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/Problem13_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:24:33,890 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:24:33,893 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:24:33,911 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:24:33,911 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:24:33,912 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:24:33,914 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:24:33,915 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:24:33,917 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:24:33,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:24:33,919 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:24:33,919 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:24:33,920 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:24:33,921 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:24:33,922 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:24:33,923 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:24:33,924 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:24:33,926 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:24:33,928 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:24:33,929 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:24:33,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:24:33,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:24:33,934 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:24:33,943 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:24:33,962 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:24:33,962 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:24:33,963 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:24:33,963 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:24:33,964 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:24:33,964 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:24:33,964 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:24:33,964 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:24:33,964 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:24:33,965 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:24:33,965 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:24:33,965 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:24:33,966 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:24:33,966 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:24:33,966 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:24:33,966 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:24:33,966 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:24:33,967 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:24:33,967 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:24:33,967 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:24:33,967 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:24:33,967 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:24:33,968 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:24:33,968 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:24:33,968 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:24:33,968 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:24:33,968 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:24:33,969 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:24:33,969 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:24:33,969 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:24:33,969 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:24:33,969 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:24:33,969 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:24:33,970 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:24:34,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:24:34,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:24:34,028 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:24:34,029 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:24:34,030 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:24:34,031 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label58_false-unreach-call.c [2018-10-23 22:24:34,089 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dea8bd480/c760937fa1d14854bd766d51fc4eaad6/FLAG86590aba7 [2018-10-23 22:24:34,921 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:24:34,922 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label58_false-unreach-call.c [2018-10-23 22:24:34,972 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dea8bd480/c760937fa1d14854bd766d51fc4eaad6/FLAG86590aba7 [2018-10-23 22:24:34,989 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dea8bd480/c760937fa1d14854bd766d51fc4eaad6 [2018-10-23 22:24:35,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:24:35,003 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:24:35,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:24:35,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:24:35,008 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:24:35,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:24:34" (1/1) ... [2018-10-23 22:24:35,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc1ab2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:35, skipping insertion in model container [2018-10-23 22:24:35,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:24:34" (1/1) ... [2018-10-23 22:24:35,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:24:35,221 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:24:36,731 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:24:36,736 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:24:37,496 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:24:37,534 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:24:37,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37 WrapperNode [2018-10-23 22:24:37,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:24:37,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:24:37,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:24:37,536 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:24:37,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (1/1) ... [2018-10-23 22:24:37,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (1/1) ... [2018-10-23 22:24:38,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:24:38,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:24:38,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:24:38,161 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:24:38,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (1/1) ... [2018-10-23 22:24:38,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (1/1) ... [2018-10-23 22:24:38,210 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (1/1) ... [2018-10-23 22:24:38,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (1/1) ... [2018-10-23 22:24:38,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (1/1) ... [2018-10-23 22:24:38,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (1/1) ... [2018-10-23 22:24:38,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (1/1) ... [2018-10-23 22:24:38,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:24:38,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:24:38,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:24:38,486 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:24:38,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:24:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:24:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:24:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 22:24:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 22:24:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:24:38,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:24:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:24:38,557 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:24:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:24:38,558 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:24:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:24:38,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:24:38,559 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:24:38,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:24:51,903 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:24:51,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:24:51 BoogieIcfgContainer [2018-10-23 22:24:51,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:24:51,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:24:51,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:24:51,908 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:24:51,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:24:34" (1/3) ... [2018-10-23 22:24:51,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf9fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:24:51, skipping insertion in model container [2018-10-23 22:24:51,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:24:37" (2/3) ... [2018-10-23 22:24:51,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf9fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:24:51, skipping insertion in model container [2018-10-23 22:24:51,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:24:51" (3/3) ... [2018-10-23 22:24:51,912 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label58_false-unreach-call.c [2018-10-23 22:24:51,922 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:24:51,940 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:24:51,958 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:24:52,020 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:24:52,020 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:24:52,020 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:24:52,020 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:24:52,020 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:24:52,020 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:24:52,020 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:24:52,021 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:24:52,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-23 22:24:52,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-10-23 22:24:52,071 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:24:52,072 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:24:52,074 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:24:52,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:24:52,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1597313123, now seen corresponding path program 1 times [2018-10-23 22:24:52,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:24:52,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:24:52,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:24:52,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:24:52,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:24:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:24:52,483 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:24:52,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:24:52,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:24:52,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:24:52,591 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:24:52,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:24:52,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:24:52,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:24:52,620 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-23 22:25:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:02,242 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-23 22:25:02,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:25:02,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-10-23 22:25:02,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:02,281 INFO L225 Difference]: With dead ends: 3097 [2018-10-23 22:25:02,281 INFO L226 Difference]: Without dead ends: 1975 [2018-10-23 22:25:02,296 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 [2018-10-23 22:25:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-23 22:25:02,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-23 22:25:02,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-23 22:25:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-23 22:25:02,516 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 19 [2018-10-23 22:25:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:02,516 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-23 22:25:02,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:25:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-23 22:25:02,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-23 22:25:02,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:02,526 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] [2018-10-23 22:25:02,527 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:02,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:02,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1812746414, now seen corresponding path program 1 times [2018-10-23 22:25:02,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:02,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:02,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:02,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:02,531 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:02,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:02,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:25:02,920 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:02,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:25:02,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:25:02,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:25:02,923 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-23 22:25:25,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:25,637 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-10-23 22:25:25,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:25:25,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-10-23 22:25:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:25,667 INFO L225 Difference]: With dead ends: 5737 [2018-10-23 22:25:25,667 INFO L226 Difference]: Without dead ends: 3769 [2018-10-23 22:25:25,675 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:25:25,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-10-23 22:25:25,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-10-23 22:25:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-10-23 22:25:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-10-23 22:25:25,785 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 95 [2018-10-23 22:25:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:25,785 INFO L481 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-10-23 22:25:25,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:25:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-10-23 22:25:25,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-23 22:25:25,790 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:25,791 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] [2018-10-23 22:25:25,791 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:25,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:25,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1681120082, now seen corresponding path program 1 times [2018-10-23 22:25:25,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:25,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:25,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:25,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:25,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:25,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:25,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:25:25,988 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:25,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:25:25,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:25:25,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:25:25,989 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 5 states. [2018-10-23 22:25:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:25:54,849 INFO L93 Difference]: Finished difference Result 13664 states and 21760 transitions. [2018-10-23 22:25:54,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:25:54,855 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2018-10-23 22:25:54,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:25:54,937 INFO L225 Difference]: With dead ends: 13664 [2018-10-23 22:25:54,937 INFO L226 Difference]: Without dead ends: 9985 [2018-10-23 22:25:54,967 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:25:54,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9985 states. [2018-10-23 22:25:55,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9985 to 9795. [2018-10-23 22:25:55,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9795 states. [2018-10-23 22:25:55,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 14501 transitions. [2018-10-23 22:25:55,290 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 14501 transitions. Word has length 109 [2018-10-23 22:25:55,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:25:55,290 INFO L481 AbstractCegarLoop]: Abstraction has 9795 states and 14501 transitions. [2018-10-23 22:25:55,291 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:25:55,291 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 14501 transitions. [2018-10-23 22:25:55,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-23 22:25:55,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:25:55,305 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] [2018-10-23 22:25:55,305 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:25:55,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:25:55,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1652720786, now seen corresponding path program 1 times [2018-10-23 22:25:55,307 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:25:55,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:55,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:25:55,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:25:55,308 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:25:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:25:55,680 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:25:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:25:55,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:25:55,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:25:55,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:25:55,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:25:55,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:25:55,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:25:55,755 INFO L87 Difference]: Start difference. First operand 9795 states and 14501 transitions. Second operand 6 states. [2018-10-23 22:26:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:26:09,570 INFO L93 Difference]: Finished difference Result 34191 states and 53807 transitions. [2018-10-23 22:26:09,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:26:09,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-23 22:26:09,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:26:09,707 INFO L225 Difference]: With dead ends: 34191 [2018-10-23 22:26:09,707 INFO L226 Difference]: Without dead ends: 24402 [2018-10-23 22:26:09,783 INFO L605 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 [2018-10-23 22:26:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24402 states. [2018-10-23 22:26:10,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24402 to 24175. [2018-10-23 22:26:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24175 states. [2018-10-23 22:26:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24175 states to 24175 states and 34092 transitions. [2018-10-23 22:26:10,393 INFO L78 Accepts]: Start accepts. Automaton has 24175 states and 34092 transitions. Word has length 127 [2018-10-23 22:26:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:26:10,394 INFO L481 AbstractCegarLoop]: Abstraction has 24175 states and 34092 transitions. [2018-10-23 22:26:10,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:26:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 24175 states and 34092 transitions. [2018-10-23 22:26:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-10-23 22:26:10,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:26:10,397 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] [2018-10-23 22:26:10,397 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:26:10,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:26:10,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1095351321, now seen corresponding path program 1 times [2018-10-23 22:26:10,398 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:26:10,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:10,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:26:10,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:10,399 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:26:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:26:10,699 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:26:11,075 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:26:11,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:26:11,076 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:26:11,076 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:26:11,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:26:11,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:26:11,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:26:11,077 INFO L87 Difference]: Start difference. First operand 24175 states and 34092 transitions. Second operand 6 states. [2018-10-23 22:26:21,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:26:21,125 INFO L93 Difference]: Finished difference Result 62356 states and 97936 transitions. [2018-10-23 22:26:21,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:26:21,132 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-10-23 22:26:21,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:26:21,318 INFO L225 Difference]: With dead ends: 62356 [2018-10-23 22:26:21,319 INFO L226 Difference]: Without dead ends: 38187 [2018-10-23 22:26:21,378 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:26:21,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38187 states. [2018-10-23 22:26:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38187 to 37985. [2018-10-23 22:26:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37985 states. [2018-10-23 22:26:22,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37985 states to 37985 states and 54458 transitions. [2018-10-23 22:26:22,387 INFO L78 Accepts]: Start accepts. Automaton has 37985 states and 54458 transitions. Word has length 138 [2018-10-23 22:26:22,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:26:22,388 INFO L481 AbstractCegarLoop]: Abstraction has 37985 states and 54458 transitions. [2018-10-23 22:26:22,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:26:22,388 INFO L276 IsEmpty]: Start isEmpty. Operand 37985 states and 54458 transitions. [2018-10-23 22:26:22,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-23 22:26:22,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:26:22,393 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:26:22,393 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:26:22,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:26:22,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1731803128, now seen corresponding path program 1 times [2018-10-23 22:26:22,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:26:22,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:22,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:26:22,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:22,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:26:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:26:22,745 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:26:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:26:23,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:26:23,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:26:23,125 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:26:23,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:26:23,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:26:23,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:26:23,127 INFO L87 Difference]: Start difference. First operand 37985 states and 54458 transitions. Second operand 6 states. [2018-10-23 22:26:36,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:26:36,676 INFO L93 Difference]: Finished difference Result 83946 states and 123880 transitions. [2018-10-23 22:26:36,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:26:36,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2018-10-23 22:26:36,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:26:36,862 INFO L225 Difference]: With dead ends: 83946 [2018-10-23 22:26:36,862 INFO L226 Difference]: Without dead ends: 45967 [2018-10-23 22:26:36,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:26:37,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45967 states. [2018-10-23 22:26:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45967 to 45865. [2018-10-23 22:26:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45865 states. [2018-10-23 22:26:37,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45865 states to 45865 states and 62685 transitions. [2018-10-23 22:26:37,942 INFO L78 Accepts]: Start accepts. Automaton has 45865 states and 62685 transitions. Word has length 166 [2018-10-23 22:26:37,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:26:37,943 INFO L481 AbstractCegarLoop]: Abstraction has 45865 states and 62685 transitions. [2018-10-23 22:26:37,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:26:37,943 INFO L276 IsEmpty]: Start isEmpty. Operand 45865 states and 62685 transitions. [2018-10-23 22:26:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-23 22:26:37,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:26:37,959 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:26:37,959 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:26:37,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:26:37,960 INFO L82 PathProgramCache]: Analyzing trace with hash 456578613, now seen corresponding path program 1 times [2018-10-23 22:26:37,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:26:37,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:37,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:26:37,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:26:37,961 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:26:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:26:38,478 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 98 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:26:38,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:26:38,479 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:26:38,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-10-23 22:26:38,486 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2679], [2681], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-23 22:26:38,593 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:26:38,594 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:26:46,366 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:26:46,368 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-23 22:26:46,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:26:46,378 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:26:51,019 INFO L232 lantSequenceWeakener]: Weakened 193 states. On average, predicates are now at 71.12% of their original sizes. [2018-10-23 22:26:51,019 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:26:52,677 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:26:52,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:26:52,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-23 22:26:52,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:26:52,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 22:26:52,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 22:26:52,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-23 22:26:52,680 INFO L87 Difference]: Start difference. First operand 45865 states and 62685 transitions. Second operand 11 states. [2018-10-23 22:27:44,456 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-23 22:28:13,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 22:28:13,350 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:28:13,355 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:28:13,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:28:13 BoogieIcfgContainer [2018-10-23 22:28:13,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:28:13,356 INFO L168 Benchmark]: Toolchain (without parser) took 218354.22 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -278.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-23 22:28:13,357 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-23 22:28:13,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2530.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:28:13,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 624.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.1 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-23 22:28:13,360 INFO L168 Benchmark]: Boogie Preprocessor took 325.18 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: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:28:13,361 INFO L168 Benchmark]: RCFGBuilder took 13417.60 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 200.3 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -6.3 MB). Peak memory consumption was 678.2 MB. Max. memory is 7.1 GB. [2018-10-23 22:28:13,362 INFO L168 Benchmark]: TraceAbstraction took 201450.87 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 22:28:13,368 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2530.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 624.60 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.1 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 325.18 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: 37.9 MB). Peak memory consumption was 37.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13417.60 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 200.3 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -6.3 MB). Peak memory consumption was 678.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201450.87 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 507.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was constructing difference of abstraction (45865states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (1029 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 201.3s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 180.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2961 SDtfs, 23515 SDslu, 3161 SDs, 0 SdLazy, 34311 SolverSat, 8620 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 138.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 272 GetRequests, 220 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45865occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9956779964221825 AbsIntWeakeningRatio, 0.13953488372093023 AbsIntAvgWeakeningVarsNumRemoved, 47.2093023255814 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 806 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 870 NumberOfCodeBlocks, 870 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 863 ConstructedInterpolants, 0 QuantifiedInterpolants, 509307 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 158/160 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown