java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:05:09,877 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:05:09,880 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:05:09,896 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:05:09,897 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:05:09,898 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:05:09,901 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:05:09,905 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:05:09,908 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:05:09,910 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:05:09,911 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:05:09,911 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:05:09,913 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:05:09,914 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:05:09,917 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:05:09,924 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:05:09,925 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:05:09,928 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:05:09,931 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:05:09,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:05:09,935 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:05:09,936 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:05:09,940 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:05:09,950 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:05:09,950 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:05:09,951 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:05:09,952 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:05:09,952 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:05:09,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:05:09,977 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:05:09,978 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:05:09,978 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:05:09,978 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:05:09,978 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:05:09,982 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:05:09,983 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:05:09,983 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:05:09,983 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:05:09,983 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:05:09,983 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:05:09,984 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:05:09,984 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:05:09,984 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:05:09,985 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:05:09,985 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:05:09,985 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:05:09,985 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:05:09,985 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:05:09,986 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:05:09,986 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:05:09,986 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:05:09,986 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:05:09,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:05:09,987 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:05:09,987 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:05:09,987 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:05:09,987 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:05:09,988 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:05:09,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:05:09,988 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:05:09,988 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:05:09,988 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:05:10,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:05:10,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:05:10,052 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:05:10,053 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:05:10,053 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:05:10,054 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label30_false-unreach-call.c [2018-11-07 00:05:10,117 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1970550a3/a29f7db4f6dc42ec88a515c34597d932/FLAG6a2285258 [2018-11-07 00:05:10,853 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:05:10,854 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label30_false-unreach-call.c [2018-11-07 00:05:10,884 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1970550a3/a29f7db4f6dc42ec88a515c34597d932/FLAG6a2285258 [2018-11-07 00:05:10,901 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1970550a3/a29f7db4f6dc42ec88a515c34597d932 [2018-11-07 00:05:10,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:05:10,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:05:10,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:05:10,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:05:10,926 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:05:10,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:05:10" (1/1) ... [2018-11-07 00:05:10,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56927dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:10, skipping insertion in model container [2018-11-07 00:05:10,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:05:10" (1/1) ... [2018-11-07 00:05:10,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:05:11,124 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:05:12,537 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:05:12,542 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:05:13,257 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:05:13,294 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:05:13,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13 WrapperNode [2018-11-07 00:05:13,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:05:13,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:05:13,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:05:13,296 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:05:13,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (1/1) ... [2018-11-07 00:05:13,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (1/1) ... [2018-11-07 00:05:13,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:05:13,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:05:13,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:05:13,642 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:05:13,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (1/1) ... [2018-11-07 00:05:13,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (1/1) ... [2018-11-07 00:05:13,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (1/1) ... [2018-11-07 00:05:13,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (1/1) ... [2018-11-07 00:05:13,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (1/1) ... [2018-11-07 00:05:13,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (1/1) ... [2018-11-07 00:05:13,863 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (1/1) ... [2018-11-07 00:05:13,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:05:13,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:05:13,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:05:13,894 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:05:13,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:05:13,965 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:05:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:05:13,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:05:13,966 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:05:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:05:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:05:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:05:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:05:13,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:05:13,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:05:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:05:13,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:05:13,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:05:13,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:05:13,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:05:22,927 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:05:22,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:05:22 BoogieIcfgContainer [2018-11-07 00:05:22,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:05:22,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:05:22,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:05:22,932 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:05:22,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:05:10" (1/3) ... [2018-11-07 00:05:22,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35270d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:05:22, skipping insertion in model container [2018-11-07 00:05:22,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:05:13" (2/3) ... [2018-11-07 00:05:22,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35270d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:05:22, skipping insertion in model container [2018-11-07 00:05:22,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:05:22" (3/3) ... [2018-11-07 00:05:22,936 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label30_false-unreach-call.c [2018-11-07 00:05:23,056 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:05:23,070 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:05:23,088 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:05:23,150 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:05:23,151 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:05:23,151 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:05:23,151 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:05:23,151 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:05:23,151 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:05:23,151 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:05:23,152 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:05:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 00:05:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 00:05:23,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:05:23,229 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] [2018-11-07 00:05:23,231 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:05:23,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:05:23,238 INFO L82 PathProgramCache]: Analyzing trace with hash -145223636, now seen corresponding path program 1 times [2018-11-07 00:05:23,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:05:23,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:23,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:05:23,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:23,292 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:05:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:05:23,684 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 00:05:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:05:23,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:05:23,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:05:23,713 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:05:23,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:05:23,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:05:23,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:05:23,742 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-07 00:05:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:05:35,479 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-07 00:05:35,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:05:35,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-11-07 00:05:35,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:05:35,533 INFO L225 Difference]: With dead ends: 3234 [2018-11-07 00:05:35,534 INFO L226 Difference]: Without dead ends: 2388 [2018-11-07 00:05:35,549 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:05:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-07 00:05:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-11-07 00:05:35,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-11-07 00:05:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-11-07 00:05:35,731 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 32 [2018-11-07 00:05:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:05:35,731 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-11-07 00:05:35,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:05:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-11-07 00:05:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 00:05:35,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:05:35,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:05:35,739 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:05:35,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:05:35,740 INFO L82 PathProgramCache]: Analyzing trace with hash 552295319, now seen corresponding path program 1 times [2018-11-07 00:05:35,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:05:35,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:35,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:05:35,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:35,742 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:05:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:05:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:05:36,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:05:36,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:05:36,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:05:36,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:05:36,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:05:36,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:05:36,336 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 6 states. [2018-11-07 00:05:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:05:50,743 INFO L93 Difference]: Finished difference Result 9463 states and 15573 transitions. [2018-11-07 00:05:50,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:05:50,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-07 00:05:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:05:50,787 INFO L225 Difference]: With dead ends: 9463 [2018-11-07 00:05:50,787 INFO L226 Difference]: Without dead ends: 7081 [2018-11-07 00:05:50,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:05:50,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2018-11-07 00:05:51,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7037. [2018-11-07 00:05:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2018-11-07 00:05:51,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 10229 transitions. [2018-11-07 00:05:51,031 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 10229 transitions. Word has length 113 [2018-11-07 00:05:51,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:05:51,032 INFO L480 AbstractCegarLoop]: Abstraction has 7037 states and 10229 transitions. [2018-11-07 00:05:51,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:05:51,032 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 10229 transitions. [2018-11-07 00:05:51,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 00:05:51,045 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:05:51,046 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:05:51,046 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:05:51,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:05:51,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1059149049, now seen corresponding path program 1 times [2018-11-07 00:05:51,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:05:51,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:51,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:05:51,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:05:51,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:05:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:05:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:05:51,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:05:51,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:05:51,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:05:51,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:05:51,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:05:51,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:05:51,379 INFO L87 Difference]: Start difference. First operand 7037 states and 10229 transitions. Second operand 6 states. [2018-11-07 00:06:00,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:06:00,974 INFO L93 Difference]: Finished difference Result 23489 states and 35291 transitions. [2018-11-07 00:06:00,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:06:00,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-07 00:06:00,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:06:01,066 INFO L225 Difference]: With dead ends: 23489 [2018-11-07 00:06:01,067 INFO L226 Difference]: Without dead ends: 16458 [2018-11-07 00:06:01,107 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:06:01,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16458 states. [2018-11-07 00:06:01,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16458 to 16369. [2018-11-07 00:06:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16369 states. [2018-11-07 00:06:01,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16369 states to 16369 states and 22454 transitions. [2018-11-07 00:06:01,572 INFO L78 Accepts]: Start accepts. Automaton has 16369 states and 22454 transitions. Word has length 121 [2018-11-07 00:06:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:06:01,575 INFO L480 AbstractCegarLoop]: Abstraction has 16369 states and 22454 transitions. [2018-11-07 00:06:01,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:06:01,575 INFO L276 IsEmpty]: Start isEmpty. Operand 16369 states and 22454 transitions. [2018-11-07 00:06:01,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 00:06:01,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:06:01,582 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:06:01,583 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:06:01,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:01,583 INFO L82 PathProgramCache]: Analyzing trace with hash -128929438, now seen corresponding path program 1 times [2018-11-07 00:06:01,584 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:06:01,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:01,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:06:01,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:01,586 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:06:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:06:01,922 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:06:02,019 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:06:02,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:06:02,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:06:02,020 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:06:02,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:06:02,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:06:02,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:06:02,022 INFO L87 Difference]: Start difference. First operand 16369 states and 22454 transitions. Second operand 6 states. [2018-11-07 00:06:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:06:14,103 INFO L93 Difference]: Finished difference Result 51805 states and 75181 transitions. [2018-11-07 00:06:14,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:06:14,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 00:06:14,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:06:14,274 INFO L225 Difference]: With dead ends: 51805 [2018-11-07 00:06:14,275 INFO L226 Difference]: Without dead ends: 35442 [2018-11-07 00:06:14,365 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:06:14,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35442 states. [2018-11-07 00:06:15,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35442 to 35319. [2018-11-07 00:06:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35319 states. [2018-11-07 00:06:15,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35319 states to 35319 states and 49477 transitions. [2018-11-07 00:06:15,298 INFO L78 Accepts]: Start accepts. Automaton has 35319 states and 49477 transitions. Word has length 146 [2018-11-07 00:06:15,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:06:15,298 INFO L480 AbstractCegarLoop]: Abstraction has 35319 states and 49477 transitions. [2018-11-07 00:06:15,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:06:15,299 INFO L276 IsEmpty]: Start isEmpty. Operand 35319 states and 49477 transitions. [2018-11-07 00:06:15,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 00:06:15,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:06:15,312 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:06:15,312 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:06:15,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:15,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1800636461, now seen corresponding path program 1 times [2018-11-07 00:06:15,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:06:15,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:15,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:06:15,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:06:15,314 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:06:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:06:15,620 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:06:16,059 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 50 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:06:16,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:06:16,060 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:06:16,061 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-11-07 00:06:16,065 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2023], [2025], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2480], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 00:06:16,146 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:06:16,147 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:06:20,114 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:06:20,116 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:06:20,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:06:20,154 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:06:22,679 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 75.33% of their original sizes. [2018-11-07 00:06:22,679 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:06:23,234 INFO L415 sIntCurrentIteration]: We unified 208 AI predicates to 208 [2018-11-07 00:06:23,235 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:06:23,236 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:06:23,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 00:06:23,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:06:23,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 00:06:23,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 00:06:23,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:06:23,238 INFO L87 Difference]: Start difference. First operand 35319 states and 49477 transitions. Second operand 8 states. [2018-11-07 00:06:28,154 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:08:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:08:06,782 INFO L93 Difference]: Finished difference Result 71402 states and 99937 transitions. [2018-11-07 00:08:06,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:08:06,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 209 [2018-11-07 00:08:06,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:08:06,909 INFO L225 Difference]: With dead ends: 71402 [2018-11-07 00:08:06,909 INFO L226 Difference]: Without dead ends: 36089 [2018-11-07 00:08:06,963 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:08:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36089 states. [2018-11-07 00:08:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36089 to 36087. [2018-11-07 00:08:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36087 states. [2018-11-07 00:08:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36087 states to 36087 states and 50261 transitions. [2018-11-07 00:08:07,686 INFO L78 Accepts]: Start accepts. Automaton has 36087 states and 50261 transitions. Word has length 209 [2018-11-07 00:08:07,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:08:07,686 INFO L480 AbstractCegarLoop]: Abstraction has 36087 states and 50261 transitions. [2018-11-07 00:08:07,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 00:08:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 36087 states and 50261 transitions. [2018-11-07 00:08:07,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-11-07 00:08:07,700 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:08:07,700 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:08:07,701 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:08:07,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:08:07,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1958314628, now seen corresponding path program 1 times [2018-11-07 00:08:07,702 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:08:07,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:08:07,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:08:07,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:08:07,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:08:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:08:08,017 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:08:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 00:08:08,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:08:08,914 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:08:08,914 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-11-07 00:08:08,915 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2023], [2025], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 00:08:08,931 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:08:08,932 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:08:17,096 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:08:17,097 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 00:08:17,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:08:17,109 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:08:19,672 INFO L227 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 76.36% of their original sizes. [2018-11-07 00:08:19,672 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 00:08:44,255 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:08:44,261 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:08:44,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:08:44 BoogieIcfgContainer [2018-11-07 00:08:44,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:08:44,263 INFO L168 Benchmark]: Toolchain (without parser) took 213349.63 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 00:08:44,265 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:08:44,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2376.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:08:44,266 INFO L168 Benchmark]: Boogie Procedure Inliner took 346.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:08:44,267 INFO L168 Benchmark]: Boogie Preprocessor took 250.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:08:44,268 INFO L168 Benchmark]: RCFGBuilder took 9034.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 657.0 MB). Peak memory consumption was 657.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:08:44,269 INFO L168 Benchmark]: TraceAbstraction took 201332.65 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: -1.0 GB). Peak memory consumption was 753.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:08:44,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2376.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 346.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 250.63 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9034.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.5 GB in the end (delta: 657.0 MB). Peak memory consumption was 657.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201332.65 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: -1.0 GB). Peak memory consumption was 753.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 87). Cancelled while BasicCegarLoop was analyzing trace of length 223 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 201.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 152.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1629 SDtfs, 15630 SDslu, 769 SDs, 0 SdLazy, 25138 SolverSat, 6793 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 246 GetRequests, 212 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36087occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9951156535771917 AbsIntWeakeningRatio, 0.1258741258741259 AbsIntAvgWeakeningVarsNumRemoved, 776.2727272727273 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 258 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 621 NumberOfCodeBlocks, 621 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 616 ConstructedInterpolants, 0 QuantifiedInterpolants, 473246 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 130/202 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown