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/Problem14_label43_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:29:17,126 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:29:17,128 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:29:17,141 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:29:17,141 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:29:17,142 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:29:17,144 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:29:17,145 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:29:17,147 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:29:17,148 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:29:17,149 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:29:17,149 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:29:17,150 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:29:17,151 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:29:17,153 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:29:17,153 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:29:17,154 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:29:17,156 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:29:17,158 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:29:17,160 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:29:17,161 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:29:17,162 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:29:17,165 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:29:17,174 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 22:29:17,204 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:29:17,206 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:29:17,207 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:29:17,207 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:29:17,207 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:29:17,207 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:29:17,208 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:29:17,208 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:29:17,208 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:29:17,208 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:29:17,208 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:29:17,209 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:29:17,210 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:29:17,210 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:29:17,210 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:29:17,210 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:29:17,212 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:29:17,213 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:29:17,213 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:29:17,213 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:29:17,213 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:29:17,213 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:29:17,214 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:29:17,214 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:29:17,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:29:17,214 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:29:17,215 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:29:17,215 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:29:17,215 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:29:17,215 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:29:17,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:29:17,216 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:29:17,216 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:29:17,216 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:29:17,286 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:29:17,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:29:17,308 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:29:17,311 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:29:17,311 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:29:17,312 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label43_false-unreach-call_false-termination.c [2018-10-23 22:29:17,380 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba963ed0a/45fdb19907924524844e18d8e6c391af/FLAGf5d2225a7 [2018-10-23 22:29:17,932 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:29:17,933 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label43_false-unreach-call_false-termination.c [2018-10-23 22:29:17,960 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba963ed0a/45fdb19907924524844e18d8e6c391af/FLAGf5d2225a7 [2018-10-23 22:29:17,985 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ba963ed0a/45fdb19907924524844e18d8e6c391af [2018-10-23 22:29:17,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:29:18,000 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:29:18,002 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:29:18,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:29:18,009 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:29:18,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:29:17" (1/1) ... [2018-10-23 22:29:18,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@289bb2af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18, skipping insertion in model container [2018-10-23 22:29:18,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:29:17" (1/1) ... [2018-10-23 22:29:18,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:29:18,104 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:29:18,551 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:29:18,555 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:29:18,714 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:29:18,732 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:29:18,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18 WrapperNode [2018-10-23 22:29:18,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:29:18,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:29:18,734 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:29:18,734 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:29:18,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (1/1) ... [2018-10-23 22:29:18,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (1/1) ... [2018-10-23 22:29:18,960 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:29:18,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:29:18,961 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:29:18,961 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:29:18,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (1/1) ... [2018-10-23 22:29:18,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (1/1) ... [2018-10-23 22:29:18,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (1/1) ... [2018-10-23 22:29:18,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (1/1) ... [2018-10-23 22:29:19,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (1/1) ... [2018-10-23 22:29:19,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (1/1) ... [2018-10-23 22:29:19,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (1/1) ... [2018-10-23 22:29:19,069 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:29:19,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:29:19,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:29:19,077 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:29:19,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (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 22:29:19,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:29:19,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:29:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:29:19,158 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:29:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:29:19,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:29:19,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:29:19,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:29:23,739 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:29:23,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:29:23 BoogieIcfgContainer [2018-10-23 22:29:23,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:29:23,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:29:23,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:29:23,745 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:29:23,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:29:17" (1/3) ... [2018-10-23 22:29:23,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706d4e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:29:23, skipping insertion in model container [2018-10-23 22:29:23,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:18" (2/3) ... [2018-10-23 22:29:23,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706d4e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:29:23, skipping insertion in model container [2018-10-23 22:29:23,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:29:23" (3/3) ... [2018-10-23 22:29:23,751 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label43_false-unreach-call_false-termination.c [2018-10-23 22:29:23,763 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:29:23,773 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:29:23,791 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:29:23,831 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:29:23,832 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:29:23,832 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:29:23,832 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:29:23,832 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:29:23,832 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:29:23,833 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:29:23,833 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:29:23,861 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-23 22:29:23,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-23 22:29:23,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:23,870 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] [2018-10-23 22:29:23,873 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:23,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:23,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1620735268, now seen corresponding path program 1 times [2018-10-23 22:29:23,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:23,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:23,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:23,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:23,948 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:24,360 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:29:24,465 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 22:29:24,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:29:24,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:29:24,468 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:24,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:29:24,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:29:24,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:29:24,493 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-23 22:29:26,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:26,601 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-23 22:29:26,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:29:26,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-10-23 22:29:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:26,632 INFO L225 Difference]: With dead ends: 691 [2018-10-23 22:29:26,632 INFO L226 Difference]: Without dead ends: 434 [2018-10-23 22:29:26,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:29:26,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-23 22:29:26,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-23 22:29:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-23 22:29:26,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-23 22:29:26,747 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 22 [2018-10-23 22:29:26,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:26,747 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-23 22:29:26,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:29:26,748 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-23 22:29:26,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-23 22:29:26,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:26,755 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:29:26,755 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:26,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:26,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1438641935, now seen corresponding path program 1 times [2018-10-23 22:29:26,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:26,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:26,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:26,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:26,758 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:27,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:29:27,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:29:27,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:27,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:29:27,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:29:27,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:29:27,158 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-23 22:29:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:29,613 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-10-23 22:29:29,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:29:29,617 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-10-23 22:29:29,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:29,623 INFO L225 Difference]: With dead ends: 1062 [2018-10-23 22:29:29,624 INFO L226 Difference]: Without dead ends: 634 [2018-10-23 22:29:29,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:29:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-10-23 22:29:29,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-10-23 22:29:29,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-10-23 22:29:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-10-23 22:29:29,677 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 109 [2018-10-23 22:29:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:29,678 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-10-23 22:29:29,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:29:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-10-23 22:29:29,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-23 22:29:29,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:29,686 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:29:29,686 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:29,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:29,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1680025772, now seen corresponding path program 1 times [2018-10-23 22:29:29,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:29,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:29,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:29,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:29,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:29,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:29:29,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:29:29,839 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:29,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:29:29,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:29:29,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:29:29,840 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-10-23 22:29:33,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:33,817 INFO L93 Difference]: Finished difference Result 2350 states and 4002 transitions. [2018-10-23 22:29:33,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:29:33,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-10-23 22:29:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:33,837 INFO L225 Difference]: With dead ends: 2350 [2018-10-23 22:29:33,837 INFO L226 Difference]: Without dead ends: 1731 [2018-10-23 22:29:33,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:29:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-23 22:29:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-23 22:29:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-23 22:29:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2678 transitions. [2018-10-23 22:29:33,922 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2678 transitions. Word has length 118 [2018-10-23 22:29:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:33,923 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2678 transitions. [2018-10-23 22:29:33,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:29:33,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2678 transitions. [2018-10-23 22:29:33,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-23 22:29:33,935 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:33,935 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 22:29:33,936 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:33,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:33,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1765816872, now seen corresponding path program 1 times [2018-10-23 22:29:33,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:33,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:33,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:33,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:33,938 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:34,605 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-10-23 22:29:35,333 WARN L179 SmtUtils]: Spent 650.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 18 [2018-10-23 22:29:35,670 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2018-10-23 22:29:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:35,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:29:35,989 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:29:35,990 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-10-23 22:29:35,992 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:29:36,069 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:29:36,069 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:29:38,402 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:29:41,171 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:29:41,174 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:29:41,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:41,218 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:29:43,872 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.45% of their original sizes. [2018-10-23 22:29:43,872 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:29:44,323 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:29:44,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:29:44,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-23 22:29:44,324 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:44,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:29:44,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:29:44,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:29:44,327 INFO L87 Difference]: Start difference. First operand 1731 states and 2678 transitions. Second operand 7 states. [2018-10-23 22:29:59,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:59,248 INFO L93 Difference]: Finished difference Result 3641 states and 5641 transitions. [2018-10-23 22:29:59,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:29:59,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2018-10-23 22:29:59,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:59,259 INFO L225 Difference]: With dead ends: 3641 [2018-10-23 22:29:59,260 INFO L226 Difference]: Without dead ends: 1916 [2018-10-23 22:29:59,268 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:29:59,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-23 22:29:59,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-23 22:29:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-23 22:29:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2869 transitions. [2018-10-23 22:29:59,329 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2869 transitions. Word has length 222 [2018-10-23 22:29:59,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:59,330 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2869 transitions. [2018-10-23 22:29:59,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:29:59,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2869 transitions. [2018-10-23 22:29:59,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-23 22:29:59,339 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:59,340 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:29:59,340 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:59,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:59,341 INFO L82 PathProgramCache]: Analyzing trace with hash -709448537, now seen corresponding path program 1 times [2018-10-23 22:29:59,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:59,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:59,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:59,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:59,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:30:00,020 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-23 22:30:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 133 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:30:00,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:30:00,322 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:30:00,322 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-10-23 22:30:00,323 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:30:00,329 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:30:00,329 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:30:01,626 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:30:06,479 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:30:06,480 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 24 variables. [2018-10-23 22:30:06,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:30:06,516 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:30:09,352 INFO L232 lantSequenceWeakener]: Weakened 133 states. On average, predicates are now at 77.87% of their original sizes. [2018-10-23 22:30:09,353 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:30:33,364 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:30:33,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:30:33,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-10-23 22:30:33,365 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:30:33,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-23 22:30:33,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-23 22:30:33,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-10-23 22:30:33,367 INFO L87 Difference]: Start difference. First operand 1914 states and 2869 transitions. Second operand 24 states. [2018-10-23 22:32:50,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:32:50,096 INFO L93 Difference]: Finished difference Result 4202 states and 6240 transitions. [2018-10-23 22:32:50,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-23 22:32:50,096 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 307 [2018-10-23 22:32:50,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:32:50,107 INFO L225 Difference]: With dead ends: 4202 [2018-10-23 22:32:50,107 INFO L226 Difference]: Without dead ends: 1919 [2018-10-23 22:32:50,118 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 320 GetRequests, 264 SyntacticMatches, 20 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 28.4s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2018-10-23 22:32:50,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2018-10-23 22:32:50,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1914. [2018-10-23 22:32:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-23 22:32:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2863 transitions. [2018-10-23 22:32:50,212 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2863 transitions. Word has length 307 [2018-10-23 22:32:50,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:32:50,213 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2863 transitions. [2018-10-23 22:32:50,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-23 22:32:50,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2863 transitions. [2018-10-23 22:32:50,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-10-23 22:32:50,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:32:50,222 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:32:50,223 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:32:50,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:32:50,223 INFO L82 PathProgramCache]: Analyzing trace with hash 2029899283, now seen corresponding path program 1 times [2018-10-23 22:32:50,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:32:50,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:32:50,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:32:50,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:32:50,225 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:32:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:32:50,737 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:32:50,916 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 22:32:51,162 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 22:32:51,821 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 58 proven. 267 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:32:51,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:32:51,822 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:32:51,822 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 334 with the following transitions: [2018-10-23 22:32:51,823 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [77], [79], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:32:51,827 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:32:51,827 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:32:52,872 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:32:58,303 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:32:58,303 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:32:58,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:32:58,315 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:33:01,753 INFO L232 lantSequenceWeakener]: Weakened 312 states. On average, predicates are now at 77.52% of their original sizes. [2018-10-23 22:33:01,753 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:33:05,699 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:33:05,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:33:05,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [15] total 30 [2018-10-23 22:33:05,700 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:33:05,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-23 22:33:05,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-23 22:33:05,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-10-23 22:33:05,702 INFO L87 Difference]: Start difference. First operand 1914 states and 2863 transitions. Second operand 17 states. Received shutdown request... [2018-10-23 22:33:16,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 22:33:16,998 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:33:17,005 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:33:17,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:33:17 BoogieIcfgContainer [2018-10-23 22:33:17,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:33:17,006 INFO L168 Benchmark]: Toolchain (without parser) took 239007.50 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 474.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:33:17,007 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 22:33:17,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:33:17,009 INFO L168 Benchmark]: Boogie Procedure Inliner took 226.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:33:17,009 INFO L168 Benchmark]: Boogie Preprocessor took 108.75 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:33:17,010 INFO L168 Benchmark]: RCFGBuilder took 4664.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.9 MB). Peak memory consumption was 134.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:33:17,011 INFO L168 Benchmark]: TraceAbstraction took 233263.76 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 365.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:33:17,016 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 731.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 226.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 732.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.75 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4664.54 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.9 MB). Peak memory consumption was 134.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233263.76 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.6 GB in the end (delta: -1.5 GB). Peak memory consumption was 365.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 49). Cancelled while BasicCegarLoop was constructing difference of abstraction (1914states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (53 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 233.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 171.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 792 SDtfs, 4402 SDslu, 465 SDs, 0 SdLazy, 6146 SolverSat, 1211 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 899 GetRequests, 804 SyntacticMatches, 23 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 34.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1914occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.9s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9954847227143121 AbsIntWeakeningRatio, 0.10477299185098952 AbsIntAvgWeakeningVarsNumRemoved, 380.9941792782305 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 1111 NumberOfCodeBlocks, 1111 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1105 ConstructedInterpolants, 0 QuantifiedInterpolants, 4240970 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 346/779 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown