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/Problem10_label03_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 00:50:07,911 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 00:50:07,913 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 00:50:07,925 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 00:50:07,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 00:50:07,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 00:50:07,928 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 00:50:07,930 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 00:50:07,932 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 00:50:07,932 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 00:50:07,933 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 00:50:07,934 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 00:50:07,934 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 00:50:07,935 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 00:50:07,937 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 00:50:07,937 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 00:50:07,938 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 00:50:07,940 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 00:50:07,942 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 00:50:07,944 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 00:50:07,945 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 00:50:07,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 00:50:07,952 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 00:50:07,964 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 00:50:07,987 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 00:50:07,988 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 00:50:07,989 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 00:50:07,989 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 00:50:07,990 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 00:50:07,990 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 00:50:07,990 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 00:50:07,990 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 00:50:07,990 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 00:50:07,990 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 00:50:07,991 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 00:50:07,991 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 00:50:07,992 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 00:50:07,992 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 00:50:07,992 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 00:50:07,994 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 00:50:07,994 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 00:50:07,995 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 00:50:07,995 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 00:50:07,995 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 00:50:07,995 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 00:50:07,995 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 00:50:07,996 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 00:50:07,996 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 00:50:07,996 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:50:07,996 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 00:50:07,996 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 00:50:07,997 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 00:50:07,997 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 00:50:07,997 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 00:50:07,998 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 00:50:07,998 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 00:50:07,998 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 00:50:07,998 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 00:50:08,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 00:50:08,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 00:50:08,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 00:50:08,064 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 00:50:08,065 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 00:50:08,066 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03_true-unreach-call.c [2018-10-24 00:50:08,130 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2eaeca382/b5dbd63c2d02422ab1ee1eac08e444ab/FLAG795dd63bb [2018-10-24 00:50:08,693 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 00:50:08,694 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label03_true-unreach-call.c [2018-10-24 00:50:08,709 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2eaeca382/b5dbd63c2d02422ab1ee1eac08e444ab/FLAG795dd63bb [2018-10-24 00:50:08,737 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2eaeca382/b5dbd63c2d02422ab1ee1eac08e444ab [2018-10-24 00:50:08,754 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 00:50:08,756 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 00:50:08,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 00:50:08,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 00:50:08,762 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 00:50:08,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:50:08" (1/1) ... [2018-10-24 00:50:08,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498cb451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:08, skipping insertion in model container [2018-10-24 00:50:08,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:50:08" (1/1) ... [2018-10-24 00:50:08,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 00:50:08,850 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 00:50:09,365 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:50:09,371 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 00:50:09,478 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 00:50:09,498 INFO L193 MainTranslator]: Completed translation [2018-10-24 00:50:09,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09 WrapperNode [2018-10-24 00:50:09,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 00:50:09,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 00:50:09,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 00:50:09,501 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 00:50:09,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (1/1) ... [2018-10-24 00:50:09,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (1/1) ... [2018-10-24 00:50:09,706 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 00:50:09,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 00:50:09,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 00:50:09,707 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 00:50:09,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (1/1) ... [2018-10-24 00:50:09,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (1/1) ... [2018-10-24 00:50:09,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (1/1) ... [2018-10-24 00:50:09,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (1/1) ... [2018-10-24 00:50:09,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (1/1) ... [2018-10-24 00:50:09,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (1/1) ... [2018-10-24 00:50:09,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (1/1) ... [2018-10-24 00:50:09,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 00:50:09,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 00:50:09,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 00:50:09,812 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 00:50:09,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 00:50:09,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 00:50:09,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 00:50:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 00:50:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 00:50:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 00:50:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 00:50:09,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 00:50:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 00:50:13,190 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 00:50:13,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:50:13 BoogieIcfgContainer [2018-10-24 00:50:13,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 00:50:13,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 00:50:13,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 00:50:13,195 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 00:50:13,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:50:08" (1/3) ... [2018-10-24 00:50:13,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52add7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:50:13, skipping insertion in model container [2018-10-24 00:50:13,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:50:09" (2/3) ... [2018-10-24 00:50:13,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52add7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:50:13, skipping insertion in model container [2018-10-24 00:50:13,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:50:13" (3/3) ... [2018-10-24 00:50:13,199 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label03_true-unreach-call.c [2018-10-24 00:50:13,210 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 00:50:13,221 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 00:50:13,238 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 00:50:13,275 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 00:50:13,275 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 00:50:13,275 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 00:50:13,275 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 00:50:13,276 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 00:50:13,276 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 00:50:13,276 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 00:50:13,277 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 00:50:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 00:50:13,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 00:50:13,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:13,314 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:50:13,316 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:13,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:13,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1405656705, now seen corresponding path program 1 times [2018-10-24 00:50:13,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:13,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:13,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:13,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:13,374 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:50:13,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:50:13,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 00:50:13,787 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:13,794 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 00:50:13,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 00:50:13,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:50:13,813 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2018-10-24 00:50:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:50:16,039 INFO L93 Difference]: Finished difference Result 737 states and 1298 transitions. [2018-10-24 00:50:16,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 00:50:16,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-10-24 00:50:16,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:50:16,063 INFO L225 Difference]: With dead ends: 737 [2018-10-24 00:50:16,064 INFO L226 Difference]: Without dead ends: 515 [2018-10-24 00:50:16,072 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:50:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2018-10-24 00:50:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 356. [2018-10-24 00:50:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 00:50:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 613 transitions. [2018-10-24 00:50:16,156 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 613 transitions. Word has length 43 [2018-10-24 00:50:16,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:50:16,156 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 613 transitions. [2018-10-24 00:50:16,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 00:50:16,157 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 613 transitions. [2018-10-24 00:50:16,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 00:50:16,164 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:16,164 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 00:50:16,164 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:16,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:16,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1018978157, now seen corresponding path program 1 times [2018-10-24 00:50:16,165 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:16,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:16,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:16,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:16,167 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:16,402 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:50:16,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 00:50:16,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 00:50:16,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:16,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 00:50:16,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 00:50:16,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 00:50:16,406 INFO L87 Difference]: Start difference. First operand 356 states and 613 transitions. Second operand 4 states. [2018-10-24 00:50:18,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:50:18,221 INFO L93 Difference]: Finished difference Result 1282 states and 2343 transitions. [2018-10-24 00:50:18,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 00:50:18,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-10-24 00:50:18,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:50:18,237 INFO L225 Difference]: With dead ends: 1282 [2018-10-24 00:50:18,238 INFO L226 Difference]: Without dead ends: 932 [2018-10-24 00:50:18,243 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 [2018-10-24 00:50:18,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2018-10-24 00:50:18,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2018-10-24 00:50:18,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 932 states. [2018-10-24 00:50:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1438 transitions. [2018-10-24 00:50:18,313 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1438 transitions. Word has length 114 [2018-10-24 00:50:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:50:18,314 INFO L481 AbstractCegarLoop]: Abstraction has 932 states and 1438 transitions. [2018-10-24 00:50:18,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 00:50:18,315 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1438 transitions. [2018-10-24 00:50:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 00:50:18,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:50:18,326 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:50:18,326 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:50:18,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:18,327 INFO L82 PathProgramCache]: Analyzing trace with hash 671547815, now seen corresponding path program 1 times [2018-10-24 00:50:18,327 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:50:18,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:18,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:50:18,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:50:18,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:50:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:50:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 00:50:18,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:50:18,654 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:50:18,655 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-10-24 00:50:18,657 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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], [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], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [730], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:50:18,736 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:50:18,737 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:50:23,585 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:50:23,587 INFO L272 AbstractInterpreter]: Visited 133 different actions 133 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 00:50:23,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:50:23,600 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:50:26,822 INFO L232 lantSequenceWeakener]: Weakened 157 states. On average, predicates are now at 73.78% of their original sizes. [2018-10-24 00:50:26,822 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:50:34,797 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:50:34,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:50:34,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2018-10-24 00:50:34,798 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:50:34,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 00:50:34,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 00:50:34,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 00:50:34,800 INFO L87 Difference]: Start difference. First operand 932 states and 1438 transitions. Second operand 11 states. [2018-10-24 00:50:49,276 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:51:30,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 00:51:30,488 INFO L93 Difference]: Finished difference Result 2007 states and 3124 transitions. [2018-10-24 00:51:30,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 00:51:30,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2018-10-24 00:51:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 00:51:30,497 INFO L225 Difference]: With dead ends: 2007 [2018-10-24 00:51:30,497 INFO L226 Difference]: Without dead ends: 1081 [2018-10-24 00:51:30,502 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 176 GetRequests, 117 SyntacticMatches, 45 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-10-24 00:51:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2018-10-24 00:51:30,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1076. [2018-10-24 00:51:30,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1076 states. [2018-10-24 00:51:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1590 transitions. [2018-10-24 00:51:30,566 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1590 transitions. Word has length 172 [2018-10-24 00:51:30,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 00:51:30,567 INFO L481 AbstractCegarLoop]: Abstraction has 1076 states and 1590 transitions. [2018-10-24 00:51:30,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 00:51:30,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1590 transitions. [2018-10-24 00:51:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-24 00:51:30,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 00:51:30,574 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 00:51:30,574 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 00:51:30,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:51:30,574 INFO L82 PathProgramCache]: Analyzing trace with hash 254914584, now seen corresponding path program 1 times [2018-10-24 00:51:30,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 00:51:30,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:51:30,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 00:51:30,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 00:51:30,576 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 00:51:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 00:51:31,029 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 00:51:31,461 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 00:51:31,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 00:51:31,462 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 00:51:31,462 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-24 00:51:31,462 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [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], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 00:51:31,468 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 00:51:31,468 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 00:51:32,984 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 00:51:47,884 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 00:51:47,884 INFO L272 AbstractInterpreter]: Visited 103 different actions 588 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 00:51:47,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 00:51:47,892 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 00:51:50,497 INFO L232 lantSequenceWeakener]: Weakened 33 states. On average, predicates are now at 75.62% of their original sizes. [2018-10-24 00:51:50,497 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 00:52:20,835 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 00:52:20,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 00:52:20,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [11] total 27 [2018-10-24 00:52:20,836 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 00:52:20,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 00:52:20,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 00:52:20,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2018-10-24 00:52:20,837 INFO L87 Difference]: Start difference. First operand 1076 states and 1590 transitions. Second operand 18 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown