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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label06_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:58:01,856 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:58:01,858 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:58:01,870 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:58:01,871 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:58:01,872 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:58:01,873 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:58:01,876 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:58:01,878 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:58:01,879 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:58:01,880 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:58:01,880 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:58:01,881 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:58:01,882 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:58:01,883 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:58:01,884 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:58:01,885 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:58:01,887 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:58:01,889 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:58:01,891 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:58:01,892 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:58:01,894 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:58:01,898 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 14:58:01,914 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:58:01,914 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:58:01,917 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:58:01,918 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:58:01,919 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:58:01,951 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:58:01,953 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:58:01,953 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:58:01,954 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:58:01,954 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:58:01,954 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:58:01,954 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:58:01,954 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:58:01,955 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:58:01,955 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:58:01,955 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:58:01,956 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:58:01,956 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:58:01,957 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:58:01,957 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:58:01,957 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:58:01,957 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:58:01,957 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:58:01,959 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:58:01,959 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:58:01,959 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:58:01,959 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:58:01,960 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:58:01,960 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:58:01,960 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:58:01,960 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:58:01,961 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:58:01,961 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:58:01,961 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:58:01,961 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:58:01,961 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:58:01,962 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:58:01,962 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:58:01,962 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:58:02,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:58:02,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:58:02,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:58:02,052 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:58:02,053 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:58:02,053 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label06_true-unreach-call_false-termination.c [2018-11-07 14:58:02,116 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace26c711/6ea2f7fd332544e4a7b349174014818c/FLAG75dc34d0e [2018-11-07 14:58:02,714 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:58:02,715 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label06_true-unreach-call_false-termination.c [2018-11-07 14:58:02,732 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace26c711/6ea2f7fd332544e4a7b349174014818c/FLAG75dc34d0e [2018-11-07 14:58:02,754 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ace26c711/6ea2f7fd332544e4a7b349174014818c [2018-11-07 14:58:02,768 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:58:02,770 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:58:02,771 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:58:02,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:58:02,776 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:58:02,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:58:02" (1/1) ... [2018-11-07 14:58:02,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e3b70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:02, skipping insertion in model container [2018-11-07 14:58:02,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:58:02" (1/1) ... [2018-11-07 14:58:02,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:58:02,874 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:58:03,394 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:58:03,399 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:58:03,539 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:58:03,558 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:58:03,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03 WrapperNode [2018-11-07 14:58:03,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:58:03,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:58:03,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:58:03,560 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:58:03,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (1/1) ... [2018-11-07 14:58:03,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (1/1) ... [2018-11-07 14:58:03,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:58:03,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:58:03,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:58:03,717 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:58:03,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (1/1) ... [2018-11-07 14:58:03,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (1/1) ... [2018-11-07 14:58:03,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (1/1) ... [2018-11-07 14:58:03,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (1/1) ... [2018-11-07 14:58:03,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (1/1) ... [2018-11-07 14:58:03,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (1/1) ... [2018-11-07 14:58:03,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (1/1) ... [2018-11-07 14:58:03,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:58:03,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:58:03,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:58:03,838 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:58:03,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (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 14:58:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:58:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:58:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:58:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:58:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:58:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:58:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:58:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:58:03,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:58:07,473 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:58:07,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:58:07 BoogieIcfgContainer [2018-11-07 14:58:07,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:58:07,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:58:07,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:58:07,478 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:58:07,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:58:02" (1/3) ... [2018-11-07 14:58:07,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5662e707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:58:07, skipping insertion in model container [2018-11-07 14:58:07,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:58:03" (2/3) ... [2018-11-07 14:58:07,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5662e707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:58:07, skipping insertion in model container [2018-11-07 14:58:07,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:58:07" (3/3) ... [2018-11-07 14:58:07,483 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label06_true-unreach-call_false-termination.c [2018-11-07 14:58:07,494 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:58:07,502 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:58:07,520 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:58:07,559 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:58:07,559 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:58:07,559 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:58:07,560 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:58:07,560 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:58:07,560 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:58:07,560 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:58:07,560 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:58:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 14:58:07,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-07 14:58:07,599 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:58:07,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:58:07,607 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:58:07,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:58:07,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1354853180, now seen corresponding path program 1 times [2018-11-07 14:58:07,622 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:58:07,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:58:07,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:58:07,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:58:07,679 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:58:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:58:08,165 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 14:58:08,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:58:08,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:58:08,168 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:58:08,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:58:08,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:58:08,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:58:08,201 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 14:58:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:58:11,257 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-11-07 14:58:11,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:58:11,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2018-11-07 14:58:11,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:58:11,282 INFO L225 Difference]: With dead ends: 894 [2018-11-07 14:58:11,282 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 14:58:11,291 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 14:58:11,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 14:58:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-11-07 14:58:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 14:58:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-11-07 14:58:11,381 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 68 [2018-11-07 14:58:11,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:58:11,382 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-11-07 14:58:11,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:58:11,382 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-11-07 14:58:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-07 14:58:11,392 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:58:11,392 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, 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] [2018-11-07 14:58:11,392 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:58:11,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:58:11,393 INFO L82 PathProgramCache]: Analyzing trace with hash -623503772, now seen corresponding path program 1 times [2018-11-07 14:58:11,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:58:11,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:58:11,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:58:11,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:58:11,395 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:58:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:58:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:58:11,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:58:11,762 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:58:11,762 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:58:11,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:58:11,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:58:11,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:58:11,766 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-11-07 14:58:14,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:58:14,735 INFO L93 Difference]: Finished difference Result 1594 states and 2540 transitions. [2018-11-07 14:58:14,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:58:14,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-11-07 14:58:14,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:58:14,754 INFO L225 Difference]: With dead ends: 1594 [2018-11-07 14:58:14,755 INFO L226 Difference]: Without dead ends: 1166 [2018-11-07 14:58:14,761 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 14:58:14,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2018-11-07 14:58:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2018-11-07 14:58:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1166 states. [2018-11-07 14:58:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1711 transitions. [2018-11-07 14:58:14,844 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1711 transitions. Word has length 152 [2018-11-07 14:58:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:58:14,845 INFO L480 AbstractCegarLoop]: Abstraction has 1166 states and 1711 transitions. [2018-11-07 14:58:14,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:58:14,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1711 transitions. [2018-11-07 14:58:14,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 14:58:14,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:58:14,861 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:58:14,862 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:58:14,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:58:14,862 INFO L82 PathProgramCache]: Analyzing trace with hash -392846149, now seen corresponding path program 1 times [2018-11-07 14:58:14,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:58:14,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:58:14,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:58:14,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:58:14,865 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:58:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:58:15,236 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:58:15,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:58:15,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:58:15,237 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:58:15,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:58:15,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:58:15,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:58:15,238 INFO L87 Difference]: Start difference. First operand 1166 states and 1711 transitions. Second operand 6 states. [2018-11-07 14:58:18,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:58:18,340 INFO L93 Difference]: Finished difference Result 3114 states and 4807 transitions. [2018-11-07 14:58:18,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:58:18,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-11-07 14:58:18,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:58:18,363 INFO L225 Difference]: With dead ends: 3114 [2018-11-07 14:58:18,363 INFO L226 Difference]: Without dead ends: 1954 [2018-11-07 14:58:18,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:58:18,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2018-11-07 14:58:18,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1918. [2018-11-07 14:58:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2018-11-07 14:58:18,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2787 transitions. [2018-11-07 14:58:18,466 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2787 transitions. Word has length 209 [2018-11-07 14:58:18,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:58:18,467 INFO L480 AbstractCegarLoop]: Abstraction has 1918 states and 2787 transitions. [2018-11-07 14:58:18,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:58:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2787 transitions. [2018-11-07 14:58:18,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 14:58:18,475 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:58:18,476 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, 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, 1, 1, 1, 1, 1, 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 14:58:18,476 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:58:18,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:58:18,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1160644629, now seen corresponding path program 1 times [2018-11-07 14:58:18,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:58:18,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:58:18,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:58:18,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:58:18,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:58:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:58:18,763 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:58:18,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:58:18,764 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:58:18,765 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-07 14:58:18,767 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], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 14:58:18,813 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:58:18,814 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:58:19,397 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:58:19,399 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 14:58:19,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:58:19,447 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:58:20,142 INFO L227 lantSequenceWeakener]: Weakened 232 states. On average, predicates are now at 78.24% of their original sizes. [2018-11-07 14:58:20,143 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:58:20,522 INFO L415 sIntCurrentIteration]: We unified 240 AI predicates to 240 [2018-11-07 14:58:20,523 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:58:20,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:58:20,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 14:58:20,525 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:58:20,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:58:20,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:58:20,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:58:20,526 INFO L87 Difference]: Start difference. First operand 1918 states and 2787 transitions. Second operand 7 states. [2018-11-07 14:58:22,714 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:00:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:00:59,383 INFO L93 Difference]: Finished difference Result 4015 states and 5797 transitions. [2018-11-07 15:00:59,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:00:59,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2018-11-07 15:00:59,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:00:59,396 INFO L225 Difference]: With dead ends: 4015 [2018-11-07 15:00:59,396 INFO L226 Difference]: Without dead ends: 2103 [2018-11-07 15:00:59,406 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 241 GetRequests, 235 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 15:00:59,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2103 states. [2018-11-07 15:00:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2103 to 2101. [2018-11-07 15:00:59,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2101 states. [2018-11-07 15:00:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2101 states to 2101 states and 2978 transitions. [2018-11-07 15:00:59,468 INFO L78 Accepts]: Start accepts. Automaton has 2101 states and 2978 transitions. Word has length 241 [2018-11-07 15:00:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:00:59,468 INFO L480 AbstractCegarLoop]: Abstraction has 2101 states and 2978 transitions. [2018-11-07 15:00:59,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 15:00:59,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2101 states and 2978 transitions. [2018-11-07 15:00:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-11-07 15:00:59,479 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:00:59,479 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, 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, 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] [2018-11-07 15:00:59,480 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:00:59,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:00:59,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1825997348, now seen corresponding path program 1 times [2018-11-07 15:00:59,480 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:00:59,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:00:59,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:00:59,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:00:59,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:00:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:00:59,984 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 15:01:00,185 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 15:01:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 271 proven. 146 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:01:00,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:01:00,870 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:01:00,870 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 327 with the following transitions: [2018-11-07 15:01:00,871 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], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 15:01:00,877 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:01:00,878 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:01:01,054 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:01:01,055 INFO L272 AbstractInterpreter]: Visited 105 different actions 203 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 15:01:01,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:01:01,092 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:01:01,659 INFO L227 lantSequenceWeakener]: Weakened 135 states. On average, predicates are now at 78.28% of their original sizes. [2018-11-07 15:01:01,659 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:01:02,864 INFO L415 sIntCurrentIteration]: We unified 325 AI predicates to 325 [2018-11-07 15:01:02,864 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:01:02,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:01:02,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [12] total 35 [2018-11-07 15:01:02,865 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:01:02,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 15:01:02,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 15:01:02,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2018-11-07 15:01:02,868 INFO L87 Difference]: Start difference. First operand 2101 states and 2978 transitions. Second operand 25 states. [2018-11-07 15:01:11,774 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 15:02:14,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 15:02:14,077 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 15:02:14,082 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 15:02:14,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:02:14 BoogieIcfgContainer [2018-11-07 15:02:14,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 15:02:14,084 INFO L168 Benchmark]: Toolchain (without parser) took 251315.13 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 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 469.2 MB. Max. memory is 7.1 GB. [2018-11-07 15:02:14,085 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 15:02:14,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 788.05 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 15:02:14,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 157.24 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 711.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2018-11-07 15:02:14,088 INFO L168 Benchmark]: Boogie Preprocessor took 120.69 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 15:02:14,089 INFO L168 Benchmark]: RCFGBuilder took 3635.70 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.8 MB). Peak memory consumption was 134.8 MB. Max. memory is 7.1 GB. [2018-11-07 15:02:14,090 INFO L168 Benchmark]: TraceAbstraction took 246608.36 ms. Allocated memory was 2.2 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 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 377.2 MB. Max. memory is 7.1 GB. [2018-11-07 15:02:14,095 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 788.05 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 157.24 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 711.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.4 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.69 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3635.70 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.8 MB). Peak memory consumption was 134.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246608.36 ms. Allocated memory was 2.2 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 3.6 GB in the end (delta: -1.6 GB). Peak memory consumption was 377.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was constructing difference of abstraction (2101states) and FLOYD_HOARE automaton (currently 22 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (1146 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 246.5s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 239.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 678 SDtfs, 4314 SDslu, 615 SDs, 0 SdLazy, 5250 SolverSat, 1251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 217.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 595 GetRequests, 546 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2101occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9972312694359637 AbsIntWeakeningRatio, 0.10265486725663717 AbsIntAvgWeakeningVarsNumRemoved, 15.585840707964602 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 237 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 996 NumberOfCodeBlocks, 996 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 991 ConstructedInterpolants, 0 QuantifiedInterpolants, 1797619 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 595/743 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown