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_label08_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:22:15,865 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:22:15,867 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:22:15,879 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:22:15,880 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:22:15,881 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:22:15,882 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:22:15,884 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:22:15,885 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:22:15,886 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:22:15,887 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:22:15,887 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:22:15,888 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:22:15,889 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:22:15,890 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:22:15,891 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:22:15,892 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:22:15,894 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:22:15,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:22:15,898 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:22:15,899 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:22:15,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:22:15,903 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:22:15,912 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 [2018-10-24 19:22:15,928 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:22:15,929 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:22:15,929 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:22:15,930 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:22:15,930 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:22:15,930 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:22:15,930 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:22:15,931 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:22:15,931 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:22:15,931 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:22:15,931 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:22:15,931 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:22:15,932 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:22:15,932 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:22:15,933 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:22:15,933 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:22:15,933 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:22:15,933 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:22:15,933 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:22:15,934 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:22:15,934 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:22:15,934 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:22:15,934 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:22:15,934 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:22:15,934 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:22:15,935 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:22:15,935 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:22:15,935 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:22:15,935 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:22:15,936 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:22:15,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:22:15,936 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:22:15,936 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:22:15,936 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:22:15,982 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:22:15,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:22:16,001 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:22:16,003 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:22:16,004 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:22:16,005 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label08_true-unreach-call_false-termination.c [2018-10-24 19:22:16,085 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b854f0ada/b9ce29093f1e4210a97fb576215ed827/FLAG664843b54 [2018-10-24 19:22:16,755 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:22:16,756 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label08_true-unreach-call_false-termination.c [2018-10-24 19:22:16,782 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b854f0ada/b9ce29093f1e4210a97fb576215ed827/FLAG664843b54 [2018-10-24 19:22:16,802 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b854f0ada/b9ce29093f1e4210a97fb576215ed827 [2018-10-24 19:22:16,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:22:16,814 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:22:16,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:22:16,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:22:16,820 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:22:16,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:22:16" (1/1) ... [2018-10-24 19:22:16,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f637f1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:16, skipping insertion in model container [2018-10-24 19:22:16,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:22:16" (1/1) ... [2018-10-24 19:22:16,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:22:16,915 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:22:17,402 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:22:17,411 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:22:17,555 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:22:17,574 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:22:17,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17 WrapperNode [2018-10-24 19:22:17,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:22:17,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:22:17,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:22:17,576 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:22:17,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (1/1) ... [2018-10-24 19:22:17,605 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (1/1) ... [2018-10-24 19:22:17,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:22:17,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:22:17,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:22:17,762 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:22:17,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (1/1) ... [2018-10-24 19:22:17,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (1/1) ... [2018-10-24 19:22:17,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (1/1) ... [2018-10-24 19:22:17,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (1/1) ... [2018-10-24 19:22:17,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (1/1) ... [2018-10-24 19:22:17,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (1/1) ... [2018-10-24 19:22:17,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (1/1) ... [2018-10-24 19:22:17,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:22:17,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:22:17,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:22:17,855 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:22:17,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (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 [2018-10-24 19:22:17,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:22:17,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:22:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:22:17,964 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:22:17,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:22:17,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:22:17,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:22:17,965 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:22:21,667 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:22:21,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:22:21 BoogieIcfgContainer [2018-10-24 19:22:21,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:22:21,672 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:22:21,672 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:22:21,677 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:22:21,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:22:16" (1/3) ... [2018-10-24 19:22:21,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b154cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:22:21, skipping insertion in model container [2018-10-24 19:22:21,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:22:17" (2/3) ... [2018-10-24 19:22:21,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b154cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:22:21, skipping insertion in model container [2018-10-24 19:22:21,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:22:21" (3/3) ... [2018-10-24 19:22:21,682 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label08_true-unreach-call_false-termination.c [2018-10-24 19:22:21,692 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:22:21,702 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:22:21,721 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:22:21,764 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:22:21,765 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:22:21,765 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:22:21,765 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:22:21,765 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:22:21,765 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:22:21,766 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:22:21,766 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:22:21,799 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:22:21,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 19:22:21,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:22:21,819 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] [2018-10-24 19:22:21,822 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:22:21,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:22:21,829 INFO L82 PathProgramCache]: Analyzing trace with hash 215760967, now seen corresponding path program 1 times [2018-10-24 19:22:21,832 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:22:21,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:21,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:22:21,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:21,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:22:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:22:22,482 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:22:22,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:22:22,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:22:22,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:22:22,641 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:22:22,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:22:22,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:22:22,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:22:22,670 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:22:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:22:23,933 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-24 19:22:23,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:22:23,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2018-10-24 19:22:23,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:22:23,958 INFO L225 Difference]: With dead ends: 621 [2018-10-24 19:22:23,958 INFO L226 Difference]: Without dead ends: 382 [2018-10-24 19:22:23,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:22:23,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-24 19:22:24,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-24 19:22:24,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-24 19:22:24,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-24 19:22:24,070 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 129 [2018-10-24 19:22:24,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:22:24,071 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-24 19:22:24,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:22:24,072 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-24 19:22:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-24 19:22:24,086 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:22:24,087 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] [2018-10-24 19:22:24,087 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:22:24,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:22:24,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1444172506, now seen corresponding path program 1 times [2018-10-24 19:22:24,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:22:24,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:24,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:22:24,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:24,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:22:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:22:24,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:22:24,612 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:22:24,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:22:24,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:22:24,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:22:24,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:22:24,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:22:24,616 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 5 states. [2018-10-24 19:22:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:22:26,075 INFO L93 Difference]: Finished difference Result 903 states and 1497 transitions. [2018-10-24 19:22:26,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:22:26,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-10-24 19:22:26,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:22:26,083 INFO L225 Difference]: With dead ends: 903 [2018-10-24 19:22:26,084 INFO L226 Difference]: Without dead ends: 381 [2018-10-24 19:22:26,091 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:22:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-10-24 19:22:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-10-24 19:22:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-10-24 19:22:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 602 transitions. [2018-10-24 19:22:26,117 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 602 transitions. Word has length 138 [2018-10-24 19:22:26,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:22:26,117 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 602 transitions. [2018-10-24 19:22:26,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:22:26,118 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 602 transitions. [2018-10-24 19:22:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 19:22:26,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:22:26,122 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] [2018-10-24 19:22:26,122 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:22:26,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:22:26,123 INFO L82 PathProgramCache]: Analyzing trace with hash 708351590, now seen corresponding path program 1 times [2018-10-24 19:22:26,123 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:22:26,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:26,125 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:22:26,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:26,125 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:22:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:22:26,668 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:22:26,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:22:26,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:22:26,669 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:22:26,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:22:26,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:22:26,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:22:26,671 INFO L87 Difference]: Start difference. First operand 381 states and 602 transitions. Second operand 5 states. [2018-10-24 19:22:28,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:22:28,682 INFO L93 Difference]: Finished difference Result 901 states and 1482 transitions. [2018-10-24 19:22:28,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:22:28,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-10-24 19:22:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:22:28,686 INFO L225 Difference]: With dead ends: 901 [2018-10-24 19:22:28,686 INFO L226 Difference]: Without dead ends: 380 [2018-10-24 19:22:28,689 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:22:28,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-10-24 19:22:28,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-10-24 19:22:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-24 19:22:28,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 594 transitions. [2018-10-24 19:22:28,707 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 594 transitions. Word has length 144 [2018-10-24 19:22:28,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:22:28,707 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 594 transitions. [2018-10-24 19:22:28,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:22:28,707 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 594 transitions. [2018-10-24 19:22:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-10-24 19:22:28,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:22:28,710 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] [2018-10-24 19:22:28,711 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:22:28,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:22:28,711 INFO L82 PathProgramCache]: Analyzing trace with hash 421834301, now seen corresponding path program 1 times [2018-10-24 19:22:28,711 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:22:28,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:28,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:22:28,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:28,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:22:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:22:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:22:28,868 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:22:28,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:22:28,868 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:22:28,869 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:22:28,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:22:28,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:22:28,870 INFO L87 Difference]: Start difference. First operand 380 states and 594 transitions. Second operand 6 states. [2018-10-24 19:22:31,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:22:31,464 INFO L93 Difference]: Finished difference Result 1193 states and 1942 transitions. [2018-10-24 19:22:31,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:22:31,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 152 [2018-10-24 19:22:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:22:31,471 INFO L225 Difference]: With dead ends: 1193 [2018-10-24 19:22:31,471 INFO L226 Difference]: Without dead ends: 819 [2018-10-24 19:22:31,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:22:31,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-10-24 19:22:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 807. [2018-10-24 19:22:31,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-10-24 19:22:31,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1208 transitions. [2018-10-24 19:22:31,513 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1208 transitions. Word has length 152 [2018-10-24 19:22:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:22:31,513 INFO L481 AbstractCegarLoop]: Abstraction has 807 states and 1208 transitions. [2018-10-24 19:22:31,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:22:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1208 transitions. [2018-10-24 19:22:31,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 19:22:31,518 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:22:31,518 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] [2018-10-24 19:22:31,518 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:22:31,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:22:31,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2056126657, now seen corresponding path program 1 times [2018-10-24 19:22:31,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:22:31,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:31,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:22:31,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:31,520 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:22:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:22:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:22:31,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:22:31,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:22:31,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:22:31,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:22:31,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:22:31,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:22:31,792 INFO L87 Difference]: Start difference. First operand 807 states and 1208 transitions. Second operand 5 states. [2018-10-24 19:22:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:22:32,940 INFO L93 Difference]: Finished difference Result 1753 states and 2669 transitions. [2018-10-24 19:22:32,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:22:32,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2018-10-24 19:22:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:22:32,946 INFO L225 Difference]: With dead ends: 1753 [2018-10-24 19:22:32,947 INFO L226 Difference]: Without dead ends: 804 [2018-10-24 19:22:32,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:22:32,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2018-10-24 19:22:32,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 804. [2018-10-24 19:22:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2018-10-24 19:22:32,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1190 transitions. [2018-10-24 19:22:32,975 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1190 transitions. Word has length 154 [2018-10-24 19:22:32,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:22:32,976 INFO L481 AbstractCegarLoop]: Abstraction has 804 states and 1190 transitions. [2018-10-24 19:22:32,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:22:32,976 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1190 transitions. [2018-10-24 19:22:32,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 19:22:32,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:22:32,980 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] [2018-10-24 19:22:32,980 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:22:32,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:22:32,981 INFO L82 PathProgramCache]: Analyzing trace with hash 870908741, now seen corresponding path program 1 times [2018-10-24 19:22:32,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:22:32,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:32,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:22:32,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:32,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:22:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:22:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:22:33,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:22:33,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:22:33,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:22:33,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:22:33,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:22:33,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:22:33,290 INFO L87 Difference]: Start difference. First operand 804 states and 1190 transitions. Second operand 5 states. [2018-10-24 19:22:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:22:34,237 INFO L93 Difference]: Finished difference Result 1747 states and 2630 transitions. [2018-10-24 19:22:34,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:22:34,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2018-10-24 19:22:34,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:22:34,243 INFO L225 Difference]: With dead ends: 1747 [2018-10-24 19:22:34,243 INFO L226 Difference]: Without dead ends: 801 [2018-10-24 19:22:34,247 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:22:34,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2018-10-24 19:22:34,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 801. [2018-10-24 19:22:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2018-10-24 19:22:34,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1169 transitions. [2018-10-24 19:22:34,269 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1169 transitions. Word has length 156 [2018-10-24 19:22:34,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:22:34,269 INFO L481 AbstractCegarLoop]: Abstraction has 801 states and 1169 transitions. [2018-10-24 19:22:34,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:22:34,270 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1169 transitions. [2018-10-24 19:22:34,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 19:22:34,273 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:22:34,273 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] [2018-10-24 19:22:34,274 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:22:34,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:22:34,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1832642483, now seen corresponding path program 1 times [2018-10-24 19:22:34,274 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:22:34,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:34,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:22:34,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:34,276 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:22:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:22:34,403 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:22:34,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:22:34,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:22:34,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:22:34,404 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:22:34,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:22:34,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:22:34,405 INFO L87 Difference]: Start difference. First operand 801 states and 1169 transitions. Second operand 6 states. [2018-10-24 19:22:35,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:22:35,870 INFO L93 Difference]: Finished difference Result 2381 states and 3621 transitions. [2018-10-24 19:22:35,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:22:35,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-10-24 19:22:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:22:35,891 INFO L225 Difference]: With dead ends: 2381 [2018-10-24 19:22:35,892 INFO L226 Difference]: Without dead ends: 1586 [2018-10-24 19:22:35,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:22:35,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2018-10-24 19:22:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1558. [2018-10-24 19:22:35,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2018-10-24 19:22:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2225 transitions. [2018-10-24 19:22:35,948 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2225 transitions. Word has length 160 [2018-10-24 19:22:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:22:35,949 INFO L481 AbstractCegarLoop]: Abstraction has 1558 states and 2225 transitions. [2018-10-24 19:22:35,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:22:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2225 transitions. [2018-10-24 19:22:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-24 19:22:35,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:22:35,954 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 19:22:35,955 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:22:35,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:22:35,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1875339242, now seen corresponding path program 1 times [2018-10-24 19:22:35,955 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:22:35,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:35,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:22:35,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:22:35,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:22:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:22:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 26 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:22:36,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:22:36,211 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:22:36,212 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 167 with the following transitions: [2018-10-24 19:22:36,214 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [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], [703], [705], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:22:36,306 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:22:36,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:24:15,697 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:24:15,699 INFO L272 AbstractInterpreter]: Visited 133 different actions 520 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-24 19:24:15,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:24:15,712 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:24:24,313 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 91.67% of their original sizes. [2018-10-24 19:24:24,313 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 19:26:41,504 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:26:41,509 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:26:41,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:26:41 BoogieIcfgContainer [2018-10-24 19:26:41,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:26:41,510 INFO L168 Benchmark]: Toolchain (without parser) took 264696.76 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 630.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:26:41,511 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-24 19:26:41,512 INFO L168 Benchmark]: CACSL2BoogieTranslator took 759.76 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. [2018-10-24 19:26:41,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 185.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:26:41,517 INFO L168 Benchmark]: Boogie Preprocessor took 92.00 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. [2018-10-24 19:26:41,517 INFO L168 Benchmark]: RCFGBuilder took 3816.41 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: 102.4 MB). Peak memory consumption was 102.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:26:41,523 INFO L168 Benchmark]: TraceAbstraction took 259837.58 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -883.2 MB). Peak memory consumption was 572.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:26:41,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 759.76 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 185.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.00 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 3816.41 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: 102.4 MB). Peak memory consumption was 102.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259837.58 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -883.2 MB). Peak memory consumption was 572.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 538]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 538). Cancelled while BasicCegarLoop was analyzing trace of length 167 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 259.7s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 11.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 854 SDtfs, 3993 SDslu, 687 SDs, 0 SdLazy, 5049 SolverSat, 1075 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s 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, 99.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9943876891245316 AbsIntWeakeningRatio, 0.2 AbsIntAvgWeakeningVarsNumRemoved, 1338.3636363636363 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, 1.8s InterpolantComputationTime, 1033 NumberOfCodeBlocks, 1033 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1026 ConstructedInterpolants, 0 QuantifiedInterpolants, 1195400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 112/112 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown