java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:40:09,727 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:40:09,731 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:40:09,749 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:40:09,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:40:09,750 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:40:09,752 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:40:09,755 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:40:09,756 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:40:09,758 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:40:09,759 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:40:09,759 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:40:09,761 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:40:09,762 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:40:09,765 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:40:09,771 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:40:09,772 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:40:09,776 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:40:09,777 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:40:09,781 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:40:09,782 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:40:09,784 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:40:09,786 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:40:09,805 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:40:09,833 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:40:09,833 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:40:09,837 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:40:09,838 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:40:09,838 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:40:09,838 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:40:09,838 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:40:09,838 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:40:09,839 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:40:09,839 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:40:09,839 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:40:09,839 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:40:09,840 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:40:09,840 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:40:09,840 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:40:09,841 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:40:09,842 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:40:09,842 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:40:09,842 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:40:09,842 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:40:09,842 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:40:09,843 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:40:09,843 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:40:09,843 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:40:09,843 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:40:09,843 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:40:09,843 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:40:09,845 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:40:09,845 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:40:09,845 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:40:09,845 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:40:09,846 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:40:09,846 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:40:09,846 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:40:09,896 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:40:09,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:40:09,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:40:09,916 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:40:09,916 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:40:09,917 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-11-07 03:40:09,980 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f99e86bf/9340aa27b86a426d88c9a321de475769/FLAGae0d25a3a [2018-11-07 03:40:10,653 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:40:10,654 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label57_true-unreach-call.c [2018-11-07 03:40:10,671 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f99e86bf/9340aa27b86a426d88c9a321de475769/FLAGae0d25a3a [2018-11-07 03:40:10,686 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f99e86bf/9340aa27b86a426d88c9a321de475769 [2018-11-07 03:40:10,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:40:10,701 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:40:10,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:40:10,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:40:10,707 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:40:10,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:40:10" (1/1) ... [2018-11-07 03:40:10,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbdaad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:10, skipping insertion in model container [2018-11-07 03:40:10,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:40:10" (1/1) ... [2018-11-07 03:40:10,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:40:10,831 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:40:11,667 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:40:11,672 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:40:11,970 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:40:11,992 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:40:11,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11 WrapperNode [2018-11-07 03:40:11,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:40:11,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:40:11,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:40:11,995 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:40:12,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (1/1) ... [2018-11-07 03:40:12,216 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (1/1) ... [2018-11-07 03:40:12,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:40:12,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:40:12,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:40:12,229 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:40:12,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (1/1) ... [2018-11-07 03:40:12,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (1/1) ... [2018-11-07 03:40:12,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (1/1) ... [2018-11-07 03:40:12,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (1/1) ... [2018-11-07 03:40:12,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (1/1) ... [2018-11-07 03:40:12,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (1/1) ... [2018-11-07 03:40:12,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (1/1) ... [2018-11-07 03:40:12,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:40:12,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:40:12,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:40:12,400 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:40:12,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 03:40:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:40:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:40:12,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:40:12,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:40:12,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:40:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:40:12,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:40:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:40:12,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:40:12,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:40:12,472 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:40:18,793 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:40:18,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:40:18 BoogieIcfgContainer [2018-11-07 03:40:18,794 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:40:18,795 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:40:18,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:40:18,799 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:40:18,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:40:10" (1/3) ... [2018-11-07 03:40:18,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686030dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:40:18, skipping insertion in model container [2018-11-07 03:40:18,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:40:11" (2/3) ... [2018-11-07 03:40:18,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686030dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:40:18, skipping insertion in model container [2018-11-07 03:40:18,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:40:18" (3/3) ... [2018-11-07 03:40:18,803 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label57_true-unreach-call.c [2018-11-07 03:40:18,812 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:40:18,820 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:40:18,835 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:40:18,875 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:40:18,876 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:40:18,876 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:40:18,876 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:40:18,876 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:40:18,876 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:40:18,876 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:40:18,877 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:40:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 03:40:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-07 03:40:18,918 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:18,919 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:40:18,922 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:18,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:18,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1926433044, now seen corresponding path program 1 times [2018-11-07 03:40:18,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:18,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:18,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:18,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:18,976 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:19,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:19,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:40:19,432 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:19,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:40:19,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:40:19,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:40:19,456 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 03:40:27,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:27,853 INFO L93 Difference]: Finished difference Result 1550 states and 2835 transitions. [2018-11-07 03:40:27,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:40:27,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-11-07 03:40:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:27,903 INFO L225 Difference]: With dead ends: 1550 [2018-11-07 03:40:27,903 INFO L226 Difference]: Without dead ends: 1106 [2018-11-07 03:40:27,916 INFO L604 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 [2018-11-07 03:40:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2018-11-07 03:40:28,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 762. [2018-11-07 03:40:28,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 762 states. [2018-11-07 03:40:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1263 transitions. [2018-11-07 03:40:28,059 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1263 transitions. Word has length 48 [2018-11-07 03:40:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:28,060 INFO L480 AbstractCegarLoop]: Abstraction has 762 states and 1263 transitions. [2018-11-07 03:40:28,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:40:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1263 transitions. [2018-11-07 03:40:28,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 03:40:28,074 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:28,075 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, 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] [2018-11-07 03:40:28,075 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:28,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:28,075 INFO L82 PathProgramCache]: Analyzing trace with hash -45753950, now seen corresponding path program 1 times [2018-11-07 03:40:28,076 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:28,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:28,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:28,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:28,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:28,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:28,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:40:28,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:28,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:40:28,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:40:28,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:40:28,394 INFO L87 Difference]: Start difference. First operand 762 states and 1263 transitions. Second operand 5 states. [2018-11-07 03:40:33,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:33,872 INFO L93 Difference]: Finished difference Result 2248 states and 3762 transitions. [2018-11-07 03:40:33,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:40:33,875 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-11-07 03:40:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:33,892 INFO L225 Difference]: With dead ends: 2248 [2018-11-07 03:40:33,892 INFO L226 Difference]: Without dead ends: 1492 [2018-11-07 03:40:33,897 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:40:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-11-07 03:40:33,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1457. [2018-11-07 03:40:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2018-11-07 03:40:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2152 transitions. [2018-11-07 03:40:33,972 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2152 transitions. Word has length 121 [2018-11-07 03:40:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:33,972 INFO L480 AbstractCegarLoop]: Abstraction has 1457 states and 2152 transitions. [2018-11-07 03:40:33,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:40:33,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2152 transitions. [2018-11-07 03:40:33,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 03:40:33,979 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:33,979 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, 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] [2018-11-07 03:40:33,979 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:33,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:33,985 INFO L82 PathProgramCache]: Analyzing trace with hash 935470738, now seen corresponding path program 1 times [2018-11-07 03:40:33,985 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:33,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:33,986 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:33,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:33,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:40:34,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:40:34,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:40:34,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:34,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:40:34,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:40:34,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:40:34,185 INFO L87 Difference]: Start difference. First operand 1457 states and 2152 transitions. Second operand 4 states. [2018-11-07 03:40:39,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:40:39,097 INFO L93 Difference]: Finished difference Result 5393 states and 8280 transitions. [2018-11-07 03:40:39,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:40:39,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-11-07 03:40:39,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:40:39,123 INFO L225 Difference]: With dead ends: 5393 [2018-11-07 03:40:39,124 INFO L226 Difference]: Without dead ends: 3942 [2018-11-07 03:40:39,137 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:40:39,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3942 states. [2018-11-07 03:40:39,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3942 to 3942. [2018-11-07 03:40:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3942 states. [2018-11-07 03:40:39,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3942 states to 3942 states and 5428 transitions. [2018-11-07 03:40:39,247 INFO L78 Accepts]: Start accepts. Automaton has 3942 states and 5428 transitions. Word has length 129 [2018-11-07 03:40:39,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:40:39,248 INFO L480 AbstractCegarLoop]: Abstraction has 3942 states and 5428 transitions. [2018-11-07 03:40:39,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:40:39,248 INFO L276 IsEmpty]: Start isEmpty. Operand 3942 states and 5428 transitions. [2018-11-07 03:40:39,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-07 03:40:39,254 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:40:39,255 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:40:39,255 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:40:39,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:39,255 INFO L82 PathProgramCache]: Analyzing trace with hash 107667736, now seen corresponding path program 1 times [2018-11-07 03:40:39,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:40:39,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:39,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:40:39,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:40:39,257 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:40:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:40:39,549 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:40:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 82 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:40:39,782 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:40:39,782 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:40:39,783 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 216 with the following transitions: [2018-11-07 03:40:39,785 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:40:39,870 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:40:39,870 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:40:41,241 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:40:41,741 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:40:41,743 INFO L272 AbstractInterpreter]: Visited 90 different actions 90 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 03:40:41,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:40:41,768 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:40:43,792 INFO L227 lantSequenceWeakener]: Weakened 205 states. On average, predicates are now at 78.03% of their original sizes. [2018-11-07 03:40:43,793 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:40:44,043 INFO L415 sIntCurrentIteration]: We unified 214 AI predicates to 214 [2018-11-07 03:40:44,043 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:40:44,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:40:44,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 03:40:44,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:40:44,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 03:40:44,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 03:40:44,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 03:40:44,046 INFO L87 Difference]: Start difference. First operand 3942 states and 5428 transitions. Second operand 7 states. [2018-11-07 03:42:06,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:42:06,463 INFO L93 Difference]: Finished difference Result 8188 states and 11232 transitions. [2018-11-07 03:42:06,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:42:06,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2018-11-07 03:42:06,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:42:06,485 INFO L225 Difference]: With dead ends: 8188 [2018-11-07 03:42:06,485 INFO L226 Difference]: Without dead ends: 4252 [2018-11-07 03:42:06,503 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:42:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2018-11-07 03:42:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 4250. [2018-11-07 03:42:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4250 states. [2018-11-07 03:42:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 5744 transitions. [2018-11-07 03:42:06,617 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 5744 transitions. Word has length 215 [2018-11-07 03:42:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:42:06,618 INFO L480 AbstractCegarLoop]: Abstraction has 4250 states and 5744 transitions. [2018-11-07 03:42:06,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 03:42:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 5744 transitions. [2018-11-07 03:42:06,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-11-07 03:42:06,627 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:42:06,627 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, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2018-11-07 03:42:06,628 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:42:06,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:42:06,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1560998385, now seen corresponding path program 1 times [2018-11-07 03:42:06,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:42:06,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:06,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:42:06,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:42:06,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:42:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:42:07,013 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:42:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 129 proven. 221 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-07 03:42:07,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:42:07,205 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:42:07,205 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 312 with the following transitions: [2018-11-07 03:42:07,206 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 03:42:07,213 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:42:07,214 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:42:08,612 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:42:14,661 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:42:14,662 INFO L272 AbstractInterpreter]: Visited 105 different actions 303 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:42:14,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:42:14,672 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:42:17,297 INFO L227 lantSequenceWeakener]: Weakened 58 states. On average, predicates are now at 78.13% of their original sizes. [2018-11-07 03:42:17,297 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:43:39,363 INFO L415 sIntCurrentIteration]: We unified 310 AI predicates to 310 [2018-11-07 03:43:39,363 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:43:39,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:43:39,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 03:43:39,364 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:43:39,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 03:43:39,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 03:43:39,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-11-07 03:43:39,366 INFO L87 Difference]: Start difference. First operand 4250 states and 5744 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 03:44:04,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 03:44:04,797 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:44:04,803 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:44:04,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:44:04 BoogieIcfgContainer [2018-11-07 03:44:04,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:44:04,805 INFO L168 Benchmark]: Toolchain (without parser) took 234105.23 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -657.5 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 03:44:04,806 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:44:04,807 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1291.91 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:04,808 INFO L168 Benchmark]: Boogie Procedure Inliner took 234.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -884.7 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:04,809 INFO L168 Benchmark]: Boogie Preprocessor took 170.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:04,809 INFO L168 Benchmark]: RCFGBuilder took 6394.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 277.0 MB). Peak memory consumption was 277.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:44:04,810 INFO L168 Benchmark]: TraceAbstraction took 226008.97 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 03:44:04,816 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1291.91 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 234.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -884.7 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6394.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 277.0 MB). Peak memory consumption was 277.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226008.97 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -183.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (4250states) and FLOYD_HOARE automaton (currently 17 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (119 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 225.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 126.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1176 SDtfs, 4031 SDslu, 1035 SDs, 0 SdLazy, 7140 SolverSat, 1834 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 76.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 550 GetRequests, 371 SyntacticMatches, 144 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 82.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4250occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9955021296603607 AbsIntWeakeningRatio, 0.11450381679389313 AbsIntAvgWeakeningVarsNumRemoved, 709.6736641221374 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 381 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 824 NumberOfCodeBlocks, 824 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 819 ConstructedInterpolants, 0 QuantifiedInterpolants, 559839 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 316/612 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown