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 0.1.23-0fd1304 [2018-10-23 23:21:48,066 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:21:48,069 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:21:48,085 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:21:48,086 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:21:48,087 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:21:48,089 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:21:48,091 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:21:48,092 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:21:48,093 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:21:48,094 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:21:48,094 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:21:48,095 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:21:48,096 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:21:48,097 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:21:48,098 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:21:48,099 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:21:48,101 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:21:48,103 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:21:48,104 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:21:48,105 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:21:48,107 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:21:48,109 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:21:48,118 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 23:21:48,145 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:21:48,146 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:21:48,147 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:21:48,147 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:21:48,148 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:21:48,148 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:21:48,148 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:21:48,148 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:21:48,148 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:21:48,149 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:21:48,149 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:21:48,149 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:21:48,150 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:21:48,150 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:21:48,150 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:21:48,150 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:21:48,150 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:21:48,151 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:21:48,153 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:21:48,153 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:21:48,153 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:21:48,154 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:21:48,154 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:21:48,154 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:21:48,154 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:21:48,154 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:21:48,155 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:21:48,155 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:21:48,155 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:21:48,155 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:21:48,155 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:21:48,156 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:21:48,156 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:21:48,156 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:21:48,203 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:21:48,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:21:48,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:21:48,224 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:21:48,224 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:21:48,225 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label24_true-unreach-call_false-termination.c [2018-10-23 23:21:48,301 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3c3c9d395/8f8ffbdd8113497f88e44e2efd0af082/FLAGbf8e30cae [2018-10-23 23:21:48,861 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:21:48,861 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label24_true-unreach-call_false-termination.c [2018-10-23 23:21:48,886 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3c3c9d395/8f8ffbdd8113497f88e44e2efd0af082/FLAGbf8e30cae [2018-10-23 23:21:48,900 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3c3c9d395/8f8ffbdd8113497f88e44e2efd0af082 [2018-10-23 23:21:48,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:21:48,915 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:21:48,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:21:48,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:21:48,921 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:21:48,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:21:48" (1/1) ... [2018-10-23 23:21:48,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@307950ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:48, skipping insertion in model container [2018-10-23 23:21:48,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:21:48" (1/1) ... [2018-10-23 23:21:48,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:21:49,004 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:21:49,544 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:21:49,548 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:21:49,649 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:21:49,669 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:21:49,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49 WrapperNode [2018-10-23 23:21:49,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:21:49,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:21:49,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:21:49,671 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:21:49,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (1/1) ... [2018-10-23 23:21:49,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (1/1) ... [2018-10-23 23:21:49,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:21:49,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:21:49,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:21:49,894 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:21:49,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (1/1) ... [2018-10-23 23:21:49,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (1/1) ... [2018-10-23 23:21:49,910 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (1/1) ... [2018-10-23 23:21:49,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (1/1) ... [2018-10-23 23:21:49,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (1/1) ... [2018-10-23 23:21:49,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (1/1) ... [2018-10-23 23:21:49,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (1/1) ... [2018-10-23 23:21:49,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:21:49,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:21:49,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:21:49,981 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:21:49,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:21:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:21:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:21:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:21:50,066 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:21:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:21:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:21:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:21:50,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:21:53,729 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:21:53,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:21:53 BoogieIcfgContainer [2018-10-23 23:21:53,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:21:53,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:21:53,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:21:53,739 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:21:53,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:21:48" (1/3) ... [2018-10-23 23:21:53,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d97aa8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:21:53, skipping insertion in model container [2018-10-23 23:21:53,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:49" (2/3) ... [2018-10-23 23:21:53,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d97aa8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:21:53, skipping insertion in model container [2018-10-23 23:21:53,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:21:53" (3/3) ... [2018-10-23 23:21:53,745 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label24_true-unreach-call_false-termination.c [2018-10-23 23:21:53,755 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:21:53,765 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:21:53,783 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:21:53,830 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:21:53,830 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:21:53,830 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:21:53,831 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:21:53,831 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:21:53,831 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:21:53,831 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:21:53,831 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:21:53,870 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:21:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-23 23:21:53,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:53,888 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] [2018-10-23 23:21:53,891 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:53,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:53,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1658764377, now seen corresponding path program 1 times [2018-10-23 23:21:53,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:53,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:53,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:53,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:53,955 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:54,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:54,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:54,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:21:54,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:54,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:21:54,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:21:54,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:21:54,761 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:21:56,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:56,626 INFO L93 Difference]: Finished difference Result 621 states and 1060 transitions. [2018-10-23 23:21:56,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:21:56,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2018-10-23 23:21:56,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:56,651 INFO L225 Difference]: With dead ends: 621 [2018-10-23 23:21:56,651 INFO L226 Difference]: Without dead ends: 382 [2018-10-23 23:21:56,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:21:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-23 23:21:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 381. [2018-10-23 23:21:56,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-10-23 23:21:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 637 transitions. [2018-10-23 23:21:56,757 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 637 transitions. Word has length 121 [2018-10-23 23:21:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:56,759 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 637 transitions. [2018-10-23 23:21:56,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:21:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 637 transitions. [2018-10-23 23:21:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-23 23:21:56,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:56,767 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] [2018-10-23 23:21:56,767 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:56,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:56,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1422747334, now seen corresponding path program 1 times [2018-10-23 23:21:56,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:56,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:56,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:56,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:56,770 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:57,221 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-23 23:21:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:57,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:57,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:21:57,343 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:57,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:21:57,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:21:57,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:21:57,347 INFO L87 Difference]: Start difference. First operand 381 states and 637 transitions. Second operand 5 states. [2018-10-23 23:21:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:59,051 INFO L93 Difference]: Finished difference Result 901 states and 1555 transitions. [2018-10-23 23:21:59,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:21:59,054 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-23 23:21:59,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:59,059 INFO L225 Difference]: With dead ends: 901 [2018-10-23 23:21:59,060 INFO L226 Difference]: Without dead ends: 380 [2018-10-23 23:21:59,064 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 [2018-10-23 23:21:59,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-10-23 23:21:59,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-10-23 23:21:59,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-23 23:21:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 632 transitions. [2018-10-23 23:21:59,090 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 632 transitions. Word has length 130 [2018-10-23 23:21:59,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:59,090 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 632 transitions. [2018-10-23 23:21:59,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:21:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 632 transitions. [2018-10-23 23:21:59,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-23 23:21:59,095 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:59,095 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] [2018-10-23 23:21:59,096 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:59,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:59,096 INFO L82 PathProgramCache]: Analyzing trace with hash -2099227971, now seen corresponding path program 1 times [2018-10-23 23:21:59,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:59,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:59,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:59,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:59,098 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:59,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:59,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:21:59,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:59,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:21:59,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:21:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:21:59,334 INFO L87 Difference]: Start difference. First operand 380 states and 632 transitions. Second operand 6 states. [2018-10-23 23:22:02,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:22:02,104 INFO L93 Difference]: Finished difference Result 1184 states and 2066 transitions. [2018-10-23 23:22:02,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:22:02,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-23 23:22:02,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:22:02,114 INFO L225 Difference]: With dead ends: 1184 [2018-10-23 23:22:02,114 INFO L226 Difference]: Without dead ends: 810 [2018-10-23 23:22:02,121 INFO L605 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 [2018-10-23 23:22:02,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2018-10-23 23:22:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 800. [2018-10-23 23:22:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-10-23 23:22:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1274 transitions. [2018-10-23 23:22:02,196 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1274 transitions. Word has length 155 [2018-10-23 23:22:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:22:02,197 INFO L481 AbstractCegarLoop]: Abstraction has 800 states and 1274 transitions. [2018-10-23 23:22:02,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:22:02,197 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1274 transitions. [2018-10-23 23:22:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-23 23:22:02,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:22:02,201 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] [2018-10-23 23:22:02,202 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:22:02,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:22:02,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1213735243, now seen corresponding path program 1 times [2018-10-23 23:22:02,202 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:22:02,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:22:02,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:22:02,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:22:02,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:22:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:22:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:22:02,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:22:02,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:22:02,385 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:22:02,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:22:02,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:22:02,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:22:02,386 INFO L87 Difference]: Start difference. First operand 800 states and 1274 transitions. Second operand 3 states. [2018-10-23 23:22:04,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:22:04,151 INFO L93 Difference]: Finished difference Result 2306 states and 3791 transitions. [2018-10-23 23:22:04,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:22:04,152 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-10-23 23:22:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:22:04,163 INFO L225 Difference]: With dead ends: 2306 [2018-10-23 23:22:04,163 INFO L226 Difference]: Without dead ends: 1512 [2018-10-23 23:22:04,168 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 [2018-10-23 23:22:04,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2018-10-23 23:22:04,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1507. [2018-10-23 23:22:04,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1507 states. [2018-10-23 23:22:04,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2312 transitions. [2018-10-23 23:22:04,245 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2312 transitions. Word has length 156 [2018-10-23 23:22:04,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:22:04,246 INFO L481 AbstractCegarLoop]: Abstraction has 1507 states and 2312 transitions. [2018-10-23 23:22:04,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:22:04,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2312 transitions. [2018-10-23 23:22:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-10-23 23:22:04,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:22:04,255 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] [2018-10-23 23:22:04,256 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:22:04,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:22:04,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1427113375, now seen corresponding path program 1 times [2018-10-23 23:22:04,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:22:04,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:22:04,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:22:04,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:22:04,258 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:22:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:22:05,001 WARN L179 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-10-23 23:22:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 44 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:22:05,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:22:05,055 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:22:05,056 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 174 with the following transitions: [2018-10-23 23:22:05,059 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] [2018-10-23 23:22:05,155 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:22:05,156 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:22:29,198 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:22:29,200 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. [2018-10-23 23:22:29,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:22:29,215 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:22:34,978 INFO L232 lantSequenceWeakener]: Weakened 62 states. On average, predicates are now at 82.39% of their original sizes. [2018-10-23 23:22:34,979 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:23:36,083 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:23:36,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:23:36,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-23 23:23:36,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:23:36,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-23 23:23:36,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-23 23:23:36,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-10-23 23:23:36,087 INFO L87 Difference]: Start difference. First operand 1507 states and 2312 transitions. Second operand 18 states. Received shutdown request... [2018-10-23 23:26:06,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-23 23:26:06,865 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:26:06,871 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:26:06,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:26:06 BoogieIcfgContainer [2018-10-23 23:26:06,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:26:06,874 INFO L168 Benchmark]: Toolchain (without parser) took 257961.00 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 874.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:26:06,875 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 23:26:06,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 753.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:26:06,879 INFO L168 Benchmark]: Boogie Procedure Inliner took 222.92 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 705.2 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -779.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:26:06,881 INFO L168 Benchmark]: Boogie Preprocessor took 86.82 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:26:06,882 INFO L168 Benchmark]: RCFGBuilder took 3749.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 121.8 MB). Peak memory consumption was 121.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:26:06,883 INFO L168 Benchmark]: TraceAbstraction took 253140.64 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -793.1 MB). Peak memory consumption was 791.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:26:06,891 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 753.70 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 222.92 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 705.2 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -779.1 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.82 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3749.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 121.8 MB). Peak memory consumption was 121.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 253140.64 ms. Allocated memory was 2.2 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 2.0 GB in the beginning and 2.8 GB in the end (delta: -793.1 MB). Peak memory consumption was 791.8 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 24 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1205 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 253.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 158.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 860 SDtfs, 2628 SDslu, 329 SDs, 0 SdLazy, 3266 SolverSat, 754 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 208 GetRequests, 142 SyntacticMatches, 28 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 71.6s 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, 24.1s 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, 1.9s 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