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_label44_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:29:19,769 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:29:19,771 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:29:19,786 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:29:19,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:29:19,787 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:29:19,788 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:29:19,790 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:29:19,792 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:29:19,792 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:29:19,793 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:29:19,794 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:29:19,795 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:29:19,796 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:29:19,797 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:29:19,797 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:29:19,798 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:29:19,803 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:29:19,806 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:29:19,807 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:29:19,810 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:29:19,812 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:29:19,815 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:29:19,831 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:29:19,861 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:29:19,862 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:29:19,863 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:29:19,863 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:29:19,864 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:29:19,864 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:29:19,864 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:29:19,864 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:29:19,864 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:29:19,865 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:29:19,865 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:29:19,865 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:29:19,866 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:29:19,866 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:29:19,866 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:29:19,866 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:29:19,867 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:29:19,867 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:29:19,867 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:29:19,867 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:29:19,867 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:29:19,868 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:29:19,868 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:29:19,868 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:29:19,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:29:19,868 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:29:19,869 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:29:19,869 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:29:19,869 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:29:19,869 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:29:19,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:29:19,870 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:29:19,870 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:29:19,870 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:29:19,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:29:19,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:29:19,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:29:19,957 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:29:19,957 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:29:19,958 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label44_false-unreach-call_false-termination.c [2018-10-23 22:29:20,020 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7842c1fe7/ce2dadb54ba345f284732a98c61e897e/FLAG5b064e943 [2018-10-23 22:29:20,556 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:29:20,557 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label44_false-unreach-call_false-termination.c [2018-10-23 22:29:20,580 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7842c1fe7/ce2dadb54ba345f284732a98c61e897e/FLAG5b064e943 [2018-10-23 22:29:20,596 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7842c1fe7/ce2dadb54ba345f284732a98c61e897e [2018-10-23 22:29:20,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:29:20,609 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:29:20,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:29:20,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:29:20,614 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:29:20,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:29:20" (1/1) ... [2018-10-23 22:29:20,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b8561a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:20, skipping insertion in model container [2018-10-23 22:29:20,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:29:20" (1/1) ... [2018-10-23 22:29:20,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:29:20,717 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:29:21,234 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:29:21,245 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:29:21,401 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:29:21,419 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:29:21,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21 WrapperNode [2018-10-23 22:29:21,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:29:21,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:29:21,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:29:21,421 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:29:21,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (1/1) ... [2018-10-23 22:29:21,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (1/1) ... [2018-10-23 22:29:21,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:29:21,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:29:21,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:29:21,553 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:29:21,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (1/1) ... [2018-10-23 22:29:21,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (1/1) ... [2018-10-23 22:29:21,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (1/1) ... [2018-10-23 22:29:21,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (1/1) ... [2018-10-23 22:29:21,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (1/1) ... [2018-10-23 22:29:21,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (1/1) ... [2018-10-23 22:29:21,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (1/1) ... [2018-10-23 22:29:21,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:29:21,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:29:21,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:29:21,860 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:29:21,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:29:21,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:29:21,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:29:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:29:21,922 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:29:21,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:29:21,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:29:21,923 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:29:21,923 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:29:25,827 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:29:25,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:29:25 BoogieIcfgContainer [2018-10-23 22:29:25,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:29:25,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:29:25,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:29:25,832 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:29:25,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:29:20" (1/3) ... [2018-10-23 22:29:25,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbb85d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:29:25, skipping insertion in model container [2018-10-23 22:29:25,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:29:21" (2/3) ... [2018-10-23 22:29:25,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbb85d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:29:25, skipping insertion in model container [2018-10-23 22:29:25,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:29:25" (3/3) ... [2018-10-23 22:29:25,836 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label44_false-unreach-call_false-termination.c [2018-10-23 22:29:25,846 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:29:25,856 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:29:25,874 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:29:25,913 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:29:25,913 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:29:25,913 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:29:25,914 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:29:25,914 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:29:25,914 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:29:25,914 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:29:25,915 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:29:25,941 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-23 22:29:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-23 22:29:25,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:25,948 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:29:25,951 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:25,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:25,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1864594988, now seen corresponding path program 1 times [2018-10-23 22:29:25,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:26,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:26,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:26,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:26,008 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:26,367 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 22:29:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:26,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:29:26,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:29:26,385 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:26,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:29:26,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:29:26,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:29:26,416 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-23 22:29:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:29,785 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-10-23 22:29:29,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:29:29,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-23 22:29:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:29,814 INFO L225 Difference]: With dead ends: 894 [2018-10-23 22:29:29,815 INFO L226 Difference]: Without dead ends: 633 [2018-10-23 22:29:29,824 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:29:29,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-23 22:29:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-10-23 22:29:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-10-23 22:29:29,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-10-23 22:29:29,916 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 18 [2018-10-23 22:29:29,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:29,917 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-10-23 22:29:29,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:29:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-10-23 22:29:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 22:29:29,923 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:29,923 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:29:29,924 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:29,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:29,924 INFO L82 PathProgramCache]: Analyzing trace with hash 2115592732, now seen corresponding path program 1 times [2018-10-23 22:29:29,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:29,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:29,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:29,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:29,926 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:30,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:29:30,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:29:30,212 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:30,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:29:30,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:29:30,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:29:30,214 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 4 states. [2018-10-23 22:29:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:33,156 INFO L93 Difference]: Finished difference Result 1594 states and 2534 transitions. [2018-10-23 22:29:33,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:29:33,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2018-10-23 22:29:33,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:33,172 INFO L225 Difference]: With dead ends: 1594 [2018-10-23 22:29:33,172 INFO L226 Difference]: Without dead ends: 780 [2018-10-23 22:29:33,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:29:33,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2018-10-23 22:29:33,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2018-10-23 22:29:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2018-10-23 22:29:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1153 transitions. [2018-10-23 22:29:33,289 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1153 transitions. Word has length 102 [2018-10-23 22:29:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:33,290 INFO L481 AbstractCegarLoop]: Abstraction has 780 states and 1153 transitions. [2018-10-23 22:29:33,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:29:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1153 transitions. [2018-10-23 22:29:33,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-23 22:29:33,294 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:33,295 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:29:33,295 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:33,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:33,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1798704196, now seen corresponding path program 1 times [2018-10-23 22:29:33,296 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:33,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:33,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:33,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:33,299 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:29:33,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:29:33,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 22:29:33,919 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:33,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:29:33,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:29:33,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:29:33,921 INFO L87 Difference]: Start difference. First operand 780 states and 1153 transitions. Second operand 7 states. [2018-10-23 22:29:39,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:29:39,411 INFO L93 Difference]: Finished difference Result 2502 states and 3790 transitions. [2018-10-23 22:29:39,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 22:29:39,412 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2018-10-23 22:29:39,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:29:39,429 INFO L225 Difference]: With dead ends: 2502 [2018-10-23 22:29:39,429 INFO L226 Difference]: Without dead ends: 1728 [2018-10-23 22:29:39,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2018-10-23 22:29:39,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2018-10-23 22:29:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1659. [2018-10-23 22:29:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1659 states. [2018-10-23 22:29:39,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2352 transitions. [2018-10-23 22:29:39,513 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2352 transitions. Word has length 114 [2018-10-23 22:29:39,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:29:39,513 INFO L481 AbstractCegarLoop]: Abstraction has 1659 states and 2352 transitions. [2018-10-23 22:29:39,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:29:39,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2352 transitions. [2018-10-23 22:29:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-23 22:29:39,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:29:39,520 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:29:39,521 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:29:39,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:39,521 INFO L82 PathProgramCache]: Analyzing trace with hash 47001231, now seen corresponding path program 1 times [2018-10-23 22:29:39,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:29:39,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:39,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:29:39,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:29:39,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:29:39,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:29:39,809 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:29:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 22:29:39,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:29:39,849 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:29:39,850 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-23 22:29:39,852 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [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], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:29:39,920 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:29:39,920 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:29:42,053 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:29:42,055 INFO L272 AbstractInterpreter]: Visited 101 different actions 101 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:29:42,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:29:42,070 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:29:43,933 INFO L232 lantSequenceWeakener]: Weakened 177 states. On average, predicates are now at 77.38% of their original sizes. [2018-10-23 22:29:43,935 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:29:44,308 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:29:44,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:29:44,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-23 22:29:44,310 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:29:44,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:29:44,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:29:44,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:29:44,311 INFO L87 Difference]: Start difference. First operand 1659 states and 2352 transitions. Second operand 7 states. [2018-10-23 22:29:46,273 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:30:12,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:30:12,114 INFO L93 Difference]: Finished difference Result 3497 states and 4919 transitions. [2018-10-23 22:30:12,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:30:12,114 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2018-10-23 22:30:12,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:30:12,123 INFO L225 Difference]: With dead ends: 3497 [2018-10-23 22:30:12,123 INFO L226 Difference]: Without dead ends: 1844 [2018-10-23 22:30:12,129 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 185 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:30:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2018-10-23 22:30:12,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2018-10-23 22:30:12,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1842 states. [2018-10-23 22:30:12,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2543 transitions. [2018-10-23 22:30:12,178 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2543 transitions. Word has length 185 [2018-10-23 22:30:12,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:30:12,179 INFO L481 AbstractCegarLoop]: Abstraction has 1842 states and 2543 transitions. [2018-10-23 22:30:12,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 22:30:12,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2543 transitions. [2018-10-23 22:30:12,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-23 22:30:12,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:30:12,182 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:30:12,183 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:30:12,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:30:12,183 INFO L82 PathProgramCache]: Analyzing trace with hash -489192109, now seen corresponding path program 1 times [2018-10-23 22:30:12,183 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:30:12,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:12,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:30:12,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:30:12,185 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:30:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:30:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:30:12,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:30:12,943 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:30:12,943 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-10-23 22:30:12,944 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [45], [47], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-23 22:30:12,949 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:30:12,949 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:30:16,316 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:30:16,317 INFO L272 AbstractInterpreter]: Visited 104 different actions 201 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:30:16,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:30:16,319 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:30:18,028 INFO L232 lantSequenceWeakener]: Weakened 62 states. On average, predicates are now at 78.06% of their original sizes. [2018-10-23 22:30:18,028 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:30:39,918 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:30:39,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:30:39,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-10-23 22:30:39,919 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:30:39,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-23 22:30:39,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-23 22:30:39,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-10-23 22:30:39,921 INFO L87 Difference]: Start difference. First operand 1842 states and 2543 transitions. Second operand 20 states. [2018-10-23 22:31:48,672 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-23 22:33:11,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-23 22:33:11,184 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:33:11,191 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:33:11,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:33:11 BoogieIcfgContainer [2018-10-23 22:33:11,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:33:11,193 INFO L168 Benchmark]: Toolchain (without parser) took 230584.74 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 2.8 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 22:33:11,194 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 22:33:11,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 810.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:33:11,196 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.90 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:33:11,196 INFO L168 Benchmark]: Boogie Preprocessor took 305.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -879.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:33:11,197 INFO L168 Benchmark]: RCFGBuilder took 3969.19 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: 122.8 MB). Peak memory consumption was 122.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:33:11,198 INFO L168 Benchmark]: TraceAbstraction took 225363.08 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -649.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 22:33:11,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 810.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 131.90 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 305.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -879.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3969.19 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: 122.8 MB). Peak memory consumption was 122.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225363.08 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -649.2 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 37). Cancelled while BasicCegarLoop was constructing difference of abstraction (1842states) and FLOYD_HOARE automaton (currently 23 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (3236 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 225.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 191.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 839 SDtfs, 4051 SDslu, 853 SDs, 0 SdLazy, 7595 SolverSat, 1039 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 415 GetRequests, 348 SyntacticMatches, 22 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 24.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1842occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9942711890128233 AbsIntWeakeningRatio, 0.13612565445026178 AbsIntAvgWeakeningVarsNumRemoved, 611.4816753926701 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 270 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 618 NumberOfCodeBlocks, 618 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 613 ConstructedInterpolants, 0 QuantifiedInterpolants, 1111390 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 154/222 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown