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/Problem10_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 02:45:00,886 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 02:45:00,888 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 02:45:00,900 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 02:45:00,901 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 02:45:00,902 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 02:45:00,903 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 02:45:00,905 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 02:45:00,907 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 02:45:00,907 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 02:45:00,908 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 02:45:00,909 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 02:45:00,910 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 02:45:00,911 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 02:45:00,912 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 02:45:00,913 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 02:45:00,914 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 02:45:00,915 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 02:45:00,917 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 02:45:00,919 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 02:45:00,920 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 02:45:00,921 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 02:45:00,924 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 02:45:00,932 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 02:45:00,958 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 02:45:00,958 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 02:45:00,959 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 02:45:00,959 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 02:45:00,960 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 02:45:00,960 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 02:45:00,960 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 02:45:00,960 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 02:45:00,961 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 02:45:00,961 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 02:45:00,961 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 02:45:00,961 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 02:45:00,962 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 02:45:00,962 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 02:45:00,962 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 02:45:00,962 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 02:45:00,963 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 02:45:00,963 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 02:45:00,963 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 02:45:00,963 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 02:45:00,963 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 02:45:00,964 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 02:45:00,964 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 02:45:00,964 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 02:45:00,964 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 02:45:00,964 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 02:45:00,965 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 02:45:00,965 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 02:45:00,965 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 02:45:00,965 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 02:45:00,965 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 02:45:00,966 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 02:45:00,966 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 02:45:00,966 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 02:45:01,017 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 02:45:01,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 02:45:01,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 02:45:01,044 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 02:45:01,045 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 02:45:01,046 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20_true-unreach-call.c [2018-11-07 02:45:01,116 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341d90953/112cd4b590a0415c8907cec92f9edfbd/FLAGc52018a88 [2018-11-07 02:45:01,702 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 02:45:01,705 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label20_true-unreach-call.c [2018-11-07 02:45:01,719 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341d90953/112cd4b590a0415c8907cec92f9edfbd/FLAGc52018a88 [2018-11-07 02:45:01,735 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/341d90953/112cd4b590a0415c8907cec92f9edfbd [2018-11-07 02:45:01,747 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 02:45:01,749 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 02:45:01,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 02:45:01,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 02:45:01,754 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 02:45:01,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:01" (1/1) ... [2018-11-07 02:45:01,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da72689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:01, skipping insertion in model container [2018-11-07 02:45:01,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:45:01" (1/1) ... [2018-11-07 02:45:01,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 02:45:01,829 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 02:45:02,376 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:45:02,381 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 02:45:02,517 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 02:45:02,546 INFO L193 MainTranslator]: Completed translation [2018-11-07 02:45:02,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02 WrapperNode [2018-11-07 02:45:02,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 02:45:02,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 02:45:02,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 02:45:02,548 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 02:45:02,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (1/1) ... [2018-11-07 02:45:02,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (1/1) ... [2018-11-07 02:45:02,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 02:45:02,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 02:45:02,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 02:45:02,690 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 02:45:02,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (1/1) ... [2018-11-07 02:45:02,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (1/1) ... [2018-11-07 02:45:02,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (1/1) ... [2018-11-07 02:45:02,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (1/1) ... [2018-11-07 02:45:02,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (1/1) ... [2018-11-07 02:45:02,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (1/1) ... [2018-11-07 02:45:02,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (1/1) ... [2018-11-07 02:45:02,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 02:45:02,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 02:45:02,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 02:45:02,805 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 02:45:02,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (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 02:45:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 02:45:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 02:45:02,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 02:45:02,873 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 02:45:02,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 02:45:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 02:45:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 02:45:02,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 02:45:02,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 02:45:06,079 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 02:45:06,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:06 BoogieIcfgContainer [2018-11-07 02:45:06,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 02:45:06,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 02:45:06,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 02:45:06,087 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 02:45:06,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:45:01" (1/3) ... [2018-11-07 02:45:06,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf96276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:06, skipping insertion in model container [2018-11-07 02:45:06,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:45:02" (2/3) ... [2018-11-07 02:45:06,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf96276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:45:06, skipping insertion in model container [2018-11-07 02:45:06,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:45:06" (3/3) ... [2018-11-07 02:45:06,093 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label20_true-unreach-call.c [2018-11-07 02:45:06,106 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 02:45:06,118 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 02:45:06,140 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 02:45:06,191 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 02:45:06,191 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 02:45:06,192 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 02:45:06,192 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 02:45:06,192 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 02:45:06,192 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 02:45:06,193 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 02:45:06,193 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 02:45:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-11-07 02:45:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-07 02:45:06,249 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:06,250 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] [2018-11-07 02:45:06,255 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:06,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:06,266 INFO L82 PathProgramCache]: Analyzing trace with hash -2089647903, now seen corresponding path program 1 times [2018-11-07 02:45:06,269 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:06,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:06,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:06,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:06,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:06,799 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:45:06,822 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 02:45:06,825 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:06,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 02:45:06,826 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:06,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 02:45:06,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 02:45:06,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:45:06,850 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-11-07 02:45:08,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:08,920 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-11-07 02:45:08,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 02:45:08,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-07 02:45:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:08,941 INFO L225 Difference]: With dead ends: 574 [2018-11-07 02:45:08,942 INFO L226 Difference]: Without dead ends: 356 [2018-11-07 02:45:08,950 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 02:45:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-11-07 02:45:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-11-07 02:45:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-11-07 02:45:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-11-07 02:45:09,040 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 35 [2018-11-07 02:45:09,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:09,041 INFO L480 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-11-07 02:45:09,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 02:45:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-11-07 02:45:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 02:45:09,056 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:09,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:09,057 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:09,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:09,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1879649099, now seen corresponding path program 1 times [2018-11-07 02:45:09,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:09,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:09,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:09,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:09,062 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:09,497 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:09,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:09,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 02:45:09,498 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:09,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 02:45:09,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 02:45:09,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 02:45:09,502 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-11-07 02:45:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:12,140 INFO L93 Difference]: Finished difference Result 1288 states and 2312 transitions. [2018-11-07 02:45:12,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 02:45:12,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-11-07 02:45:12,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:12,150 INFO L225 Difference]: With dead ends: 1288 [2018-11-07 02:45:12,150 INFO L226 Difference]: Without dead ends: 938 [2018-11-07 02:45:12,157 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 02:45:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2018-11-07 02:45:12,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 923. [2018-11-07 02:45:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 923 states. [2018-11-07 02:45:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1440 transitions. [2018-11-07 02:45:12,232 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1440 transitions. Word has length 118 [2018-11-07 02:45:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:12,233 INFO L480 AbstractCegarLoop]: Abstraction has 923 states and 1440 transitions. [2018-11-07 02:45:12,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 02:45:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1440 transitions. [2018-11-07 02:45:12,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 02:45:12,239 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:12,239 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:12,239 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:12,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:12,240 INFO L82 PathProgramCache]: Analyzing trace with hash 820065387, now seen corresponding path program 1 times [2018-11-07 02:45:12,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:12,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:12,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:12,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:12,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:12,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:12,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:45:12,486 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:12,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:45:12,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:45:12,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:45:12,488 INFO L87 Difference]: Start difference. First operand 923 states and 1440 transitions. Second operand 6 states. [2018-11-07 02:45:16,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:16,257 INFO L93 Difference]: Finished difference Result 2531 states and 4077 transitions. [2018-11-07 02:45:16,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:45:16,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-11-07 02:45:16,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:16,270 INFO L225 Difference]: With dead ends: 2531 [2018-11-07 02:45:16,273 INFO L226 Difference]: Without dead ends: 1614 [2018-11-07 02:45:16,281 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:45:16,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2018-11-07 02:45:16,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1583. [2018-11-07 02:45:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2018-11-07 02:45:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2316 transitions. [2018-11-07 02:45:16,358 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2316 transitions. Word has length 134 [2018-11-07 02:45:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:16,359 INFO L480 AbstractCegarLoop]: Abstraction has 1583 states and 2316 transitions. [2018-11-07 02:45:16,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:45:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2316 transitions. [2018-11-07 02:45:16,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 02:45:16,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:16,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:45:16,367 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:16,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:16,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1308687845, now seen corresponding path program 1 times [2018-11-07 02:45:16,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:16,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:16,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:16,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:16,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:16,661 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 02:45:16,712 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:16,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 02:45:16,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 02:45:16,713 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:16,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 02:45:16,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 02:45:16,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 02:45:16,714 INFO L87 Difference]: Start difference. First operand 1583 states and 2316 transitions. Second operand 6 states. [2018-11-07 02:45:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:45:18,099 INFO L93 Difference]: Finished difference Result 3502 states and 5312 transitions. [2018-11-07 02:45:18,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 02:45:18,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-11-07 02:45:18,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:45:18,128 INFO L225 Difference]: With dead ends: 3502 [2018-11-07 02:45:18,129 INFO L226 Difference]: Without dead ends: 1925 [2018-11-07 02:45:18,136 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 02:45:18,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2018-11-07 02:45:18,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1884. [2018-11-07 02:45:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2018-11-07 02:45:18,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2676 transitions. [2018-11-07 02:45:18,214 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2676 transitions. Word has length 158 [2018-11-07 02:45:18,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:45:18,215 INFO L480 AbstractCegarLoop]: Abstraction has 1884 states and 2676 transitions. [2018-11-07 02:45:18,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 02:45:18,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2676 transitions. [2018-11-07 02:45:18,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 02:45:18,224 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:45:18,224 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 02:45:18,224 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:45:18,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:18,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1100982905, now seen corresponding path program 1 times [2018-11-07 02:45:18,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:45:18,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:18,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:45:18,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:45:18,226 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:45:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:45:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:45:18,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:45:18,804 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:45:18,806 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 190 with the following transitions: [2018-11-07 02:45:18,808 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], [181], [183], [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], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:45:18,880 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:45:18,880 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:45:21,264 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 02:45:26,063 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 02:45:26,065 INFO L272 AbstractInterpreter]: Visited 91 different actions 260 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 02:45:26,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:45:26,104 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 02:45:28,499 INFO L227 lantSequenceWeakener]: Weakened 47 states. On average, predicates are now at 75.77% of their original sizes. [2018-11-07 02:45:28,499 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 02:45:37,945 INFO L415 sIntCurrentIteration]: We unified 188 AI predicates to 188 [2018-11-07 02:45:37,946 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 02:45:37,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 02:45:37,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 02:45:37,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 02:45:37,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 02:45:37,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 02:45:37,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-11-07 02:45:37,949 INFO L87 Difference]: Start difference. First operand 1884 states and 2676 transitions. Second operand 21 states. [2018-11-07 02:48:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 02:48:36,854 INFO L93 Difference]: Finished difference Result 4889 states and 7070 transitions. [2018-11-07 02:48:36,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 02:48:36,855 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 189 [2018-11-07 02:48:36,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 02:48:36,870 INFO L225 Difference]: With dead ends: 4889 [2018-11-07 02:48:36,870 INFO L226 Difference]: Without dead ends: 3011 [2018-11-07 02:48:36,881 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 165 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2018-11-07 02:48:36,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2018-11-07 02:48:37,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 2330. [2018-11-07 02:48:37,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2330 states. [2018-11-07 02:48:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 3167 transitions. [2018-11-07 02:48:37,051 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 3167 transitions. Word has length 189 [2018-11-07 02:48:37,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 02:48:37,051 INFO L480 AbstractCegarLoop]: Abstraction has 2330 states and 3167 transitions. [2018-11-07 02:48:37,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 02:48:37,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 3167 transitions. [2018-11-07 02:48:37,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-07 02:48:37,056 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 02:48:37,057 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 02:48:37,057 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 02:48:37,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 02:48:37,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1928767200, now seen corresponding path program 1 times [2018-11-07 02:48:37,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 02:48:37,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:48:37,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:48:37,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 02:48:37,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 02:48:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:48:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 02:48:37,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:48:37,568 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 02:48:37,569 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-11-07 02:48:37,569 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], [181], [183], [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], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-11-07 02:48:37,573 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 02:48:37,574 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 02:48:39,232 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 02:48:48,824 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 02:48:48,825 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 02:48:48,826 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 02:48:48,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 02:48:48,826 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 02:48:48,841 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 02:48:48,841 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 02:48:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 02:48:48,930 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 02:48:48,974 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 02:48:49,177 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 02:48:49,177 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 02:48:49,183 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 02:48:49,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:48:49 BoogieIcfgContainer [2018-11-07 02:48:49,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 02:48:49,185 INFO L168 Benchmark]: Toolchain (without parser) took 227436.93 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 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 964.6 MB. Max. memory is 7.1 GB. [2018-11-07 02:48:49,186 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 02:48:49,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 797.21 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 02:48:49,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 141.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2018-11-07 02:48:49,189 INFO L168 Benchmark]: Boogie Preprocessor took 115.12 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 02:48:49,189 INFO L168 Benchmark]: RCFGBuilder took 3276.37 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: 106.4 MB). Peak memory consumption was 106.4 MB. Max. memory is 7.1 GB. [2018-11-07 02:48:49,190 INFO L168 Benchmark]: TraceAbstraction took 223101.24 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -979.6 MB). Peak memory consumption was 902.0 MB. Max. memory is 7.1 GB. [2018-11-07 02:48:49,195 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 797.21 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 141.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -785.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.12 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 3276.37 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: 106.4 MB). Peak memory consumption was 106.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223101.24 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -979.6 MB). Peak memory consumption was 902.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 88). Cancelled while BasicCegarLoop was analyzing trace of length 199 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 223.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 188.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 543 SDtfs, 5298 SDslu, 504 SDs, 0 SdLazy, 5730 SolverSat, 1339 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 103.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 242 GetRequests, 174 SyntacticMatches, 8 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 17.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2330occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.5s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.993726873265495 AbsIntWeakeningRatio, 0.13829787234042554 AbsIntAvgWeakeningVarsNumRemoved, 766.936170212766 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 768 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 634 NumberOfCodeBlocks, 634 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 629 ConstructedInterpolants, 0 QuantifiedInterpolants, 382346 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 209/211 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown