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_label04_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:36:44,956 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:36:44,958 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:36:44,971 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:36:44,971 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:36:44,972 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:36:44,974 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:36:44,975 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:36:44,985 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:36:44,985 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:36:44,986 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:36:44,987 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:36:44,988 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:36:44,989 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:36:44,990 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:36:44,991 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:36:44,992 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:36:44,993 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:36:44,995 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:36:44,997 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:36:44,998 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:36:44,999 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:36:45,002 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:36:45,011 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 21:36:45,026 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:36:45,027 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:36:45,028 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:36:45,028 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:36:45,028 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:36:45,031 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:36:45,031 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:36:45,031 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:36:45,031 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:36:45,031 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:36:45,032 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:36:45,032 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:36:45,033 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:36:45,034 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:36:45,034 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:36:45,034 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:36:45,035 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:36:45,036 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:36:45,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:36:45,037 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:36:45,037 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:36:45,037 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:36:45,038 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:36:45,038 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:36:45,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:36:45,038 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:36:45,039 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:36:45,039 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:36:45,039 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:36:45,039 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:36:45,039 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:36:45,039 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:36:45,040 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:36:45,040 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:36:45,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:36:45,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:36:45,120 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:36:45,122 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:36:45,122 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:36:45,123 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label04_true-unreach-call_false-termination.c [2018-10-24 21:36:45,190 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b95766b53/e45b6a4b50bf41b29cb211eeafed1e27/FLAGe49227c75 [2018-10-24 21:36:45,809 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:36:45,810 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label04_true-unreach-call_false-termination.c [2018-10-24 21:36:45,828 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b95766b53/e45b6a4b50bf41b29cb211eeafed1e27/FLAGe49227c75 [2018-10-24 21:36:45,851 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b95766b53/e45b6a4b50bf41b29cb211eeafed1e27 [2018-10-24 21:36:45,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:36:45,867 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:36:45,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:36:45,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:36:45,877 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:36:45,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:36:45" (1/1) ... [2018-10-24 21:36:45,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41a3165c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:45, skipping insertion in model container [2018-10-24 21:36:45,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:36:45" (1/1) ... [2018-10-24 21:36:45,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:36:45,974 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:36:46,503 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:36:46,510 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:36:46,694 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:36:46,733 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:36:46,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46 WrapperNode [2018-10-24 21:36:46,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:36:46,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:36:46,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:36:46,739 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:36:46,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (1/1) ... [2018-10-24 21:36:46,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (1/1) ... [2018-10-24 21:36:46,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:36:46,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:36:46,975 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:36:46,975 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:36:46,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (1/1) ... [2018-10-24 21:36:46,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (1/1) ... [2018-10-24 21:36:47,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (1/1) ... [2018-10-24 21:36:47,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (1/1) ... [2018-10-24 21:36:47,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (1/1) ... [2018-10-24 21:36:47,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (1/1) ... [2018-10-24 21:36:47,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (1/1) ... [2018-10-24 21:36:47,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:36:47,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:36:47,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:36:47,097 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:36:47,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (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 21:36:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:36:47,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:36:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:36:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:36:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:36:47,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:36:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:36:47,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:36:50,828 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:36:50,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:36:50 BoogieIcfgContainer [2018-10-24 21:36:50,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:36:50,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:36:50,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:36:50,838 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:36:50,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:36:45" (1/3) ... [2018-10-24 21:36:50,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fab5c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:36:50, skipping insertion in model container [2018-10-24 21:36:50,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:36:46" (2/3) ... [2018-10-24 21:36:50,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fab5c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:36:50, skipping insertion in model container [2018-10-24 21:36:50,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:36:50" (3/3) ... [2018-10-24 21:36:50,843 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label04_true-unreach-call_false-termination.c [2018-10-24 21:36:50,854 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:36:50,866 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:36:50,883 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:36:50,919 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:36:50,919 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:36:50,919 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:36:50,919 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:36:50,920 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:36:50,920 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:36:50,920 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:36:50,920 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:36:50,945 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 21:36:50,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-10-24 21:36:50,955 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:36:50,956 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:36:50,959 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:36:50,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:36:50,966 INFO L82 PathProgramCache]: Analyzing trace with hash -670280511, now seen corresponding path program 1 times [2018-10-24 21:36:50,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:36:51,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:51,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:36:51,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:51,019 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:36:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:36:51,492 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 21:36:51,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:36:51,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:36:51,495 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:36:51,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:36:51,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:36:51,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:36:51,523 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-10-24 21:36:53,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:36:53,208 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-10-24 21:36:53,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:36:53,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-10-24 21:36:53,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:36:53,233 INFO L225 Difference]: With dead ends: 691 [2018-10-24 21:36:53,233 INFO L226 Difference]: Without dead ends: 434 [2018-10-24 21:36:53,241 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:36:53,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-10-24 21:36:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-10-24 21:36:53,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-24 21:36:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-10-24 21:36:53,336 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 59 [2018-10-24 21:36:53,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:36:53,337 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-10-24 21:36:53,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:36:53,338 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-10-24 21:36:53,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 21:36:53,346 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:36:53,346 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, 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] [2018-10-24 21:36:53,347 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:36:53,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:36:53,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2036233980, now seen corresponding path program 1 times [2018-10-24 21:36:53,347 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:36:53,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:53,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:36:53,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:53,349 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:36:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:36:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:36:53,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:36:53,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:36:53,629 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:36:53,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:36:53,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:36:53,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:36:53,634 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-10-24 21:36:57,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:36:57,289 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-10-24 21:36:57,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:36:57,290 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-24 21:36:57,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:36:57,306 INFO L225 Difference]: With dead ends: 1588 [2018-10-24 21:36:57,307 INFO L226 Difference]: Without dead ends: 1160 [2018-10-24 21:36:57,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:36:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-10-24 21:36:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-10-24 21:36:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-10-24 21:36:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-10-24 21:36:57,409 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 129 [2018-10-24 21:36:57,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:36:57,410 INFO L481 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-10-24 21:36:57,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:36:57,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-10-24 21:36:57,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-24 21:36:57,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:36:57,421 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, 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] [2018-10-24 21:36:57,423 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:36:57,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:36:57,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1284385993, now seen corresponding path program 1 times [2018-10-24 21:36:57,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:36:57,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:57,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:36:57,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:36:57,426 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:36:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:36:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:36:57,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:36:57,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:36:57,668 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:36:57,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:36:57,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:36:57,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:36:57,669 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-10-24 21:37:00,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:37:00,287 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-10-24 21:37:00,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:37:00,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-24 21:37:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:37:00,305 INFO L225 Difference]: With dead ends: 2716 [2018-10-24 21:37:00,305 INFO L226 Difference]: Without dead ends: 1569 [2018-10-24 21:37:00,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:37:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-10-24 21:37:00,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-10-24 21:37:00,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-10-24 21:37:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-10-24 21:37:00,384 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 130 [2018-10-24 21:37:00,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:37:00,384 INFO L481 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-10-24 21:37:00,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:37:00,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-10-24 21:37:00,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 21:37:00,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:37:00,389 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, 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] [2018-10-24 21:37:00,390 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:37:00,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:00,391 INFO L82 PathProgramCache]: Analyzing trace with hash 516676699, now seen corresponding path program 1 times [2018-10-24 21:37:00,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:37:00,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:00,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:37:00,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:00,392 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:37:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:37:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:37:00,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:37:00,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:37:00,561 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:37:00,562 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:37:00,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:37:00,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:37:00,563 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-10-24 21:37:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:37:03,340 INFO L93 Difference]: Finished difference Result 4906 states and 7504 transitions. [2018-10-24 21:37:03,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:37:03,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-10-24 21:37:03,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:37:03,362 INFO L225 Difference]: With dead ends: 4906 [2018-10-24 21:37:03,362 INFO L226 Difference]: Without dead ends: 3374 [2018-10-24 21:37:03,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:37:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3374 states. [2018-10-24 21:37:03,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3374 to 3263. [2018-10-24 21:37:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2018-10-24 21:37:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 4437 transitions. [2018-10-24 21:37:03,475 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 4437 transitions. Word has length 132 [2018-10-24 21:37:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:37:03,476 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 4437 transitions. [2018-10-24 21:37:03,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:37:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 4437 transitions. [2018-10-24 21:37:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-24 21:37:03,484 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:37:03,484 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:37:03,484 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:37:03,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:03,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1486188283, now seen corresponding path program 1 times [2018-10-24 21:37:03,485 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:37:03,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:03,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:37:03,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:03,487 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:37:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:37:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:37:04,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:37:04,094 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:37:04,095 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 218 with the following transitions: [2018-10-24 21:37:04,097 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:37:04,184 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:37:04,184 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:37:05,539 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:37:06,333 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:37:06,335 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 21:37:06,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:06,356 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:37:08,226 INFO L232 lantSequenceWeakener]: Weakened 209 states. On average, predicates are now at 78.26% of their original sizes. [2018-10-24 21:37:08,226 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:37:08,588 INFO L413 sIntCurrentIteration]: We have 216 unified AI predicates [2018-10-24 21:37:08,589 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:37:08,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:37:08,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-10-24 21:37:08,591 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:37:08,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:37:08,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:37:08,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:37:08,592 INFO L87 Difference]: Start difference. First operand 3263 states and 4437 transitions. Second operand 7 states. [2018-10-24 21:37:38,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:37:38,121 INFO L93 Difference]: Finished difference Result 6705 states and 9095 transitions. [2018-10-24 21:37:38,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:37:38,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2018-10-24 21:37:38,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:37:38,141 INFO L225 Difference]: With dead ends: 6705 [2018-10-24 21:37:38,142 INFO L226 Difference]: Without dead ends: 3448 [2018-10-24 21:37:38,155 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 217 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:37:38,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3448 states. [2018-10-24 21:37:38,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3448 to 3446. [2018-10-24 21:37:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3446 states. [2018-10-24 21:37:38,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 4628 transitions. [2018-10-24 21:37:38,254 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 4628 transitions. Word has length 217 [2018-10-24 21:37:38,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:37:38,255 INFO L481 AbstractCegarLoop]: Abstraction has 3446 states and 4628 transitions. [2018-10-24 21:37:38,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:37:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 4628 transitions. [2018-10-24 21:37:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-10-24 21:37:38,265 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:37:38,266 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:37:38,266 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:37:38,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:38,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1576427027, now seen corresponding path program 1 times [2018-10-24 21:37:38,267 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:37:38,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:38,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:37:38,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:37:38,269 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:37:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:37:38,781 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 21:37:38,990 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 21:37:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 243 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:37:39,524 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:37:39,524 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:37:39,524 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 303 with the following transitions: [2018-10-24 21:37:39,525 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], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 21:37:39,530 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:37:39,530 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:37:40,878 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:37:44,566 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:37:44,566 INFO L272 AbstractInterpreter]: Visited 94 different actions 182 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:37:44,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:37:44,573 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:37:47,556 INFO L232 lantSequenceWeakener]: Weakened 196 states. On average, predicates are now at 78.46% of their original sizes. [2018-10-24 21:37:47,556 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:37:55,497 INFO L413 sIntCurrentIteration]: We have 301 unified AI predicates [2018-10-24 21:37:55,498 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:37:55,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:37:55,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [12] total 32 [2018-10-24 21:37:55,499 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:37:55,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 21:37:55,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 21:37:55,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2018-10-24 21:37:55,500 INFO L87 Difference]: Start difference. First operand 3446 states and 4628 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 21:40:49,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-10-24 21:40:49,078 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:40:49,084 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:40:49,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:40:49 BoogieIcfgContainer [2018-10-24 21:40:49,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:40:49,086 INFO L168 Benchmark]: Toolchain (without parser) took 243219.81 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 21:40:49,088 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:40:49,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 865.81 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:40:49,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 236.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:40:49,090 INFO L168 Benchmark]: Boogie Preprocessor took 121.04 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2018-10-24 21:40:49,091 INFO L168 Benchmark]: RCFGBuilder took 3733.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.0 MB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:40:49,092 INFO L168 Benchmark]: TraceAbstraction took 238250.98 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -566.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 21:40:49,097 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 865.81 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 236.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 737.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.5 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.04 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: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3733.55 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 117.0 MB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238250.98 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -566.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was constructing difference of abstraction (3446states) and FLOYD_HOARE automaton (currently 30 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (5886 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 238.1s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 214.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 822 SDtfs, 7260 SDslu, 1141 SDs, 0 SdLazy, 8715 SolverSat, 1456 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 564 GetRequests, 501 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3446occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9952730356291869 AbsIntWeakeningRatio, 0.11218568665377177 AbsIntAvgWeakeningVarsNumRemoved, 403.5570599613153 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 151 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 969 NumberOfCodeBlocks, 969 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 963 ConstructedInterpolants, 0 QuantifiedInterpolants, 1937457 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 580/722 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown