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/Problem02_label24_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:49:42,771 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:49:42,774 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:49:42,786 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:49:42,787 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:49:42,788 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:49:42,789 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:49:42,791 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:49:42,792 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:49:42,793 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:49:42,794 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:49:42,795 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:49:42,795 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:49:42,797 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:49:42,798 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:49:42,798 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:49:42,799 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:49:42,801 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:49:42,803 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:49:42,805 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:49:42,806 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:49:42,807 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:49:42,810 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:49:42,819 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 [2018-10-27 00:49:42,846 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:49:42,847 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:49:42,848 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:49:42,848 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:49:42,848 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:49:42,849 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:49:42,849 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:49:42,849 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:49:42,850 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:49:42,850 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:49:42,850 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:49:42,850 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:49:42,851 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:49:42,851 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:49:42,851 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:49:42,852 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:49:42,852 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:49:42,853 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:49:42,853 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:49:42,853 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:49:42,853 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:49:42,853 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:49:42,854 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:49:42,854 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:49:42,854 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:49:42,854 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:49:42,854 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:49:42,855 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:49:42,855 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:49:42,856 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:49:42,856 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:49:42,856 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:49:42,856 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:49:42,857 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:49:42,910 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:49:42,926 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:49:42,930 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:49:42,931 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:49:42,932 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:49:42,933 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label24_true-unreach-call_false-termination.c [2018-10-27 00:49:43,001 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef9edbe55/cb9b74f114f34931aea66b78f3cc051c/FLAG0742fdba3 [2018-10-27 00:49:43,605 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:49:43,606 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label24_true-unreach-call_false-termination.c [2018-10-27 00:49:43,620 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef9edbe55/cb9b74f114f34931aea66b78f3cc051c/FLAG0742fdba3 [2018-10-27 00:49:43,636 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef9edbe55/cb9b74f114f34931aea66b78f3cc051c [2018-10-27 00:49:43,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:49:43,649 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:49:43,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:49:43,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:49:43,655 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:49:43,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:49:43" (1/1) ... [2018-10-27 00:49:43,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8d5e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:43, skipping insertion in model container [2018-10-27 00:49:43,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:49:43" (1/1) ... [2018-10-27 00:49:43,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:49:43,728 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:49:44,211 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:49:44,222 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:49:44,360 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:49:44,381 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:49:44,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44 WrapperNode [2018-10-27 00:49:44,382 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:49:44,383 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:49:44,383 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:49:44,383 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:49:44,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (1/1) ... [2018-10-27 00:49:44,410 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (1/1) ... [2018-10-27 00:49:44,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:49:44,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:49:44,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:49:44,570 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:49:44,581 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (1/1) ... [2018-10-27 00:49:44,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (1/1) ... [2018-10-27 00:49:44,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (1/1) ... [2018-10-27 00:49:44,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (1/1) ... [2018-10-27 00:49:44,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (1/1) ... [2018-10-27 00:49:44,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (1/1) ... [2018-10-27 00:49:44,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (1/1) ... [2018-10-27 00:49:44,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:49:44,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:49:44,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:49:44,684 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:49:44,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (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 [2018-10-27 00:49:44,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:49:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:49:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:49:44,760 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:49:44,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:49:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:49:44,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:49:44,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:49:48,360 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:49:48,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:49:48 BoogieIcfgContainer [2018-10-27 00:49:48,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:49:48,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:49:48,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:49:48,366 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:49:48,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:49:43" (1/3) ... [2018-10-27 00:49:48,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:49:48, skipping insertion in model container [2018-10-27 00:49:48,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:49:44" (2/3) ... [2018-10-27 00:49:48,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5e1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:49:48, skipping insertion in model container [2018-10-27 00:49:48,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:49:48" (3/3) ... [2018-10-27 00:49:48,370 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label24_true-unreach-call_false-termination.c [2018-10-27 00:49:48,381 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:49:48,393 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:49:48,408 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:49:48,449 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:49:48,449 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:49:48,450 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:49:48,450 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:49:48,450 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:49:48,450 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:49:48,450 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:49:48,451 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:49:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-27 00:49:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 00:49:48,498 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:49:48,500 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:49:48,502 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:49:48,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:49:48,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1658764377, now seen corresponding path program 1 times [2018-10-27 00:49:48,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:49:48,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:49:48,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:49:48,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:49:48,562 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:49:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:49:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:49:49,161 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:49:49,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:49:49,162 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:49:49,168 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:49:49,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:49:49,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:49:49,189 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-27 00:49:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:49:50,897 INFO L93 Difference]: Finished difference Result 621 states and 1060 transitions. [2018-10-27 00:49:50,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:49:50,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2018-10-27 00:49:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:49:50,921 INFO L225 Difference]: With dead ends: 621 [2018-10-27 00:49:50,922 INFO L226 Difference]: Without dead ends: 382 [2018-10-27 00:49:50,929 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:49:50,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-27 00:49:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 381. [2018-10-27 00:49:51,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-10-27 00:49:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 637 transitions. [2018-10-27 00:49:51,015 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 637 transitions. Word has length 121 [2018-10-27 00:49:51,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:49:51,017 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 637 transitions. [2018-10-27 00:49:51,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:49:51,017 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 637 transitions. [2018-10-27 00:49:51,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-27 00:49:51,024 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:49:51,024 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:49:51,025 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:49:51,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:49:51,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1422747334, now seen corresponding path program 1 times [2018-10-27 00:49:51,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:49:51,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:49:51,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:49:51,028 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:49:51,028 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:49:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:49:51,527 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 00:49:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:49:51,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:49:51,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:49:51,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:49:51,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:49:51,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:49:51,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:49:51,633 INFO L87 Difference]: Start difference. First operand 381 states and 637 transitions. Second operand 5 states. [2018-10-27 00:49:53,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:49:53,195 INFO L93 Difference]: Finished difference Result 901 states and 1555 transitions. [2018-10-27 00:49:53,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:49:53,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-27 00:49:53,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:49:53,202 INFO L225 Difference]: With dead ends: 901 [2018-10-27 00:49:53,202 INFO L226 Difference]: Without dead ends: 380 [2018-10-27 00:49:53,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:49:53,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-10-27 00:49:53,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-10-27 00:49:53,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-27 00:49:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 632 transitions. [2018-10-27 00:49:53,237 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 632 transitions. Word has length 130 [2018-10-27 00:49:53,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:49:53,238 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 632 transitions. [2018-10-27 00:49:53,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:49:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 632 transitions. [2018-10-27 00:49:53,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-27 00:49:53,242 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:49:53,242 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:49:53,243 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:49:53,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:49:53,243 INFO L82 PathProgramCache]: Analyzing trace with hash -2099227971, now seen corresponding path program 1 times [2018-10-27 00:49:53,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:49:53,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:49:53,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:49:53,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:49:53,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:49:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:49:53,517 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:49:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:49:53,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:49:53,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:49:53,660 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:49:53,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:49:53,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:49:53,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:49:53,662 INFO L87 Difference]: Start difference. First operand 380 states and 632 transitions. Second operand 6 states. [2018-10-27 00:49:56,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:49:56,439 INFO L93 Difference]: Finished difference Result 1184 states and 2066 transitions. [2018-10-27 00:49:56,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:49:56,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-27 00:49:56,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:49:56,454 INFO L225 Difference]: With dead ends: 1184 [2018-10-27 00:49:56,455 INFO L226 Difference]: Without dead ends: 810 [2018-10-27 00:49:56,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:49:56,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2018-10-27 00:49:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 800. [2018-10-27 00:49:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-10-27 00:49:56,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1274 transitions. [2018-10-27 00:49:56,542 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1274 transitions. Word has length 155 [2018-10-27 00:49:56,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:49:56,542 INFO L481 AbstractCegarLoop]: Abstraction has 800 states and 1274 transitions. [2018-10-27 00:49:56,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:49:56,543 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1274 transitions. [2018-10-27 00:49:56,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-27 00:49:56,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:49:56,549 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:49:56,549 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:49:56,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:49:56,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1213735243, now seen corresponding path program 1 times [2018-10-27 00:49:56,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:49:56,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:49:56,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:49:56,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:49:56,552 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:49:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:49:56,776 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:49:56,777 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:49:56,777 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:49:56,777 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:49:56,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:49:56,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:49:56,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:49:56,779 INFO L87 Difference]: Start difference. First operand 800 states and 1274 transitions. Second operand 3 states. [2018-10-27 00:49:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:49:58,512 INFO L93 Difference]: Finished difference Result 2306 states and 3791 transitions. [2018-10-27 00:49:58,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:49:58,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-10-27 00:49:58,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:49:58,524 INFO L225 Difference]: With dead ends: 2306 [2018-10-27 00:49:58,524 INFO L226 Difference]: Without dead ends: 1512 [2018-10-27 00:49:58,529 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:49:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2018-10-27 00:49:58,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1507. [2018-10-27 00:49:58,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2018-10-27 00:49:58,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2312 transitions. [2018-10-27 00:49:58,601 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2312 transitions. Word has length 156 [2018-10-27 00:49:58,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:49:58,603 INFO L481 AbstractCegarLoop]: Abstraction has 1507 states and 2312 transitions. [2018-10-27 00:49:58,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:49:58,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2312 transitions. [2018-10-27 00:49:58,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-27 00:49:58,611 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:49:58,612 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:49:58,612 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:49:58,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:49:58,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1427113375, now seen corresponding path program 1 times [2018-10-27 00:49:58,613 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:49:58,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:49:58,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:49:58,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:49:58,614 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:49:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:49:59,386 WARN L179 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-10-27 00:49:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:49:59,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:49:59,459 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:49:59,460 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 174 with the following transitions: [2018-10-27 00:49:59,462 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [198], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [639], [641], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-27 00:49:59,557 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:49:59,558 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:50:26,880 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:50:26,881 INFO L272 AbstractInterpreter]: Visited 124 different actions 242 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-27 00:50:26,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:50:26,893 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:50:34,015 INFO L227 lantSequenceWeakener]: Weakened 62 states. On average, predicates are now at 82.39% of their original sizes. [2018-10-27 00:50:34,015 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:51:35,388 INFO L415 sIntCurrentIteration]: We unified 172 AI predicates to 172 [2018-10-27 00:51:35,389 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:51:35,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:51:35,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-27 00:51:35,390 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:51:35,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-27 00:51:35,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-27 00:51:35,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-10-27 00:51:35,392 INFO L87 Difference]: Start difference. First operand 1507 states and 2312 transitions. Second operand 18 states. Received shutdown request... [2018-10-27 00:54:02,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-27 00:54:02,691 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:54:02,696 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:54:02,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:54:02 BoogieIcfgContainer [2018-10-27 00:54:02,697 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:54:02,698 INFO L168 Benchmark]: Toolchain (without parser) took 259049.44 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 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 572.5 MB. Max. memory is 7.1 GB. [2018-10-27 00:54:02,699 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-27 00:54:02,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.51 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:54:02,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 186.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:54:02,701 INFO L168 Benchmark]: Boogie Preprocessor took 113.60 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:54:02,702 INFO L168 Benchmark]: RCFGBuilder took 3678.06 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: 115.5 MB). Peak memory consumption was 115.5 MB. Max. memory is 7.1 GB. [2018-10-27 00:54:02,703 INFO L168 Benchmark]: TraceAbstraction took 254334.31 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -894.6 MB). Peak memory consumption was 501.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:54:02,708 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.51 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 186.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -836.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.60 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3678.06 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: 115.5 MB). Peak memory consumption was 115.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254334.31 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 3.0 GB in the end (delta: -894.6 MB). Peak memory consumption was 501.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 514]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 514). Cancelled while BasicCegarLoop was constructing difference of abstraction (1507states) and FLOYD_HOARE automaton (currently 23 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1161 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 254.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 155.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 858 SDtfs, 2598 SDslu, 328 SDs, 0 SdLazy, 3244 SolverSat, 753 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 207 GetRequests, 142 SyntacticMatches, 28 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 70.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1507occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 27.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9955464950874989 AbsIntWeakeningRatio, 0.1569767441860465 AbsIntAvgWeakeningVarsNumRemoved, 1272.9709302325582 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 16 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 735 NumberOfCodeBlocks, 735 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 730 ConstructedInterpolants, 0 QuantifiedInterpolants, 495484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 113/118 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown