java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label57_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:21:38,928 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:21:38,930 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:21:38,948 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:21:38,948 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:21:38,949 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:21:38,951 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:21:38,953 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:21:38,954 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:21:38,955 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:21:38,956 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:21:38,956 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:21:38,957 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:21:38,958 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:21:38,960 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:21:38,960 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:21:38,961 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:21:38,963 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:21:38,965 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:21:38,967 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:21:38,968 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:21:38,969 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:21:38,972 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:21:38,981 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:21:38,996 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:21:38,996 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:21:38,997 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:21:38,997 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:21:38,998 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:21:38,998 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:21:38,998 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:21:38,998 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:21:38,999 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:21:38,999 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:21:38,999 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:21:38,999 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:21:39,000 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:21:39,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:21:39,001 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:21:39,001 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:21:39,001 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:21:39,001 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:21:39,002 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:21:39,002 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:21:39,002 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:21:39,002 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:21:39,003 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:21:39,003 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:21:39,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:21:39,003 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:21:39,007 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:21:39,007 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:21:39,008 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:21:39,008 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:21:39,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:21:39,008 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:21:39,009 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:21:39,009 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:21:39,074 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:21:39,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:21:39,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:21:39,103 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:21:39,103 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:21:39,104 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label57_false-unreach-call_false-termination.c [2018-11-07 00:21:39,173 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e17bb007/b6ab785c5af645a286395c1ce3018089/FLAGb8a4a164b [2018-11-07 00:21:39,810 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:21:39,811 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label57_false-unreach-call_false-termination.c [2018-11-07 00:21:39,830 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e17bb007/b6ab785c5af645a286395c1ce3018089/FLAGb8a4a164b [2018-11-07 00:21:39,853 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e17bb007/b6ab785c5af645a286395c1ce3018089 [2018-11-07 00:21:39,864 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:21:39,865 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:21:39,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:21:39,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:21:39,870 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:21:39,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:21:39" (1/1) ... [2018-11-07 00:21:39,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2dec57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:39, skipping insertion in model container [2018-11-07 00:21:39,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:21:39" (1/1) ... [2018-11-07 00:21:39,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:21:39,964 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:21:40,479 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:21:40,489 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:21:40,667 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:21:40,686 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:21:40,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40 WrapperNode [2018-11-07 00:21:40,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:21:40,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:21:40,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:21:40,688 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:21:40,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (1/1) ... [2018-11-07 00:21:40,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (1/1) ... [2018-11-07 00:21:40,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:21:40,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:21:40,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:21:40,823 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:21:40,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (1/1) ... [2018-11-07 00:21:40,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (1/1) ... [2018-11-07 00:21:40,845 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (1/1) ... [2018-11-07 00:21:40,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (1/1) ... [2018-11-07 00:21:40,890 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (1/1) ... [2018-11-07 00:21:40,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (1/1) ... [2018-11-07 00:21:40,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (1/1) ... [2018-11-07 00:21:40,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:21:40,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:21:40,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:21:40,932 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:21:40,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:21:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:21:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:21:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:21:41,008 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:21:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:21:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:21:41,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:21:41,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:21:41,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:21:44,606 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:21:44,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:21:44 BoogieIcfgContainer [2018-11-07 00:21:44,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:21:44,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:21:44,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:21:44,611 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:21:44,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:21:39" (1/3) ... [2018-11-07 00:21:44,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b249e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:21:44, skipping insertion in model container [2018-11-07 00:21:44,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:21:40" (2/3) ... [2018-11-07 00:21:44,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64b249e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:21:44, skipping insertion in model container [2018-11-07 00:21:44,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:21:44" (3/3) ... [2018-11-07 00:21:44,616 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label57_false-unreach-call_false-termination.c [2018-11-07 00:21:44,627 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:21:44,636 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:21:44,654 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:21:44,693 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:21:44,694 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:21:44,694 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:21:44,694 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:21:44,695 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:21:44,695 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:21:44,695 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:21:44,695 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:21:44,729 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 00:21:44,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-07 00:21:44,737 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:44,738 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] [2018-11-07 00:21:44,740 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:44,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:44,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1786255177, now seen corresponding path program 1 times [2018-11-07 00:21:44,748 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:44,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:44,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:44,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:44,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:45,204 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:21:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:21:45,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:21:45,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:21:45,309 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:45,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:21:45,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:21:45,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:21:45,331 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 00:21:47,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:47,011 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 00:21:47,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:21:47,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-07 00:21:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:47,035 INFO L225 Difference]: With dead ends: 691 [2018-11-07 00:21:47,035 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 00:21:47,044 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:21:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 00:21:47,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 00:21:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 00:21:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 00:21:47,133 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 37 [2018-11-07 00:21:47,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:47,134 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 00:21:47,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:21:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 00:21:47,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-11-07 00:21:47,142 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:47,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:21:47,143 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:47,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:47,144 INFO L82 PathProgramCache]: Analyzing trace with hash -778187265, now seen corresponding path program 1 times [2018-11-07 00:21:47,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:47,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:47,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:47,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:47,146 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:21:47,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:21:47,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:21:47,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:47,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:21:47,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:21:47,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:21:47,487 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 00:21:49,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:49,566 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 00:21:49,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:21:49,567 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2018-11-07 00:21:49,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:49,574 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 00:21:49,574 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 00:21:49,578 INFO L604 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 [2018-11-07 00:21:49,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 00:21:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 00:21:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 00:21:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 00:21:49,619 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 124 [2018-11-07 00:21:49,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:49,620 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 00:21:49,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:21:49,620 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 00:21:49,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 00:21:49,624 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:49,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:21:49,624 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:49,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:49,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1753523144, now seen corresponding path program 1 times [2018-11-07 00:21:49,625 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:49,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:49,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:49,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:49,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:49,818 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:21:49,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:21:49,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:21:49,819 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:21:49,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:21:49,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:21:49,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:21:49,821 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-11-07 00:21:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:21:53,763 INFO L93 Difference]: Finished difference Result 2352 states and 4016 transitions. [2018-11-07 00:21:53,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:21:53,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2018-11-07 00:21:53,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:21:53,777 INFO L225 Difference]: With dead ends: 2352 [2018-11-07 00:21:53,778 INFO L226 Difference]: Without dead ends: 1733 [2018-11-07 00:21:53,784 INFO L604 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 [2018-11-07 00:21:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-11-07 00:21:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-11-07 00:21:53,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-11-07 00:21:53,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2647 transitions. [2018-11-07 00:21:53,845 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2647 transitions. Word has length 133 [2018-11-07 00:21:53,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:21:53,846 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 2647 transitions. [2018-11-07 00:21:53,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:21:53,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2647 transitions. [2018-11-07 00:21:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-07 00:21:53,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:21:53,860 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:21:53,861 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:21:53,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:21:53,861 INFO L82 PathProgramCache]: Analyzing trace with hash 853397474, now seen corresponding path program 1 times [2018-11-07 00:21:53,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:21:53,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:53,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:21:53,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:21:53,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:21:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:21:54,468 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 00:21:54,712 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 60 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:21:54,712 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:21:54,712 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:21:54,713 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-07 00:21:54,716 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [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], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:21:54,791 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:21:54,792 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:21:57,409 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:22:00,110 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:22:00,112 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:22:00,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:22:00,159 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:22:03,215 INFO L227 lantSequenceWeakener]: Weakened 254 states. On average, predicates are now at 77.69% of their original sizes. [2018-11-07 00:22:03,215 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:22:03,680 INFO L415 sIntCurrentIteration]: We unified 261 AI predicates to 261 [2018-11-07 00:22:03,680 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:22:03,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:22:03,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 00:22:03,681 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:22:03,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:22:03,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:22:03,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:22:03,684 INFO L87 Difference]: Start difference. First operand 1733 states and 2647 transitions. Second operand 7 states. [2018-11-07 00:22:18,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:22:18,063 INFO L93 Difference]: Finished difference Result 3645 states and 5568 transitions. [2018-11-07 00:22:18,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:22:18,064 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2018-11-07 00:22:18,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:22:18,077 INFO L225 Difference]: With dead ends: 3645 [2018-11-07 00:22:18,077 INFO L226 Difference]: Without dead ends: 1918 [2018-11-07 00:22:18,087 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 262 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:22:18,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-11-07 00:22:18,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-11-07 00:22:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-07 00:22:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2838 transitions. [2018-11-07 00:22:18,157 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2838 transitions. Word has length 262 [2018-11-07 00:22:18,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:22:18,158 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2838 transitions. [2018-11-07 00:22:18,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:22:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2838 transitions. [2018-11-07 00:22:18,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-07 00:22:18,170 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:22:18,171 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:22:18,171 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:22:18,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:22:18,172 INFO L82 PathProgramCache]: Analyzing trace with hash -438030448, now seen corresponding path program 1 times [2018-11-07 00:22:18,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:22:18,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:22:18,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:22:18,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:22:18,241 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:22:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:22:18,744 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:22:19,089 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:22:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 178 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:22:19,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:22:19,797 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:22:19,797 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-11-07 00:22:19,797 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [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], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:22:19,803 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:22:19,803 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:22:22,518 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:22:27,452 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:22:27,453 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:22:27,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:22:27,482 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:22:30,870 INFO L227 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 78.12% of their original sizes. [2018-11-07 00:22:30,871 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:22:54,307 INFO L415 sIntCurrentIteration]: We unified 346 AI predicates to 346 [2018-11-07 00:22:54,308 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:22:54,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:22:54,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2018-11-07 00:22:54,308 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:22:54,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 00:22:54,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 00:22:54,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2018-11-07 00:22:54,310 INFO L87 Difference]: Start difference. First operand 1916 states and 2838 transitions. Second operand 24 states. [2018-11-07 00:25:17,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:25:17,813 INFO L93 Difference]: Finished difference Result 4206 states and 6181 transitions. [2018-11-07 00:25:17,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 00:25:17,814 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 347 [2018-11-07 00:25:17,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:25:17,826 INFO L225 Difference]: With dead ends: 4206 [2018-11-07 00:25:17,827 INFO L226 Difference]: Without dead ends: 1921 [2018-11-07 00:25:17,837 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 360 GetRequests, 304 SyntacticMatches, 20 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=248, Invalid=1158, Unknown=0, NotChecked=0, Total=1406 [2018-11-07 00:25:17,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2018-11-07 00:25:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1916. [2018-11-07 00:25:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-07 00:25:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2832 transitions. [2018-11-07 00:25:17,948 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2832 transitions. Word has length 347 [2018-11-07 00:25:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:25:17,948 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2832 transitions. [2018-11-07 00:25:17,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-07 00:25:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2832 transitions. [2018-11-07 00:25:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-11-07 00:25:17,960 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:25:17,960 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:25:17,961 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:25:17,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:17,961 INFO L82 PathProgramCache]: Analyzing trace with hash 454839356, now seen corresponding path program 1 times [2018-11-07 00:25:17,961 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:25:17,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:17,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:25:17,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:25:17,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:25:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:25:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 103 proven. 316 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 00:25:19,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:25:19,037 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:25:19,037 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-11-07 00:25:19,037 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], [197], [199], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 00:25:19,042 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:25:19,042 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:25:21,943 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:25:28,802 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:25:28,802 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:25:28,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:25:28,807 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:25:32,953 INFO L227 lantSequenceWeakener]: Weakened 33 states. On average, predicates are now at 81.37% of their original sizes. [2018-11-07 00:25:32,954 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 00:25:37,568 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:25:37,573 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:25:37,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:25:37 BoogieIcfgContainer [2018-11-07 00:25:37,574 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:25:37,575 INFO L168 Benchmark]: Toolchain (without parser) took 237710.29 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 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 00:25:37,577 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:25:37,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 820.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:25:37,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.33 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -810.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:25:37,580 INFO L168 Benchmark]: Boogie Preprocessor took 108.79 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:25:37,581 INFO L168 Benchmark]: RCFGBuilder took 3675.67 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 118.9 MB). Peak memory consumption was 118.9 MB. Max. memory is 7.1 GB. [2018-11-07 00:25:37,583 INFO L168 Benchmark]: TraceAbstraction took 232965.92 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -582.6 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 00:25:37,593 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 820.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 134.33 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -810.1 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.79 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3675.67 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 118.9 MB). Peak memory consumption was 118.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232965.92 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -582.6 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: 94]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 94). Cancelled while BasicCegarLoop was analyzing trace of length 374 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 232.8s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 165.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 829 SDtfs, 3706 SDslu, 650 SDs, 0 SdLazy, 6306 SolverSat, 1146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 67.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 642 GetRequests, 567 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1916occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.9s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9960381785613832 AbsIntWeakeningRatio, 0.09193054136874361 AbsIntAvgWeakeningVarsNumRemoved, 477.34933605720124 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 903 NumberOfCodeBlocks, 903 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 898 ConstructedInterpolants, 0 QuantifiedInterpolants, 2271184 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 308/604 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown