java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:13:32,756 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:13:32,758 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:13:32,773 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:13:32,774 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:13:32,775 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:13:32,777 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:13:32,778 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:13:32,780 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:13:32,781 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:13:32,782 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:13:32,782 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:13:32,783 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:13:32,784 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:13:32,785 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:13:32,786 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:13:32,787 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:13:32,789 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:13:32,791 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:13:32,792 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:13:32,794 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:13:32,795 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:13:32,797 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:13:32,807 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:13:32,826 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:13:32,827 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:13:32,828 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:13:32,828 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:13:32,828 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:13:32,828 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:13:32,828 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:13:32,829 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:13:32,829 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:13:32,829 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:13:32,830 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:13:32,830 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:13:32,831 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:13:32,831 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:13:32,831 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:13:32,831 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:13:32,831 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:13:32,832 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:13:32,833 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:13:32,833 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:13:32,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:13:32,833 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:13:32,834 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:13:32,834 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:13:32,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:13:32,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:13:32,835 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:13:32,835 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:13:32,835 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:13:32,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:13:32,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:13:32,836 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:13:32,836 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:13:32,836 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:13:32,881 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:13:32,897 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:13:32,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:13:32,905 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:13:32,905 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:13:32,906 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c [2018-11-07 00:13:32,976 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07835b45/2693fadd8daf4a66af5c2d130d92375b/FLAG1d2e0c724 [2018-11-07 00:13:33,891 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:13:33,892 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label44_false-unreach-call.c [2018-11-07 00:13:33,931 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07835b45/2693fadd8daf4a66af5c2d130d92375b/FLAG1d2e0c724 [2018-11-07 00:13:33,947 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b07835b45/2693fadd8daf4a66af5c2d130d92375b [2018-11-07 00:13:33,959 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:13:33,961 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:13:33,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:13:33,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:13:33,967 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:13:33,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:13:33" (1/1) ... [2018-11-07 00:13:33,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:33, skipping insertion in model container [2018-11-07 00:13:33,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:13:33" (1/1) ... [2018-11-07 00:13:33,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:13:34,167 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:13:35,754 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:13:35,758 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:13:36,483 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:13:36,525 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:13:36,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36 WrapperNode [2018-11-07 00:13:36,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:13:36,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:13:36,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:13:36,527 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:13:36,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (1/1) ... [2018-11-07 00:13:36,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (1/1) ... [2018-11-07 00:13:36,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:13:36,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:13:36,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:13:36,935 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:13:36,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (1/1) ... [2018-11-07 00:13:36,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (1/1) ... [2018-11-07 00:13:36,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (1/1) ... [2018-11-07 00:13:36,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (1/1) ... [2018-11-07 00:13:37,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (1/1) ... [2018-11-07 00:13:37,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (1/1) ... [2018-11-07 00:13:37,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (1/1) ... [2018-11-07 00:13:37,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:13:37,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:13:37,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:13:37,221 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:13:37,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:13:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:13:37,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:13:37,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:13:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 00:13:37,290 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 00:13:37,290 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:13:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:13:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:13:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:13:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:13:37,291 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:13:37,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:13:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:13:37,292 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:13:37,292 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:13:47,775 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:13:47,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:13:47 BoogieIcfgContainer [2018-11-07 00:13:47,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:13:47,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:13:47,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:13:47,781 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:13:47,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:13:33" (1/3) ... [2018-11-07 00:13:47,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4751d34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:13:47, skipping insertion in model container [2018-11-07 00:13:47,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:13:36" (2/3) ... [2018-11-07 00:13:47,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4751d34a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:13:47, skipping insertion in model container [2018-11-07 00:13:47,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:13:47" (3/3) ... [2018-11-07 00:13:47,786 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label44_false-unreach-call.c [2018-11-07 00:13:47,798 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:13:47,809 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:13:47,829 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:13:47,907 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:13:47,908 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:13:47,908 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:13:47,908 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:13:47,908 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:13:47,908 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:13:47,908 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:13:47,909 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:13:47,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 00:13:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-07 00:13:47,988 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:13:47,990 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:13:47,993 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:13:48,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:13:48,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1095367477, now seen corresponding path program 1 times [2018-11-07 00:13:48,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:13:48,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:48,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:13:48,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:48,070 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:13:48,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:13:48,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:13:48,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:13:48,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:13:48,603 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:13:48,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:13:48,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:13:48,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:13:48,638 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 00:13:57,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:13:57,260 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 00:13:57,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:13:57,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-11-07 00:13:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:13:57,294 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 00:13:57,295 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 00:13:57,307 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:13:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 00:13:57,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 00:13:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 00:13:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 00:13:57,467 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 37 [2018-11-07 00:13:57,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:13:57,468 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 00:13:57,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:13:57,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 00:13:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 00:13:57,474 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:13:57,475 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:13:57,475 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:13:57,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:13:57,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1403714778, now seen corresponding path program 1 times [2018-11-07 00:13:57,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:13:57,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:57,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:13:57,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:13:57,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:13:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:13:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:13:57,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:13:57,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:13:57,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:13:57,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:13:57,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:13:57,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:13:57,757 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 00:14:11,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:14:11,895 INFO L93 Difference]: Finished difference Result 5734 states and 9688 transitions. [2018-11-07 00:14:11,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:14:11,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2018-11-07 00:14:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:14:11,932 INFO L225 Difference]: With dead ends: 5734 [2018-11-07 00:14:11,932 INFO L226 Difference]: Without dead ends: 3766 [2018-11-07 00:14:11,940 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:14:11,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2018-11-07 00:14:12,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3681. [2018-11-07 00:14:12,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3681 states. [2018-11-07 00:14:12,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5655 transitions. [2018-11-07 00:14:12,063 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5655 transitions. Word has length 113 [2018-11-07 00:14:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:14:12,063 INFO L480 AbstractCegarLoop]: Abstraction has 3681 states and 5655 transitions. [2018-11-07 00:14:12,063 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:14:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5655 transitions. [2018-11-07 00:14:12,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 00:14:12,068 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:14:12,068 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:14:12,068 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:14:12,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:14:12,069 INFO L82 PathProgramCache]: Analyzing trace with hash -2119578826, now seen corresponding path program 1 times [2018-11-07 00:14:12,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:14:12,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:14:12,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:14:12,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:14:12,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:14:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:14:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:14:12,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:14:12,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:14:12,364 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:14:12,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:14:12,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:14:12,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:14:12,366 INFO L87 Difference]: Start difference. First operand 3681 states and 5655 transitions. Second operand 5 states. [2018-11-07 00:14:30,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:14:30,808 INFO L93 Difference]: Finished difference Result 13644 states and 21721 transitions. [2018-11-07 00:14:30,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:14:30,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2018-11-07 00:14:30,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:14:30,872 INFO L225 Difference]: With dead ends: 13644 [2018-11-07 00:14:30,872 INFO L226 Difference]: Without dead ends: 9969 [2018-11-07 00:14:30,900 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:14:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9969 states. [2018-11-07 00:14:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9969 to 9779. [2018-11-07 00:14:31,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9779 states. [2018-11-07 00:14:31,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 14474 transitions. [2018-11-07 00:14:31,171 INFO L78 Accepts]: Start accepts. Automaton has 9779 states and 14474 transitions. Word has length 127 [2018-11-07 00:14:31,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:14:31,172 INFO L480 AbstractCegarLoop]: Abstraction has 9779 states and 14474 transitions. [2018-11-07 00:14:31,172 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:14:31,172 INFO L276 IsEmpty]: Start isEmpty. Operand 9779 states and 14474 transitions. [2018-11-07 00:14:31,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 00:14:31,176 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:14:31,176 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:14:31,176 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:14:31,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:14:31,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1301512730, now seen corresponding path program 1 times [2018-11-07 00:14:31,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:14:31,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:14:31,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:14:31,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:14:31,179 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:14:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:14:31,480 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:14:31,725 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:14:31,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:14:31,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:14:31,726 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:14:31,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:14:31,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:14:31,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:14:31,728 INFO L87 Difference]: Start difference. First operand 9779 states and 14474 transitions. Second operand 6 states. [2018-11-07 00:14:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:14:43,620 INFO L93 Difference]: Finished difference Result 34095 states and 53555 transitions. [2018-11-07 00:14:43,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:14:43,620 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 00:14:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:14:43,757 INFO L225 Difference]: With dead ends: 34095 [2018-11-07 00:14:43,757 INFO L226 Difference]: Without dead ends: 24322 [2018-11-07 00:14:43,834 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:14:43,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24322 states. [2018-11-07 00:14:44,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24322 to 24101. [2018-11-07 00:14:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24101 states. [2018-11-07 00:14:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24101 states to 24101 states and 33912 transitions. [2018-11-07 00:14:44,478 INFO L78 Accepts]: Start accepts. Automaton has 24101 states and 33912 transitions. Word has length 145 [2018-11-07 00:14:44,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:14:44,479 INFO L480 AbstractCegarLoop]: Abstraction has 24101 states and 33912 transitions. [2018-11-07 00:14:44,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:14:44,479 INFO L276 IsEmpty]: Start isEmpty. Operand 24101 states and 33912 transitions. [2018-11-07 00:14:44,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 00:14:44,487 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:14:44,487 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:14:44,488 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:14:44,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:14:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash 351230122, now seen corresponding path program 1 times [2018-11-07 00:14:44,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:14:44,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:14:44,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:14:44,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:14:44,489 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:14:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:14:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:14:44,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:14:44,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:14:44,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:14:44,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:14:44,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:14:44,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:14:44,761 INFO L87 Difference]: Start difference. First operand 24101 states and 33912 transitions. Second operand 4 states. [2018-11-07 00:14:54,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:14:54,944 INFO L93 Difference]: Finished difference Result 66530 states and 99584 transitions. [2018-11-07 00:14:54,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:14:54,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-11-07 00:14:54,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:14:55,117 INFO L225 Difference]: With dead ends: 66530 [2018-11-07 00:14:55,117 INFO L226 Difference]: Without dead ends: 42435 [2018-11-07 00:14:55,194 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:14:55,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42435 states. [2018-11-07 00:14:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42435 to 42380. [2018-11-07 00:14:56,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42380 states. [2018-11-07 00:14:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42380 states to 42380 states and 59673 transitions. [2018-11-07 00:14:56,195 INFO L78 Accepts]: Start accepts. Automaton has 42380 states and 59673 transitions. Word has length 153 [2018-11-07 00:14:56,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:14:56,195 INFO L480 AbstractCegarLoop]: Abstraction has 42380 states and 59673 transitions. [2018-11-07 00:14:56,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:14:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 42380 states and 59673 transitions. [2018-11-07 00:14:56,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-11-07 00:14:56,228 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:14:56,229 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 00:14:56,229 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:14:56,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:14:56,229 INFO L82 PathProgramCache]: Analyzing trace with hash -215837280, now seen corresponding path program 1 times [2018-11-07 00:14:56,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:14:56,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:14:56,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:14:56,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:14:56,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:14:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:14:56,882 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-11-07 00:14:57,242 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 00:14:57,531 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 00:14:57,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:14:57,531 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:14:57,532 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-11-07 00:14:57,536 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2823], [2825], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3159], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 00:14:57,608 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:14:57,608 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:15:01,603 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:15:07,458 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:15:07,460 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 00:15:07,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:15:07,471 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:15:13,455 INFO L227 lantSequenceWeakener]: Weakened 258 states. On average, predicates are now at 71.33% of their original sizes. [2018-11-07 00:15:13,457 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:15:15,299 INFO L415 sIntCurrentIteration]: We unified 284 AI predicates to 284 [2018-11-07 00:15:15,300 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:15:15,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:15:15,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 00:15:15,301 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:15:15,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 00:15:15,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 00:15:15,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 00:15:15,302 INFO L87 Difference]: Start difference. First operand 42380 states and 59673 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 00:17:14,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:17:14,362 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:17:14,368 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:17:14,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:17:14 BoogieIcfgContainer [2018-11-07 00:17:14,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:17:14,370 INFO L168 Benchmark]: Toolchain (without parser) took 220409.84 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -351.4 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-11-07 00:17:14,371 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:17:14,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2563.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:17:14,378 INFO L168 Benchmark]: Boogie Procedure Inliner took 406.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.2 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 00:17:14,379 INFO L168 Benchmark]: Boogie Preprocessor took 286.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:17:14,381 INFO L168 Benchmark]: RCFGBuilder took 10555.55 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -2.0 MB). Peak memory consumption was 675.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:17:14,381 INFO L168 Benchmark]: TraceAbstraction took 206591.46 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 452.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 00:17:14,389 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2563.97 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 406.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.2 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 286.17 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10555.55 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -2.0 MB). Peak memory consumption was 675.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206591.46 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 452.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (42380states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (2574 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 206.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 183.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2691 SDtfs, 16228 SDslu, 2500 SDs, 0 SdLazy, 29189 SolverSat, 7568 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 146.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 325 GetRequests, 289 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42380occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9960346695557961 AbsIntWeakeningRatio, 0.11619718309859155 AbsIntAvgWeakeningVarsNumRemoved, 41.693661971830984 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 552 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 860 NumberOfCodeBlocks, 860 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 854 ConstructedInterpolants, 0 QuantifiedInterpolants, 612304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 296/440 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown