java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:30:01,880 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:30:01,883 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:30:01,900 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:30:01,901 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:30:01,902 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:30:01,905 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:30:01,908 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:30:01,911 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:30:01,913 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:30:01,915 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:30:01,915 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:30:01,916 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:30:01,919 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:30:01,921 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:30:01,921 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:30:01,931 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:30:01,932 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:30:01,934 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:30:01,938 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:30:01,939 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:30:01,941 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:30:01,944 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:30:01,960 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 23:30:01,988 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:30:01,988 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:30:01,989 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:30:01,989 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:30:01,990 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:30:01,990 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:30:01,991 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:30:01,991 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:30:01,991 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:30:01,991 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:30:01,991 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:30:01,992 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:30:01,992 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:30:01,993 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:30:01,994 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:30:01,994 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:30:01,994 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:30:01,994 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:30:01,994 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:30:01,996 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:30:01,996 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:30:01,996 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:30:01,996 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:30:01,997 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:30:01,997 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:30:01,997 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:30:01,997 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:30:01,997 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:30:01,998 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:30:01,998 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:30:01,998 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:30:01,999 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:30:01,999 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:30:01,999 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:30:02,082 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:30:02,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:30:02,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:30:02,107 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:30:02,107 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:30:02,108 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label53_true-unreach-call_false-termination.c [2018-10-23 23:30:02,178 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d63888cc/ff71c4925ee04eb3b6b45d1497fae598/FLAG0092a8270 [2018-10-23 23:30:02,761 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:30:02,764 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label53_true-unreach-call_false-termination.c [2018-10-23 23:30:02,783 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d63888cc/ff71c4925ee04eb3b6b45d1497fae598/FLAG0092a8270 [2018-10-23 23:30:02,804 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5d63888cc/ff71c4925ee04eb3b6b45d1497fae598 [2018-10-23 23:30:02,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:30:02,821 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:30:02,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:30:02,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:30:02,828 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:30:02,829 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:30:02" (1/1) ... [2018-10-23 23:30:02,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a1f76d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:02, skipping insertion in model container [2018-10-23 23:30:02,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:30:02" (1/1) ... [2018-10-23 23:30:02,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:30:02,913 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:30:03,401 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:30:03,406 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:30:03,539 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:30:03,561 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:30:03,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03 WrapperNode [2018-10-23 23:30:03,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:30:03,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:30:03,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:30:03,563 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:30:03,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (1/1) ... [2018-10-23 23:30:03,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (1/1) ... [2018-10-23 23:30:03,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:30:03,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:30:03,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:30:03,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:30:03,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (1/1) ... [2018-10-23 23:30:03,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (1/1) ... [2018-10-23 23:30:03,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (1/1) ... [2018-10-23 23:30:03,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (1/1) ... [2018-10-23 23:30:03,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (1/1) ... [2018-10-23 23:30:03,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (1/1) ... [2018-10-23 23:30:03,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (1/1) ... [2018-10-23 23:30:03,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:30:03,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:30:03,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:30:03,813 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:30:03,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:30:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:30:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:30:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:30:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:30:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:30:03,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:30:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:30:03,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:30:07,786 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:30:07,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:30:07 BoogieIcfgContainer [2018-10-23 23:30:07,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:30:07,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:30:07,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:30:07,803 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:30:07,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:30:02" (1/3) ... [2018-10-23 23:30:07,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ddec11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:30:07, skipping insertion in model container [2018-10-23 23:30:07,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:30:03" (2/3) ... [2018-10-23 23:30:07,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ddec11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:30:07, skipping insertion in model container [2018-10-23 23:30:07,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:30:07" (3/3) ... [2018-10-23 23:30:07,809 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label53_true-unreach-call_false-termination.c [2018-10-23 23:30:07,821 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:30:07,834 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:30:07,853 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:30:07,894 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:30:07,894 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:30:07,894 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:30:07,895 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:30:07,895 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:30:07,895 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:30:07,895 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:30:07,895 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:30:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:30:07,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-23 23:30:07,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:30:07,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:30:07,947 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:30:07,953 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:30:07,954 INFO L82 PathProgramCache]: Analyzing trace with hash 151697799, now seen corresponding path program 1 times [2018-10-23 23:30:07,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:30:08,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:08,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:30:08,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:08,017 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:30:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:30:08,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:30:08,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:30:08,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:30:08,701 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:30:08,708 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:30:08,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:30:08,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:30:08,732 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:30:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:30:10,386 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-23 23:30:10,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:30:10,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2018-10-23 23:30:10,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:30:10,409 INFO L225 Difference]: With dead ends: 621 [2018-10-23 23:30:10,409 INFO L226 Difference]: Without dead ends: 382 [2018-10-23 23:30:10,416 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:30:10,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-23 23:30:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-23 23:30:10,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-23 23:30:10,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-23 23:30:10,507 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 145 [2018-10-23 23:30:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:30:10,508 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-23 23:30:10,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:30:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-23 23:30:10,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-23 23:30:10,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:30:10,516 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:30:10,517 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:30:10,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:30:10,517 INFO L82 PathProgramCache]: Analyzing trace with hash 627656218, now seen corresponding path program 1 times [2018-10-23 23:30:10,517 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:30:10,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:10,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:30:10,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:10,519 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:30:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:30:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:30:10,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:30:10,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:30:10,965 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:30:10,967 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:30:10,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:30:10,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:30:10,968 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 5 states. [2018-10-23 23:30:12,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:30:12,666 INFO L93 Difference]: Finished difference Result 903 states and 1497 transitions. [2018-10-23 23:30:12,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:30:12,668 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2018-10-23 23:30:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:30:12,672 INFO L225 Difference]: With dead ends: 903 [2018-10-23 23:30:12,673 INFO L226 Difference]: Without dead ends: 381 [2018-10-23 23:30:12,677 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:30:12,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-10-23 23:30:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-10-23 23:30:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-10-23 23:30:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 602 transitions. [2018-10-23 23:30:12,702 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 602 transitions. Word has length 154 [2018-10-23 23:30:12,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:30:12,703 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 602 transitions. [2018-10-23 23:30:12,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:30:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 602 transitions. [2018-10-23 23:30:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-23 23:30:12,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:30:12,708 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:30:12,708 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:30:12,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:30:12,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1014173274, now seen corresponding path program 1 times [2018-10-23 23:30:12,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:30:12,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:12,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:30:12,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:12,711 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:30:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:30:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:30:13,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:30:13,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:30:13,221 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:30:13,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:30:13,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:30:13,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:30:13,222 INFO L87 Difference]: Start difference. First operand 381 states and 602 transitions. Second operand 5 states. [2018-10-23 23:30:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:30:14,987 INFO L93 Difference]: Finished difference Result 901 states and 1482 transitions. [2018-10-23 23:30:14,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:30:14,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-10-23 23:30:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:30:14,991 INFO L225 Difference]: With dead ends: 901 [2018-10-23 23:30:14,992 INFO L226 Difference]: Without dead ends: 380 [2018-10-23 23:30:14,994 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:30:14,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-10-23 23:30:15,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-10-23 23:30:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-23 23:30:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 594 transitions. [2018-10-23 23:30:15,012 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 594 transitions. Word has length 160 [2018-10-23 23:30:15,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:30:15,013 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 594 transitions. [2018-10-23 23:30:15,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:30:15,013 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 594 transitions. [2018-10-23 23:30:15,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-10-23 23:30:15,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:30:15,016 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:30:15,017 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:30:15,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:30:15,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1544846205, now seen corresponding path program 1 times [2018-10-23 23:30:15,017 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:30:15,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:15,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:30:15,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:15,019 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:30:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:30:15,256 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:30:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:30:15,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:30:15,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:30:15,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:30:15,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:30:15,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:30:15,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:30:15,448 INFO L87 Difference]: Start difference. First operand 380 states and 594 transitions. Second operand 6 states. [2018-10-23 23:30:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:30:19,270 INFO L93 Difference]: Finished difference Result 1193 states and 1942 transitions. [2018-10-23 23:30:19,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:30:19,273 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 168 [2018-10-23 23:30:19,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:30:19,280 INFO L225 Difference]: With dead ends: 1193 [2018-10-23 23:30:19,280 INFO L226 Difference]: Without dead ends: 819 [2018-10-23 23:30:19,283 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:30:19,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-10-23 23:30:19,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 807. [2018-10-23 23:30:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-10-23 23:30:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1208 transitions. [2018-10-23 23:30:19,320 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1208 transitions. Word has length 168 [2018-10-23 23:30:19,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:30:19,320 INFO L481 AbstractCegarLoop]: Abstraction has 807 states and 1208 transitions. [2018-10-23 23:30:19,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:30:19,321 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1208 transitions. [2018-10-23 23:30:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-23 23:30:19,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:30:19,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:30:19,326 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:30:19,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:30:19,326 INFO L82 PathProgramCache]: Analyzing trace with hash -869251583, now seen corresponding path program 1 times [2018-10-23 23:30:19,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:30:19,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:19,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:30:19,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:19,328 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:30:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:30:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:30:19,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:30:19,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:30:19,620 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:30:19,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:30:19,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:30:19,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:30:19,621 INFO L87 Difference]: Start difference. First operand 807 states and 1208 transitions. Second operand 5 states. [2018-10-23 23:30:20,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:30:20,683 INFO L93 Difference]: Finished difference Result 1753 states and 2669 transitions. [2018-10-23 23:30:20,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:30:20,692 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2018-10-23 23:30:20,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:30:20,707 INFO L225 Difference]: With dead ends: 1753 [2018-10-23 23:30:20,707 INFO L226 Difference]: Without dead ends: 804 [2018-10-23 23:30:20,713 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:30:20,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2018-10-23 23:30:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 804. [2018-10-23 23:30:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2018-10-23 23:30:20,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1190 transitions. [2018-10-23 23:30:20,745 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1190 transitions. Word has length 170 [2018-10-23 23:30:20,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:30:20,745 INFO L481 AbstractCegarLoop]: Abstraction has 804 states and 1190 transitions. [2018-10-23 23:30:20,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:30:20,745 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1190 transitions. [2018-10-23 23:30:20,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-23 23:30:20,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:30:20,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:30:20,750 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:30:20,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:30:20,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1524482181, now seen corresponding path program 1 times [2018-10-23 23:30:20,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:30:20,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:20,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:30:20,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:20,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:30:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:30:21,207 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 23:30:21,452 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 23:30:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:30:21,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:30:21,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:30:21,595 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:30:21,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:30:21,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:30:21,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:30:21,596 INFO L87 Difference]: Start difference. First operand 804 states and 1190 transitions. Second operand 5 states. [2018-10-23 23:30:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:30:22,612 INFO L93 Difference]: Finished difference Result 1747 states and 2630 transitions. [2018-10-23 23:30:22,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:30:22,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2018-10-23 23:30:22,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:30:22,621 INFO L225 Difference]: With dead ends: 1747 [2018-10-23 23:30:22,622 INFO L226 Difference]: Without dead ends: 801 [2018-10-23 23:30:22,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:30:22,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2018-10-23 23:30:22,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 801. [2018-10-23 23:30:22,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2018-10-23 23:30:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1169 transitions. [2018-10-23 23:30:22,649 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1169 transitions. Word has length 172 [2018-10-23 23:30:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:30:22,650 INFO L481 AbstractCegarLoop]: Abstraction has 801 states and 1169 transitions. [2018-10-23 23:30:22,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:30:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1169 transitions. [2018-10-23 23:30:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-23 23:30:22,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:30:22,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:30:22,655 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:30:22,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:30:22,655 INFO L82 PathProgramCache]: Analyzing trace with hash 406701453, now seen corresponding path program 1 times [2018-10-23 23:30:22,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:30:22,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:22,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:30:22,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:22,657 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:30:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:30:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:30:22,832 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:30:22,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:30:22,832 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:30:22,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:30:22,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:30:22,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:30:22,834 INFO L87 Difference]: Start difference. First operand 801 states and 1169 transitions. Second operand 6 states. [2018-10-23 23:30:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:30:24,281 INFO L93 Difference]: Finished difference Result 2381 states and 3621 transitions. [2018-10-23 23:30:24,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:30:24,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-10-23 23:30:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:30:24,292 INFO L225 Difference]: With dead ends: 2381 [2018-10-23 23:30:24,292 INFO L226 Difference]: Without dead ends: 1586 [2018-10-23 23:30:24,297 INFO L605 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 [2018-10-23 23:30:24,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2018-10-23 23:30:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1558. [2018-10-23 23:30:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2018-10-23 23:30:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2225 transitions. [2018-10-23 23:30:24,352 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2225 transitions. Word has length 176 [2018-10-23 23:30:24,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:30:24,353 INFO L481 AbstractCegarLoop]: Abstraction has 1558 states and 2225 transitions. [2018-10-23 23:30:24,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:30:24,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2225 transitions. [2018-10-23 23:30:24,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-23 23:30:24,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:30:24,363 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:30:24,363 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:30:24,363 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:30:24,363 INFO L82 PathProgramCache]: Analyzing trace with hash 337466047, now seen corresponding path program 1 times [2018-10-23 23:30:24,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:30:24,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:24,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:30:24,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:30:24,365 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:30:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:30:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:30:24,678 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:30:24,678 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:30:24,679 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-10-23 23:30:24,681 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [107], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [763], [771], [779], [787], [795], [803], [811], [819], [827], [831], [833], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:30:24,759 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:30:24,760 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:30:55,132 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:30:55,133 INFO L272 AbstractInterpreter]: Visited 149 different actions 292 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-23 23:30:55,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:30:55,177 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:31:03,309 INFO L232 lantSequenceWeakener]: Weakened 73 states. On average, predicates are now at 82.91% of their original sizes. [2018-10-23 23:31:03,310 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:32:40,128 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:32:40,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:32:40,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-23 23:32:40,130 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:32:40,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-23 23:32:40,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-23 23:32:40,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2018-10-23 23:32:40,132 INFO L87 Difference]: Start difference. First operand 1558 states and 2225 transitions. Second operand 22 states. Received shutdown request... [2018-10-23 23:34:14,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-23 23:34:14,953 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:34:14,959 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:34:14,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:34:14 BoogieIcfgContainer [2018-10-23 23:34:14,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:34:14,960 INFO L168 Benchmark]: Toolchain (without parser) took 252141.36 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -117.9 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-23 23:34:14,962 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. [2018-10-23 23:34:14,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.10 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. [2018-10-23 23:34:14,963 INFO L168 Benchmark]: Boogie Procedure Inliner took 185.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-23 23:34:14,964 INFO L168 Benchmark]: Boogie Preprocessor took 63.70 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. [2018-10-23 23:34:14,964 INFO L168 Benchmark]: RCFGBuilder took 3984.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 115.1 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. [2018-10-23 23:34:14,965 INFO L168 Benchmark]: TraceAbstraction took 247160.96 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 563.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 23:34:14,969 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 740.10 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 185.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.70 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 3984.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 115.1 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 247160.96 ms. Allocated memory was 2.3 GB in the beginning and 3.5 GB in the end (delta: 1.2 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 563.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 586]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 586). Cancelled while BasicCegarLoop was constructing difference of abstraction (1558states) and FLOYD_HOARE automaton (currently 22 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (504 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 247.0s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 107.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 902 SDtfs, 4462 SDslu, 708 SDs, 0 SdLazy, 5508 SolverSat, 1116 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 55.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 272 GetRequests, 195 SyntacticMatches, 23 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 102.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1558occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 30.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.995590327169275 AbsIntWeakeningRatio, 0.15714285714285714 AbsIntAvgWeakeningVarsNumRemoved, 425.2047619047619 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 1356 NumberOfCodeBlocks, 1356 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1348 ConstructedInterpolants, 0 QuantifiedInterpolants, 1428036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 201/203 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown