states. [2018-10-25 02:04:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21589 to 18496. [2018-10-25 02:04:45,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18496 states. [2018-10-25 02:04:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18496 states to 18496 states and 21816 transitions. [2018-10-25 02:04:45,662 INFO L78 Accepts]: Start accepts. Automaton has 18496 states and 21816 transitions. Word has length 489 [2018-10-25 02:04:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:04:45,663 INFO L481 AbstractCegarLoop]: Abstraction has 18496 states and 21816 transitions. [2018-10-25 02:04:45,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-25 02:04:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 18496 states and 21816 transitions. [2018-10-25 02:04:45,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-10-25 02:04:45,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:04:45,696 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:04:45,696 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:04:45,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:45,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1817005450, now seen corresponding path program 1 times [2018-10-25 02:04:45,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:04:45,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:45,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:45,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:04:45,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:04:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 121 proven. 159 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-25 02:04:46,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:46,614 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:04:46,614 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 501 with the following transitions: [2018-10-25 02:04:46,615 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], [958], [962], [964], [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], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2275], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:04:46,622 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:04:46,623 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:04:48,046 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:04:48,046 INFO L272 AbstractInterpreter]: Visited 299 different actions 904 times. Merged at 8 different actions 30 times. Widened at 1 different actions 1 times. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 02:04:48,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:04:48,084 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:04:48,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:04:48,084 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:04:48,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:04:48,095 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:04:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:04:48,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:04:49,047 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-10-25 02:04:49,048 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:04:51,611 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 25 [2018-10-25 02:04:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 121 proven. 231 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-25 02:04:52,603 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:04:52,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2018-10-25 02:04:52,603 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:04:52,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 02:04:52,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 02:04:52,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-10-25 02:04:52,606 INFO L87 Difference]: Start difference. First operand 18496 states and 21816 transitions. Second operand 9 states. [2018-10-25 02:05:04,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:05:04,120 INFO L93 Difference]: Finished difference Result 52094 states and 61805 transitions. [2018-10-25 02:05:04,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-25 02:05:04,121 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 500 [2018-10-25 02:05:04,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:05:04,227 INFO L225 Difference]: With dead ends: 52094 [2018-10-25 02:05:04,228 INFO L226 Difference]: Without dead ends: 32736 [2018-10-25 02:05:04,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 1004 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2018-10-25 02:05:04,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32736 states. [2018-10-25 02:05:05,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32736 to 28673. [2018-10-25 02:05:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28673 states. [2018-10-25 02:05:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28673 states to 28673 states and 33561 transitions. [2018-10-25 02:05:05,223 INFO L78 Accepts]: Start accepts. Automaton has 28673 states and 33561 transitions. Word has length 500 [2018-10-25 02:05:05,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:05:05,224 INFO L481 AbstractCegarLoop]: Abstraction has 28673 states and 33561 transitions. [2018-10-25 02:05:05,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 02:05:05,224 INFO L276 IsEmpty]: Start isEmpty. Operand 28673 states and 33561 transitions. [2018-10-25 02:05:05,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-10-25 02:05:05,263 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:05:05,264 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:05:05,264 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:05:05,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:05:05,264 INFO L82 PathProgramCache]: Analyzing trace with hash 832784655, now seen corresponding path program 1 times [2018-10-25 02:05:05,264 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:05:05,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:05:05,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:05:05,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:05:05,266 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:05:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:05:05,861 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 6 [2018-10-25 02:05:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-25 02:05:06,326 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:05:06,326 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:05:06,326 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 612 with the following transitions: [2018-10-25 02:05:06,327 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], [958], [962], [964], [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], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2275], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:05:06,334 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:05:06,335 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:05:08,026 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:05:08,026 INFO L272 AbstractInterpreter]: Visited 300 different actions 914 times. Merged at 9 different actions 37 times. Widened at 1 different actions 3 times. Found 7 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 02:05:08,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:05:08,068 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:05:08,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:05:08,069 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:05:08,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:05:08,080 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:05:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:05:08,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:05:08,741 WARN L179 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 18 [2018-10-25 02:05:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-10-25 02:05:09,435 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:05:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-10-25 02:05:09,914 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-25 02:05:09,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2018-10-25 02:05:09,915 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:05:09,916 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:05:09,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:05:09,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-25 02:05:09,916 INFO L87 Difference]: Start difference. First operand 28673 states and 33561 transitions. Second operand 3 states. [2018-10-25 02:05:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:05:58,045 INFO L93 Difference]: Finished difference Result 69613 states and 82458 transitions. [2018-10-25 02:05:58,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:05:58,046 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 611 [2018-10-25 02:05:58,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:05:58,144 INFO L225 Difference]: With dead ends: 69613 [2018-10-25 02:05:58,144 INFO L226 Difference]: Without dead ends: 40945 [2018-10-25 02:05:58,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1226 GetRequests, 1221 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-10-25 02:05:58,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40945 states. [2018-10-25 02:05:58,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40945 to 39203. [2018-10-25 02:05:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39203 states. [2018-10-25 02:05:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39203 states to 39203 states and 45677 transitions. [2018-10-25 02:05:58,867 INFO L78 Accepts]: Start accepts. Automaton has 39203 states and 45677 transitions. Word has length 611 [2018-10-25 02:05:58,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:05:58,868 INFO L481 AbstractCegarLoop]: Abstraction has 39203 states and 45677 transitions. [2018-10-25 02:05:58,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:05:58,869 INFO L276 IsEmpty]: Start isEmpty. Operand 39203 states and 45677 transitions. [2018-10-25 02:05:58,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 692 [2018-10-25 02:05:58,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:05:58,917 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2018-10-25 02:05:58,917 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:05:58,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:05:58,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1388840388, now seen corresponding path program 1 times [2018-10-25 02:05:58,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:05:58,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:05:58,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:05:58,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:05:58,921 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:05:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:05:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 956 trivial. 0 not checked. [2018-10-25 02:05:59,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:05:59,870 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:05:59,870 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 692 with the following transitions: [2018-10-25 02:05:59,871 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], [958], [962], [964], [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], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1670], [1673], [1677], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:05:59,876 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:05:59,876 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:06:01,150 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:06:01,150 INFO L272 AbstractInterpreter]: Visited 217 different actions 670 times. Merged at 10 different actions 44 times. Widened at 1 different actions 4 times. Found 9 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 02:06:01,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:01,191 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:06:01,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:06:01,191 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:06:01,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:01,206 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:06:01,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:01,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:06:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2018-10-25 02:06:01,760 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:06:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 956 trivial. 0 not checked. [2018-10-25 02:06:02,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:06:02,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-10-25 02:06:02,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:06:02,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:06:02,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:06:02,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:06:02,152 INFO L87 Difference]: Start difference. First operand 39203 states and 45677 transitions. Second operand 3 states. [2018-10-25 02:06:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:06:06,456 INFO L93 Difference]: Finished difference Result 100968 states and 119402 transitions. [2018-10-25 02:06:06,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:06:06,456 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 691 [2018-10-25 02:06:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:06:06,634 INFO L225 Difference]: With dead ends: 100968 [2018-10-25 02:06:06,635 INFO L226 Difference]: Without dead ends: 61771 [2018-10-25 02:06:06,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1384 GetRequests, 1382 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:06:06,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61771 states. [2018-10-25 02:06:07,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61771 to 61311. [2018-10-25 02:06:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61311 states. [2018-10-25 02:06:07,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61311 states to 61311 states and 71609 transitions. [2018-10-25 02:06:07,751 INFO L78 Accepts]: Start accepts. Automaton has 61311 states and 71609 transitions. Word has length 691 [2018-10-25 02:06:07,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:06:07,751 INFO L481 AbstractCegarLoop]: Abstraction has 61311 states and 71609 transitions. [2018-10-25 02:06:07,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:06:07,752 INFO L276 IsEmpty]: Start isEmpty. Operand 61311 states and 71609 transitions. [2018-10-25 02:06:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2018-10-25 02:06:07,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:06:07,818 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:06:07,818 INFO L424 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:06:07,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:07,819 INFO L82 PathProgramCache]: Analyzing trace with hash 650424333, now seen corresponding path program 1 times [2018-10-25 02:06:07,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:06:07,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:07,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:07,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:07,820 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:06:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:08,422 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-10-25 02:06:08,672 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-10-25 02:06:08,672 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 02:06:08,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 02:06:08,672 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:06:08,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 02:06:08,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 02:06:08,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:06:08,673 INFO L87 Difference]: Start difference. First operand 61311 states and 71609 transitions. Second operand 4 states. [2018-10-25 02:06:15,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:06:15,342 INFO L93 Difference]: Finished difference Result 156392 states and 183718 transitions. [2018-10-25 02:06:15,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 02:06:15,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 733 [2018-10-25 02:06:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:06:15,575 INFO L225 Difference]: With dead ends: 156392 [2018-10-25 02:06:15,575 INFO L226 Difference]: Without dead ends: 95529 [2018-10-25 02:06:15,650 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 02:06:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95529 states. [2018-10-25 02:06:16,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95529 to 87728. [2018-10-25 02:06:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87728 states. [2018-10-25 02:06:17,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87728 states to 87728 states and 102777 transitions. [2018-10-25 02:06:17,061 INFO L78 Accepts]: Start accepts. Automaton has 87728 states and 102777 transitions. Word has length 733 [2018-10-25 02:06:17,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:06:17,062 INFO L481 AbstractCegarLoop]: Abstraction has 87728 states and 102777 transitions. [2018-10-25 02:06:17,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 02:06:17,062 INFO L276 IsEmpty]: Start isEmpty. Operand 87728 states and 102777 transitions. [2018-10-25 02:06:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2018-10-25 02:06:17,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:06:17,145 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:06:17,145 INFO L424 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:06:17,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:17,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1236813654, now seen corresponding path program 1 times [2018-10-25 02:06:17,146 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:06:17,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:17,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:17,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:17,147 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:06:17,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:17,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 211 proven. 4 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2018-10-25 02:06:17,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:06:17,943 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:06:17,943 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 803 with the following transitions: [2018-10-25 02:06:17,944 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [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], [958], [962], [964], [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], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1508], [1511], [1515], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:06:17,950 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:06:17,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:06:23,728 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:06:23,728 INFO L272 AbstractInterpreter]: Visited 361 different actions 1097 times. Merged at 9 different actions 38 times. Widened at 1 different actions 3 times. Found 8 fixpoints after 4 different actions. Largest state had 26 variables. [2018-10-25 02:06:23,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:23,735 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:06:23,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:06:23,735 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:06:23,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:23,744 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:06:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:23,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:06:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-10-25 02:06:24,311 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:06:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 217 proven. 12 refuted. 0 times theorem prover too weak. 878 trivial. 0 not checked. [2018-10-25 02:06:24,669 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-25 02:06:24,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2018-10-25 02:06:24,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 02:06:24,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-25 02:06:24,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-25 02:06:24,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:06:24,671 INFO L87 Difference]: Start difference. First operand 87728 states and 102777 transitions. Second operand 3 states. [2018-10-25 02:06:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 02:06:28,436 INFO L93 Difference]: Finished difference Result 160994 states and 188967 transitions. [2018-10-25 02:06:28,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-25 02:06:28,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 802 [2018-10-25 02:06:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 02:06:28,617 INFO L225 Difference]: With dead ends: 160994 [2018-10-25 02:06:28,618 INFO L226 Difference]: Without dead ends: 74148 [2018-10-25 02:06:28,701 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1607 GetRequests, 1600 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 02:06:28,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74148 states. [2018-10-25 02:06:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74148 to 72838. [2018-10-25 02:06:29,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72838 states. [2018-10-25 02:06:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72838 states to 72838 states and 85428 transitions. [2018-10-25 02:06:29,742 INFO L78 Accepts]: Start accepts. Automaton has 72838 states and 85428 transitions. Word has length 802 [2018-10-25 02:06:29,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 02:06:29,742 INFO L481 AbstractCegarLoop]: Abstraction has 72838 states and 85428 transitions. [2018-10-25 02:06:29,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-25 02:06:29,743 INFO L276 IsEmpty]: Start isEmpty. Operand 72838 states and 85428 transitions. [2018-10-25 02:06:29,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2018-10-25 02:06:29,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 02:06:29,802 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 02:06:29,802 INFO L424 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 02:06:29,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:29,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2770182, now seen corresponding path program 1 times [2018-10-25 02:06:29,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 02:06:29,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:29,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:29,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 02:06:29,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 02:06:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:30,973 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 5 [2018-10-25 02:06:31,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 640 proven. 35 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-10-25 02:06:31,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:06:31,446 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 02:06:31,447 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 840 with the following transitions: [2018-10-25 02:06:31,447 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [95], [710], [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], [958], [962], [964], [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], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1861], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-10-25 02:06:31,453 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 02:06:31,454 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 02:06:33,498 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 02:06:33,498 INFO L272 AbstractInterpreter]: Visited 326 different actions 997 times. Merged at 10 different actions 45 times. Widened at 1 different actions 5 times. Found 9 fixpoints after 3 different actions. Largest state had 26 variables. [2018-10-25 02:06:33,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 02:06:33,503 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 02:06:33,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 02:06:33,503 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 02:06:33,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 02:06:33,511 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 02:06:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 02:06:33,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 02:06:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 640 proven. 35 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-10-25 02:06:34,465 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 02:06:35,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1206 backedges. 673 proven. 2 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-10-25 02:06:35,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 02:06:35,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2018-10-25 02:06:35,539 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 02:06:35,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-25 02:06:35,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-25 02:06:35,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-10-25 02:06:35,541 INFO L87 Difference]: Start difference. First operand 72838 states and 85428 transitions. Second operand 10 states. Received shutdown request... [2018-10-25 02:06:40,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-25 02:06:40,955 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 02:06:40,960 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 02:06:40,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 02:06:40 BoogieIcfgContainer [2018-10-25 02:06:40,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 02:06:40,962 INFO L168 Benchmark]: Toolchain (without parser) took 228120.18 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -568.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-25 02:06:40,965 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-25 02:06:40,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1539.21 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-25 02:06:40,966 INFO L168 Benchmark]: Boogie Procedure Inliner took 557.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -915.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-25 02:06:40,967 INFO L168 Benchmark]: Boogie Preprocessor took 363.86 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2018-10-25 02:06:40,968 INFO L168 Benchmark]: RCFGBuilder took 11910.38 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: 457.4 MB). Peak memory consumption was 457.4 MB. Max. memory is 7.1 GB. [2018-10-25 02:06:40,969 INFO L168 Benchmark]: TraceAbstraction took 213740.36 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -266.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-25 02:06:40,978 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 1539.21 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 557.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -915.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 363.86 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11910.38 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: 457.4 MB). Peak memory consumption was 457.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213740.36 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -266.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 119). Cancelled while BasicCegarLoop was constructing difference of abstraction (72838states) and FLOYD_HOARE automaton (currently 11 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (2343 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 213.6s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 159.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3698 SDtfs, 20866 SDslu, 2297 SDs, 0 SdLazy, 34885 SolverSat, 8395 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 143.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9724 GetRequests, 9589 SyntacticMatches, 17 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 12.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87728occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.4s AbstIntTime, 10 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 19488 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 22.8s InterpolantComputationTime, 10775 NumberOfCodeBlocks, 10775 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 15533 ConstructedInterpolants, 299 QuantifiedInterpolants, 19957410 SizeOfPredicates, 20 NumberOfNonLiveVariables, 7221 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 34 InterpolantComputations, 12 PerfectInterpolantSequences, 16619/17264 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown