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/Problem11_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:57:27,667 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:57:27,669 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:57:27,682 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:57:27,682 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:57:27,683 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:57:27,685 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:57:27,687 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:57:27,688 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:57:27,689 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:57:27,690 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:57:27,691 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:57:27,691 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:57:27,692 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:57:27,694 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:57:27,694 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:57:27,699 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:57:27,700 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:57:27,704 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:57:27,706 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:57:27,707 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:57:27,711 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:57:27,714 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 02:57:27,724 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 02:57:27,724 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 02:57:27,727 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 02:57:27,728 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 02:57:27,728 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 02:57:27,758 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:57:27,758 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:57:27,759 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:57:27,759 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:57:27,759 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:57:27,763 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:57:27,763 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:57:27,763 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:57:27,763 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:57:27,763 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:57:27,764 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:57:27,764 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:57:27,765 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:57:27,765 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:57:27,765 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:57:27,765 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:57:27,765 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:57:27,767 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:57:27,767 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:57:27,767 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:57:27,767 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:57:27,767 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:57:27,768 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:57:27,768 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:57:27,768 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:57:27,768 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:57:27,768 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:57:27,769 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:57:27,770 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:57:27,770 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:57:27,770 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:57:27,770 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:57:27,771 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:57:27,771 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:57:27,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:57:27,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:57:27,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:57:27,840 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:57:27,841 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:57:27,842 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28_true-unreach-call.c [2018-11-07 02:57:27,907 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4137d98da/a2b15d01331a4d299642721a7a5c6480/FLAG8d6eac5f4 [2018-11-07 02:57:28,565 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:57:28,566 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label28_true-unreach-call.c [2018-11-07 02:57:28,586 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4137d98da/a2b15d01331a4d299642721a7a5c6480/FLAG8d6eac5f4 [2018-11-07 02:57:28,607 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4137d98da/a2b15d01331a4d299642721a7a5c6480 [2018-11-07 02:57:28,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:57:28,624 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:57:28,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:57:28,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:57:28,631 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:57:28,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:57:28" (1/1) ... [2018-11-07 02:57:28,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e69057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:28, skipping insertion in model container [2018-11-07 02:57:28,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:57:28" (1/1) ... [2018-11-07 02:57:28,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:57:28,731 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:57:29,292 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:57:29,297 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:57:29,470 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:57:29,488 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:57:29,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29 WrapperNode [2018-11-07 02:57:29,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:57:29,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:57:29,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:57:29,490 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:57:29,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (1/1) ... [2018-11-07 02:57:29,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (1/1) ... [2018-11-07 02:57:29,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:57:29,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:57:29,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:57:29,677 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:57:29,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (1/1) ... [2018-11-07 02:57:29,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (1/1) ... [2018-11-07 02:57:29,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (1/1) ... [2018-11-07 02:57:29,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (1/1) ... [2018-11-07 02:57:29,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (1/1) ... [2018-11-07 02:57:29,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (1/1) ... [2018-11-07 02:57:29,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (1/1) ... [2018-11-07 02:57:29,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:57:29,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:57:29,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:57:29,835 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:57:29,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (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 02:57:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:57:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:57:29,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:57:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:57:29,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:57:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:57:29,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:57:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:57:29,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:57:33,779 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:57:33,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:57:33 BoogieIcfgContainer [2018-11-07 02:57:33,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:57:33,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:57:33,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:57:33,786 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:57:33,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:57:28" (1/3) ... [2018-11-07 02:57:33,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3863c14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:57:33, skipping insertion in model container [2018-11-07 02:57:33,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:29" (2/3) ... [2018-11-07 02:57:33,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3863c14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:57:33, skipping insertion in model container [2018-11-07 02:57:33,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:57:33" (3/3) ... [2018-11-07 02:57:33,793 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label28_true-unreach-call.c [2018-11-07 02:57:33,805 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:57:33,820 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:57:33,839 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:57:33,897 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:57:33,898 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:57:33,898 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:57:33,898 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:57:33,898 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:57:33,898 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:57:33,899 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:57:33,899 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:57:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 02:57:33,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-07 02:57:33,966 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:57:33,968 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:57:33,970 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:57:33,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:57:33,980 INFO L82 PathProgramCache]: Analyzing trace with hash -718311439, now seen corresponding path program 1 times [2018-11-07 02:57:33,984 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:57:34,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:57:34,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:57:34,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:57:34,045 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:57:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:57:34,545 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 02:57:34,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:57:34,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:57:34,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:57:34,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:57:34,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:57:34,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:57:34,580 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 02:57:38,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:57:38,083 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-11-07 02:57:38,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:57:38,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-07 02:57:38,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:57:38,108 INFO L225 Difference]: With dead ends: 982 [2018-11-07 02:57:38,108 INFO L226 Difference]: Without dead ends: 683 [2018-11-07 02:57:38,117 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 02:57:38,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-11-07 02:57:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-11-07 02:57:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-11-07 02:57:38,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-11-07 02:57:38,225 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 55 [2018-11-07 02:57:38,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:57:38,226 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-11-07 02:57:38,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:57:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-11-07 02:57:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 02:57:38,235 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:57:38,235 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, 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] [2018-11-07 02:57:38,236 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:57:38,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:57:38,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2084126164, now seen corresponding path program 1 times [2018-11-07 02:57:38,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:57:38,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:57:38,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:57:38,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:57:38,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:57:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:57:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:57:38,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:57:38,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 02:57:38,518 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:57:38,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 02:57:38,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 02:57:38,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 02:57:38,525 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 4 states. [2018-11-07 02:57:42,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:57:42,031 INFO L93 Difference]: Finished difference Result 2512 states and 3858 transitions. [2018-11-07 02:57:42,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 02:57:42,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-11-07 02:57:42,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:57:42,052 INFO L225 Difference]: With dead ends: 2512 [2018-11-07 02:57:42,052 INFO L226 Difference]: Without dead ends: 1835 [2018-11-07 02:57:42,058 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 02:57:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2018-11-07 02:57:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1820. [2018-11-07 02:57:42,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2018-11-07 02:57:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2585 transitions. [2018-11-07 02:57:42,162 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2585 transitions. Word has length 129 [2018-11-07 02:57:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:57:42,163 INFO L480 AbstractCegarLoop]: Abstraction has 1820 states and 2585 transitions. [2018-11-07 02:57:42,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 02:57:42,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2585 transitions. [2018-11-07 02:57:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 02:57:42,179 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:57:42,179 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, 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] [2018-11-07 02:57:42,181 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:57:42,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:57:42,182 INFO L82 PathProgramCache]: Analyzing trace with hash 643157075, now seen corresponding path program 1 times [2018-11-07 02:57:42,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:57:42,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:57:42,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:57:42,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:57:42,184 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:57:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:57:42,560 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:57:42,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:57:42,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:57:42,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:57:42,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:57:42,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:57:42,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:57:42,562 INFO L87 Difference]: Start difference. First operand 1820 states and 2585 transitions. Second operand 6 states. [2018-11-07 02:57:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:57:46,482 INFO L93 Difference]: Finished difference Result 6276 states and 9168 transitions. [2018-11-07 02:57:46,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:57:46,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 02:57:46,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:57:46,520 INFO L225 Difference]: With dead ends: 6276 [2018-11-07 02:57:46,520 INFO L226 Difference]: Without dead ends: 4462 [2018-11-07 02:57:46,538 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 02:57:46,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2018-11-07 02:57:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 4307. [2018-11-07 02:57:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2018-11-07 02:57:46,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5763 transitions. [2018-11-07 02:57:46,671 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5763 transitions. Word has length 136 [2018-11-07 02:57:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:57:46,671 INFO L480 AbstractCegarLoop]: Abstraction has 4307 states and 5763 transitions. [2018-11-07 02:57:46,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:57:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5763 transitions. [2018-11-07 02:57:46,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-07 02:57:46,682 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:57:46,682 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:57:46,682 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:57:46,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:57:46,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1736454008, now seen corresponding path program 1 times [2018-11-07 02:57:46,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:57:46,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:57:46,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:57:46,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:57:46,684 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:57:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:57:47,360 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 02:57:47,562 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-11-07 02:57:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 02:57:47,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:57:47,688 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:57:47,689 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-07 02:57:47,691 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [538], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:57:47,763 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:57:47,763 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:57:49,555 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:57:50,972 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:57:50,974 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 02:57:51,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:57:51,009 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:57:53,715 INFO L227 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 73.77% of their original sizes. [2018-11-07 02:57:53,715 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:57:54,254 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-11-07 02:57:54,254 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:57:54,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:57:54,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 02:57:54,256 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:57:54,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 02:57:54,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 02:57:54,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 02:57:54,258 INFO L87 Difference]: Start difference. First operand 4307 states and 5763 transitions. Second operand 7 states. [2018-11-07 02:58:27,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:58:27,602 INFO L93 Difference]: Finished difference Result 8800 states and 11737 transitions. [2018-11-07 02:58:27,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:58:27,602 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2018-11-07 02:58:27,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:58:27,627 INFO L225 Difference]: With dead ends: 8800 [2018-11-07 02:58:27,627 INFO L226 Difference]: Without dead ends: 4499 [2018-11-07 02:58:27,643 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 02:58:27,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4499 states. [2018-11-07 02:58:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4499 to 4497. [2018-11-07 02:58:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4497 states. [2018-11-07 02:58:27,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 5963 transitions. [2018-11-07 02:58:27,756 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 5963 transitions. Word has length 210 [2018-11-07 02:58:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:58:27,757 INFO L480 AbstractCegarLoop]: Abstraction has 4497 states and 5963 transitions. [2018-11-07 02:58:27,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 02:58:27,757 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 5963 transitions. [2018-11-07 02:58:27,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-07 02:58:27,765 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:58:27,766 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:58:27,766 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:58:27,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:58:27,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1439039131, now seen corresponding path program 1 times [2018-11-07 02:58:27,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:58:27,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:58:27,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:58:27,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:58:27,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:58:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:58:28,159 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 02:58:28,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:58:28,160 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:58:28,161 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-11-07 02:58:28,161 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:58:28,168 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:58:28,168 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:58:29,446 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:59:07,925 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 02:59:07,926 INFO L272 AbstractInterpreter]: Visited 126 different actions 858 times. Merged at 7 different actions 44 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 02:59:07,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:59:07,937 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 02:59:07,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:59:07,937 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 02:59:07,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:59:07,949 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 02:59:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:59:08,063 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 02:59:08,304 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:59:08,304 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 02:59:08,617 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 02:59:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:59:09,295 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 02:59:09,295 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 02:59:09,295 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 02:59:09,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 02:59:09,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 02:59:09,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-07 02:59:09,297 INFO L87 Difference]: Start difference. First operand 4497 states and 5963 transitions. Second operand 10 states. [2018-11-07 02:59:26,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:59:26,354 INFO L93 Difference]: Finished difference Result 22649 states and 33174 transitions. [2018-11-07 02:59:26,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-11-07 02:59:26,355 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2018-11-07 02:59:26,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:59:26,442 INFO L225 Difference]: With dead ends: 22649 [2018-11-07 02:59:26,442 INFO L226 Difference]: Without dead ends: 18348 [2018-11-07 02:59:26,503 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 527 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=739, Invalid=3167, Unknown=0, NotChecked=0, Total=3906 [2018-11-07 02:59:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18348 states. [2018-11-07 02:59:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18348 to 17705. [2018-11-07 02:59:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17705 states. [2018-11-07 02:59:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17705 states to 17705 states and 22720 transitions. [2018-11-07 02:59:26,952 INFO L78 Accepts]: Start accepts. Automaton has 17705 states and 22720 transitions. Word has length 253 [2018-11-07 02:59:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:59:26,953 INFO L480 AbstractCegarLoop]: Abstraction has 17705 states and 22720 transitions. [2018-11-07 02:59:26,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 02:59:26,954 INFO L276 IsEmpty]: Start isEmpty. Operand 17705 states and 22720 transitions. [2018-11-07 02:59:26,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-11-07 02:59:26,976 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:59:26,977 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:59:26,977 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:59:26,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:59:26,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1247546700, now seen corresponding path program 1 times [2018-11-07 02:59:26,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:59:26,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:59:26,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:59:26,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:59:26,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:59:27,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:59:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 02:59:27,276 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:59:27,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:59:27,276 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:59:27,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:59:27,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:59:27,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:59:27,278 INFO L87 Difference]: Start difference. First operand 17705 states and 22720 transitions. Second operand 3 states. [2018-11-07 02:59:29,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:59:29,654 INFO L93 Difference]: Finished difference Result 39433 states and 51781 transitions. [2018-11-07 02:59:29,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:59:29,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2018-11-07 02:59:29,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:59:29,746 INFO L225 Difference]: With dead ends: 39433 [2018-11-07 02:59:29,746 INFO L226 Difference]: Without dead ends: 22113 [2018-11-07 02:59:29,789 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:59:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22113 states. [2018-11-07 02:59:30,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22113 to 21719. [2018-11-07 02:59:30,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21719 states. [2018-11-07 02:59:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21719 states to 21719 states and 27916 transitions. [2018-11-07 02:59:30,222 INFO L78 Accepts]: Start accepts. Automaton has 21719 states and 27916 transitions. Word has length 295 [2018-11-07 02:59:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:59:30,223 INFO L480 AbstractCegarLoop]: Abstraction has 21719 states and 27916 transitions. [2018-11-07 02:59:30,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:59:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 21719 states and 27916 transitions. [2018-11-07 02:59:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-11-07 02:59:30,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:59:30,261 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, 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, 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] [2018-11-07 02:59:30,261 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:59:30,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:59:30,263 INFO L82 PathProgramCache]: Analyzing trace with hash 407234496, now seen corresponding path program 1 times [2018-11-07 02:59:30,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:59:30,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:59:30,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:59:30,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:59:30,264 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:59:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:59:30,956 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 02:59:31,318 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 02:59:31,593 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 02:59:31,942 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 02:59:32,288 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 02:59:32,753 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 193 proven. 175 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 02:59:32,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:59:32,754 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:59:32,754 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 328 with the following transitions: [2018-11-07 02:59:32,754 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 02:59:32,760 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:59:32,760 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:59:34,251 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:00:21,727 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 03:00:21,727 INFO L272 AbstractInterpreter]: Visited 127 different actions 863 times. Merged at 7 different actions 42 times. Widened at 1 different actions 2 times. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 03:00:21,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:00:21,732 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 03:00:21,732 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:00:21,732 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 03:00:21,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:00:21,753 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 03:00:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:00:21,861 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 03:00:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-11-07 03:00:22,262 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 03:00:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-11-07 03:00:22,703 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:00:22,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [19] total 21 [2018-11-07 03:00:22,703 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:00:22,704 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:00:22,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:00:22,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2018-11-07 03:00:22,705 INFO L87 Difference]: Start difference. First operand 21719 states and 27916 transitions. Second operand 3 states. [2018-11-07 03:00:26,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:00:26,646 INFO L93 Difference]: Finished difference Result 51096 states and 66126 transitions. [2018-11-07 03:00:26,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:00:26,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2018-11-07 03:00:26,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:00:26,767 INFO L225 Difference]: With dead ends: 51096 [2018-11-07 03:00:26,768 INFO L226 Difference]: Without dead ends: 31066 [2018-11-07 03:00:26,814 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 654 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2018-11-07 03:00:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31066 states. [2018-11-07 03:00:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31066 to 31059. [2018-11-07 03:00:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31059 states. [2018-11-07 03:00:27,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31059 states to 31059 states and 39631 transitions. [2018-11-07 03:00:27,356 INFO L78 Accepts]: Start accepts. Automaton has 31059 states and 39631 transitions. Word has length 327 [2018-11-07 03:00:27,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:00:27,357 INFO L480 AbstractCegarLoop]: Abstraction has 31059 states and 39631 transitions. [2018-11-07 03:00:27,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:00:27,357 INFO L276 IsEmpty]: Start isEmpty. Operand 31059 states and 39631 transitions. [2018-11-07 03:00:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-11-07 03:00:27,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:00:27,392 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 03:00:27,392 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:00:27,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:00:27,392 INFO L82 PathProgramCache]: Analyzing trace with hash 735034412, now seen corresponding path program 1 times [2018-11-07 03:00:27,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:00:27,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:27,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:00:27,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:00:27,394 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:00:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:00:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:00:28,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:00:28,259 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:00:28,260 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-11-07 03:00:28,260 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [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], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [873], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 03:00:28,266 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:00:28,266 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:00:31,353 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:00:52,812 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:00:52,812 INFO L272 AbstractInterpreter]: Visited 159 different actions 465 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 03:00:52,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:00:52,821 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:00:56,963 INFO L227 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 77.18% of their original sizes. [2018-11-07 03:00:56,963 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 03:01:14,630 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:01:14,635 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:01:14,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:01:14 BoogieIcfgContainer [2018-11-07 03:01:14,635 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:01:14,636 INFO L168 Benchmark]: Toolchain (without parser) took 226014.90 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 983.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:01:14,637 INFO L168 Benchmark]: CDTParser took 0.20 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 03:01:14,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 864.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:01:14,638 INFO L168 Benchmark]: Boogie Procedure Inliner took 185.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -847.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:01:14,639 INFO L168 Benchmark]: Boogie Preprocessor took 158.74 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:01:14,640 INFO L168 Benchmark]: RCFGBuilder took 3947.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 172.1 MB). Peak memory consumption was 172.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:01:14,641 INFO L168 Benchmark]: TraceAbstraction took 220852.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 856.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:01:14,645 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 864.22 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 185.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -847.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.74 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3947.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 172.1 MB). Peak memory consumption was 172.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220852.43 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 856.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was analyzing trace of length 337 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 220.7s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 68.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2048 SDtfs, 7016 SDslu, 1722 SDs, 0 SdLazy, 17022 SolverSat, 2864 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1498 GetRequests, 1398 SyntacticMatches, 4 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31059occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 116.6s AbstIntTime, 4 AbstIntIterations, 2 AbstIntStrong, 0.996226268285092 AbsIntWeakeningRatio, 0.10477941176470588 AbsIntAvgWeakeningVarsNumRemoved, 1097.922794117647 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 1216 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 1985 NumberOfCodeBlocks, 1985 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2554 ConstructedInterpolants, 51 QuantifiedInterpolants, 3193806 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1031 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 1773/2120 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown