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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:55:46,793 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:55:46,795 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:55:46,807 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:55:46,808 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:55:46,809 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:55:46,810 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:55:46,812 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:55:46,814 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:55:46,815 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:55:46,816 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:55:46,816 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:55:46,817 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:55:46,818 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:55:46,819 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:55:46,820 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:55:46,821 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:55:46,822 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:55:46,824 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:55:46,826 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:55:46,827 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:55:46,828 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:55:46,831 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:55:46,831 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:55:46,832 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:55:46,833 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:55:46,834 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:55:46,835 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:55:46,836 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:55:46,839 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:55:46,839 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:55:46,840 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:55:46,840 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:55:46,841 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:55:46,845 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:55:46,846 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:55:46,846 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 20:55:46,875 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:55:46,879 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:55:46,880 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:55:46,880 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:55:46,880 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:55:46,881 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:55:46,881 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:55:46,881 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:55:46,882 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:55:46,882 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:55:46,882 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:55:46,882 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:55:46,882 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:55:46,883 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:55:46,883 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:55:46,883 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:55:46,885 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:55:46,885 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:55:46,885 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:55:46,885 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:55:46,885 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:55:46,886 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:55:46,886 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:55:46,886 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:55:46,886 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:55:46,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:55:46,887 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:55:46,887 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:55:46,887 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:55:46,888 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:55:46,888 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:55:46,888 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:55:46,888 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:55:46,888 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:55:46,888 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:55:46,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:55:46,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:55:46,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:55:46,972 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:55:46,972 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:55:46,973 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c [2018-11-07 20:55:47,044 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e32c5b42/ecac0f09da53496d9fdd6730451595e7/FLAGbe708a433 [2018-11-07 20:55:47,722 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:55:47,723 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label45_true-unreach-call.c [2018-11-07 20:55:47,746 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e32c5b42/ecac0f09da53496d9fdd6730451595e7/FLAGbe708a433 [2018-11-07 20:55:47,764 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e32c5b42/ecac0f09da53496d9fdd6730451595e7 [2018-11-07 20:55:47,775 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:55:47,778 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:55:47,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:55:47,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:55:47,784 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:55:47,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:55:47" (1/1) ... [2018-11-07 20:55:47,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f12b8cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:47, skipping insertion in model container [2018-11-07 20:55:47,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:55:47" (1/1) ... [2018-11-07 20:55:47,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:55:47,898 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:55:48,714 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:55:48,719 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:55:48,989 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:55:49,009 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:55:49,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49 WrapperNode [2018-11-07 20:55:49,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:55:49,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:55:49,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:55:49,011 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:55:49,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (1/1) ... [2018-11-07 20:55:49,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (1/1) ... [2018-11-07 20:55:49,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:55:49,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:55:49,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:55:49,204 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:55:49,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (1/1) ... [2018-11-07 20:55:49,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (1/1) ... [2018-11-07 20:55:49,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (1/1) ... [2018-11-07 20:55:49,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (1/1) ... [2018-11-07 20:55:49,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (1/1) ... [2018-11-07 20:55:49,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (1/1) ... [2018-11-07 20:55:49,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (1/1) ... [2018-11-07 20:55:49,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:55:49,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:55:49,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:55:49,358 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:55:49,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (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 20:55:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:55:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:55:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:55:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:55:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:55:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:55:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:55:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:55:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:55:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:55:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:55:54,928 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:55:54,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:54 BoogieIcfgContainer [2018-11-07 20:55:54,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:55:54,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:55:54,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:55:54,935 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:55:54,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:55:47" (1/3) ... [2018-11-07 20:55:54,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620dc7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:54, skipping insertion in model container [2018-11-07 20:55:54,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:49" (2/3) ... [2018-11-07 20:55:54,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620dc7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:54, skipping insertion in model container [2018-11-07 20:55:54,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:54" (3/3) ... [2018-11-07 20:55:54,939 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label45_true-unreach-call.c [2018-11-07 20:55:54,947 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:55:54,956 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:55:54,971 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:55:55,013 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:55:55,013 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:55:55,013 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:55:55,013 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:55:55,014 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:55:55,014 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:55:55,014 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:55:55,014 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:55:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:55:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-07 20:55:55,056 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:55:55,058 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] [2018-11-07 20:55:55,060 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:55:55,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:55,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1570242596, now seen corresponding path program 1 times [2018-11-07 20:55:55,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:55:55,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:55,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:55:55,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:55,122 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:55:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:55:55,629 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 20:55:55,710 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 20:55:55,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:55:55,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:55:55,716 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:55:55,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:55:55,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:55:55,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:55:55,768 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-11-07 20:56:01,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:01,954 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-11-07 20:56:01,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 20:56:01,956 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-07 20:56:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:01,983 INFO L225 Difference]: With dead ends: 1513 [2018-11-07 20:56:01,983 INFO L226 Difference]: Without dead ends: 1097 [2018-11-07 20:56:01,994 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 20:56:02,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-11-07 20:56:02,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-11-07 20:56:02,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:56:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1301 transitions. [2018-11-07 20:56:02,108 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1301 transitions. Word has length 60 [2018-11-07 20:56:02,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:02,109 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1301 transitions. [2018-11-07 20:56:02,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 20:56:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1301 transitions. [2018-11-07 20:56:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 20:56:02,118 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:02,119 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, 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] [2018-11-07 20:56:02,119 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:02,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:02,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1372196061, now seen corresponding path program 1 times [2018-11-07 20:56:02,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:02,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:02,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:02,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:02,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:02,463 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:02,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:02,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:56:02,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:02,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:56:02,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:56:02,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:56:02,467 INFO L87 Difference]: Start difference. First operand 744 states and 1301 transitions. Second operand 6 states. [2018-11-07 20:56:06,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:06,753 INFO L93 Difference]: Finished difference Result 2196 states and 3924 transitions. [2018-11-07 20:56:06,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:56:06,754 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 20:56:06,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:06,767 INFO L225 Difference]: With dead ends: 2196 [2018-11-07 20:56:06,768 INFO L226 Difference]: Without dead ends: 1458 [2018-11-07 20:56:06,771 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:56:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-11-07 20:56:06,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-11-07 20:56:06,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-11-07 20:56:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2463 transitions. [2018-11-07 20:56:06,848 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2463 transitions. Word has length 131 [2018-11-07 20:56:06,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:06,848 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 2463 transitions. [2018-11-07 20:56:06,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:56:06,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2463 transitions. [2018-11-07 20:56:06,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 20:56:06,852 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:06,853 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, 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] [2018-11-07 20:56:06,853 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:06,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:06,853 INFO L82 PathProgramCache]: Analyzing trace with hash 822565126, now seen corresponding path program 1 times [2018-11-07 20:56:06,853 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:06,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:06,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:06,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:06,855 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:07,199 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:56:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:07,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:07,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 20:56:07,434 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:07,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 20:56:07,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 20:56:07,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 20:56:07,436 INFO L87 Difference]: Start difference. First operand 1438 states and 2463 transitions. Second operand 5 states. [2018-11-07 20:56:11,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:11,608 INFO L93 Difference]: Finished difference Result 3597 states and 6200 transitions. [2018-11-07 20:56:11,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:56:11,609 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2018-11-07 20:56:11,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:11,625 INFO L225 Difference]: With dead ends: 3597 [2018-11-07 20:56:11,625 INFO L226 Difference]: Without dead ends: 2165 [2018-11-07 20:56:11,631 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:56:11,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2018-11-07 20:56:11,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2145. [2018-11-07 20:56:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2018-11-07 20:56:11,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3126 transitions. [2018-11-07 20:56:11,713 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3126 transitions. Word has length 132 [2018-11-07 20:56:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:11,714 INFO L480 AbstractCegarLoop]: Abstraction has 2145 states and 3126 transitions. [2018-11-07 20:56:11,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 20:56:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3126 transitions. [2018-11-07 20:56:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 20:56:11,720 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:11,721 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, 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] [2018-11-07 20:56:11,721 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:11,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:11,722 INFO L82 PathProgramCache]: Analyzing trace with hash 9848590, now seen corresponding path program 1 times [2018-11-07 20:56:11,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:11,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:11,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:11,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:11,725 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:12,076 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:56:12,456 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:12,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:12,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:56:12,457 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:12,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:56:12,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:56:12,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:56:12,459 INFO L87 Difference]: Start difference. First operand 2145 states and 3126 transitions. Second operand 6 states. [2018-11-07 20:56:16,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:16,559 INFO L93 Difference]: Finished difference Result 7058 states and 10436 transitions. [2018-11-07 20:56:16,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:56:16,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-11-07 20:56:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:16,591 INFO L225 Difference]: With dead ends: 7058 [2018-11-07 20:56:16,591 INFO L226 Difference]: Without dead ends: 4919 [2018-11-07 20:56:16,610 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:56:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2018-11-07 20:56:16,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4879. [2018-11-07 20:56:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2018-11-07 20:56:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6857 transitions. [2018-11-07 20:56:16,790 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6857 transitions. Word has length 224 [2018-11-07 20:56:16,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:16,792 INFO L480 AbstractCegarLoop]: Abstraction has 4879 states and 6857 transitions. [2018-11-07 20:56:16,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:56:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6857 transitions. [2018-11-07 20:56:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-07 20:56:16,802 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:16,803 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:56:16,803 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:16,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:16,804 INFO L82 PathProgramCache]: Analyzing trace with hash 433783590, now seen corresponding path program 1 times [2018-11-07 20:56:16,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:16,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:16,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:16,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:16,806 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:16,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:17,156 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:56:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:56:17,682 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:56:17,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:56:17,683 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:17,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:56:17,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:56:17,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:56:17,684 INFO L87 Difference]: Start difference. First operand 4879 states and 6857 transitions. Second operand 6 states. [2018-11-07 20:56:21,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:21,352 INFO L93 Difference]: Finished difference Result 12216 states and 17406 transitions. [2018-11-07 20:56:21,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:56:21,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 244 [2018-11-07 20:56:21,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:21,390 INFO L225 Difference]: With dead ends: 12216 [2018-11-07 20:56:21,391 INFO L226 Difference]: Without dead ends: 7343 [2018-11-07 20:56:21,422 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:56:21,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2018-11-07 20:56:21,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7306. [2018-11-07 20:56:21,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7306 states. [2018-11-07 20:56:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 9825 transitions. [2018-11-07 20:56:21,609 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 9825 transitions. Word has length 244 [2018-11-07 20:56:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:21,609 INFO L480 AbstractCegarLoop]: Abstraction has 7306 states and 9825 transitions. [2018-11-07 20:56:21,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:56:21,610 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 9825 transitions. [2018-11-07 20:56:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2018-11-07 20:56:21,628 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:21,628 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:56:21,629 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:21,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:21,629 INFO L82 PathProgramCache]: Analyzing trace with hash -860566542, now seen corresponding path program 1 times [2018-11-07 20:56:21,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:21,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:21,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:21,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:21,631 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 184 proven. 37 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2018-11-07 20:56:22,251 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:56:22,252 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:56:22,253 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 425 with the following transitions: [2018-11-07 20:56:22,255 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1048], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:56:22,312 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:56:22,313 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:56:23,242 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:56:23,244 INFO L272 AbstractInterpreter]: Visited 170 different actions 170 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:56:23,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:23,299 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:56:24,780 INFO L227 lantSequenceWeakener]: Weakened 396 states. On average, predicates are now at 77.81% of their original sizes. [2018-11-07 20:56:24,780 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:56:29,016 INFO L415 sIntCurrentIteration]: We unified 423 AI predicates to 423 [2018-11-07 20:56:29,016 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:56:29,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:56:29,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 17 [2018-11-07 20:56:29,018 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:29,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:56:29,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:56:29,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:56:29,019 INFO L87 Difference]: Start difference. First operand 7306 states and 9825 transitions. Second operand 11 states. [2018-11-07 20:56:34,166 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:56:53,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:56:53,089 INFO L93 Difference]: Finished difference Result 14949 states and 20050 transitions. [2018-11-07 20:56:53,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 20:56:53,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 424 [2018-11-07 20:56:53,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:56:53,125 INFO L225 Difference]: With dead ends: 14949 [2018-11-07 20:56:53,125 INFO L226 Difference]: Without dead ends: 7649 [2018-11-07 20:56:53,155 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 428 GetRequests, 331 SyntacticMatches, 83 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-07 20:56:53,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2018-11-07 20:56:53,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 7644. [2018-11-07 20:56:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7644 states. [2018-11-07 20:56:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7644 states to 7644 states and 10172 transitions. [2018-11-07 20:56:53,325 INFO L78 Accepts]: Start accepts. Automaton has 7644 states and 10172 transitions. Word has length 424 [2018-11-07 20:56:53,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:56:53,326 INFO L480 AbstractCegarLoop]: Abstraction has 7644 states and 10172 transitions. [2018-11-07 20:56:53,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 20:56:53,326 INFO L276 IsEmpty]: Start isEmpty. Operand 7644 states and 10172 transitions. [2018-11-07 20:56:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2018-11-07 20:56:53,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:56:53,350 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-07 20:56:53,351 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:56:53,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:53,351 INFO L82 PathProgramCache]: Analyzing trace with hash -738044364, now seen corresponding path program 1 times [2018-11-07 20:56:53,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:56:53,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:53,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:56:53,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:56:53,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:56:53,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:56:53,757 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 20:56:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 289 proven. 265 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-11-07 20:56:54,842 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:56:54,842 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:56:54,843 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 517 with the following transitions: [2018-11-07 20:56:54,843 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1048], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:56:54,850 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:56:54,850 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:56:54,956 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:56:55,523 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:56:55,523 INFO L272 AbstractInterpreter]: Visited 174 different actions 509 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:56:55,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:56:55,562 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:56:56,413 INFO L227 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-07 20:56:56,413 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:56:57,317 INFO L415 sIntCurrentIteration]: We unified 515 AI predicates to 515 [2018-11-07 20:56:57,317 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:56:57,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:56:57,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [7] total 22 [2018-11-07 20:56:57,318 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:56:57,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 20:56:57,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 20:56:57,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:56:57,320 INFO L87 Difference]: Start difference. First operand 7644 states and 10172 transitions. Second operand 17 states. [2018-11-07 20:57:35,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:57:35,081 INFO L93 Difference]: Finished difference Result 16667 states and 21974 transitions. [2018-11-07 20:57:35,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 20:57:35,081 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 516 [2018-11-07 20:57:35,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:57:35,107 INFO L225 Difference]: With dead ends: 16667 [2018-11-07 20:57:35,107 INFO L226 Difference]: Without dead ends: 9367 [2018-11-07 20:57:35,126 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 522 GetRequests, 476 SyntacticMatches, 24 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2018-11-07 20:57:35,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9367 states. [2018-11-07 20:57:35,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9367 to 8630. [2018-11-07 20:57:35,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8630 states. [2018-11-07 20:57:35,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8630 states to 8630 states and 11239 transitions. [2018-11-07 20:57:35,315 INFO L78 Accepts]: Start accepts. Automaton has 8630 states and 11239 transitions. Word has length 516 [2018-11-07 20:57:35,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:57:35,316 INFO L480 AbstractCegarLoop]: Abstraction has 8630 states and 11239 transitions. [2018-11-07 20:57:35,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 20:57:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8630 states and 11239 transitions. [2018-11-07 20:57:35,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2018-11-07 20:57:35,345 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:57:35,346 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:57:35,346 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:57:35,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:35,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1060521172, now seen corresponding path program 1 times [2018-11-07 20:57:35,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:57:35,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:35,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:57:35,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:57:35,348 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:57:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:57:35,721 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 20:57:36,184 WARN L179 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 20:57:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 808 backedges. 348 proven. 196 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2018-11-07 20:57:37,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:57:37,599 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:57:37,599 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 553 with the following transitions: [2018-11-07 20:57:37,600 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1048], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:57:37,605 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:57:37,605 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:57:37,722 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:57:38,197 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:57:38,197 INFO L272 AbstractInterpreter]: Visited 174 different actions 509 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:57:38,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:57:38,223 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:57:38,899 INFO L227 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 77.49% of their original sizes. [2018-11-07 20:57:38,899 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:57:39,321 INFO L415 sIntCurrentIteration]: We unified 551 AI predicates to 551 [2018-11-07 20:57:39,322 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:57:39,322 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:57:39,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2018-11-07 20:57:39,323 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:57:39,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:57:39,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:57:39,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:57:39,325 INFO L87 Difference]: Start difference. First operand 8630 states and 11239 transitions. Second operand 19 states. [2018-11-07 20:58:41,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:58:41,049 INFO L93 Difference]: Finished difference Result 17991 states and 23485 transitions. [2018-11-07 20:58:41,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 20:58:41,049 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 552 [2018-11-07 20:58:41,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:58:41,076 INFO L225 Difference]: With dead ends: 17991 [2018-11-07 20:58:41,077 INFO L226 Difference]: Without dead ends: 10333 [2018-11-07 20:58:41,092 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 568 GetRequests, 534 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=295, Invalid=965, Unknown=0, NotChecked=0, Total=1260 [2018-11-07 20:58:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10333 states. [2018-11-07 20:58:41,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10333 to 9344. [2018-11-07 20:58:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9344 states. [2018-11-07 20:58:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9344 states to 9344 states and 12044 transitions. [2018-11-07 20:58:42,003 INFO L78 Accepts]: Start accepts. Automaton has 9344 states and 12044 transitions. Word has length 552 [2018-11-07 20:58:42,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:58:42,005 INFO L480 AbstractCegarLoop]: Abstraction has 9344 states and 12044 transitions. [2018-11-07 20:58:42,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:58:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand 9344 states and 12044 transitions. [2018-11-07 20:58:42,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2018-11-07 20:58:42,044 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:58:42,045 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:58:42,045 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:58:42,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:42,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1241429324, now seen corresponding path program 1 times [2018-11-07 20:58:42,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:58:42,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:42,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:58:42,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:58:42,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:58:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:58:43,384 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 645 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-11-07 20:58:43,384 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:58:43,384 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:58:43,384 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 665 with the following transitions: [2018-11-07 20:58:43,385 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1048], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:58:43,391 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:58:43,391 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:58:43,792 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:58:43,792 INFO L272 AbstractInterpreter]: Visited 250 different actions 494 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:58:43,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:58:43,800 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:58:44,457 INFO L227 lantSequenceWeakener]: Weakened 164 states. On average, predicates are now at 78.74% of their original sizes. [2018-11-07 20:58:44,458 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:58:46,737 INFO L415 sIntCurrentIteration]: We unified 663 AI predicates to 663 [2018-11-07 20:58:46,738 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:58:46,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:58:46,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [7] total 26 [2018-11-07 20:58:46,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:58:46,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:58:46,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:58:46,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:58:46,741 INFO L87 Difference]: Start difference. First operand 9344 states and 12044 transitions. Second operand 21 states. [2018-11-07 20:58:49,157 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:59:05,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:59:05,681 INFO L93 Difference]: Finished difference Result 18008 states and 23504 transitions. [2018-11-07 20:59:05,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 20:59:05,681 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 664 [2018-11-07 20:59:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:59:05,709 INFO L225 Difference]: With dead ends: 18008 [2018-11-07 20:59:05,710 INFO L226 Difference]: Without dead ends: 9980 [2018-11-07 20:59:05,726 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 677 GetRequests, 556 SyntacticMatches, 88 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 20:59:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9980 states. [2018-11-07 20:59:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9980 to 9975. [2018-11-07 20:59:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9975 states. [2018-11-07 20:59:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9975 states to 9975 states and 12717 transitions. [2018-11-07 20:59:05,918 INFO L78 Accepts]: Start accepts. Automaton has 9975 states and 12717 transitions. Word has length 664 [2018-11-07 20:59:05,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:59:05,919 INFO L480 AbstractCegarLoop]: Abstraction has 9975 states and 12717 transitions. [2018-11-07 20:59:05,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 20:59:05,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9975 states and 12717 transitions. [2018-11-07 20:59:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-11-07 20:59:05,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:59:05,947 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:59:05,947 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:59:05,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:05,948 INFO L82 PathProgramCache]: Analyzing trace with hash 386706364, now seen corresponding path program 1 times [2018-11-07 20:59:05,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:59:05,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:05,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:59:05,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:59:05,949 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:59:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:59:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 846 backedges. 645 proven. 29 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2018-11-07 20:59:07,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:59:07,028 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:59:07,028 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 673 with the following transitions: [2018-11-07 20:59:07,029 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [559], [561], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1048], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:59:07,033 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:59:07,033 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:59:09,652 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:59:09,652 INFO L272 AbstractInterpreter]: Visited 258 different actions 2526 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:59:09,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:59:09,659 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:59:10,420 INFO L227 lantSequenceWeakener]: Weakened 161 states. On average, predicates are now at 78.74% of their original sizes. [2018-11-07 20:59:10,420 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:59:10,962 INFO L415 sIntCurrentIteration]: We unified 671 AI predicates to 671 [2018-11-07 20:59:10,962 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:59:10,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:59:10,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [7] total 30 [2018-11-07 20:59:10,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:59:10,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 20:59:10,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 20:59:10,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2018-11-07 20:59:10,965 INFO L87 Difference]: Start difference. First operand 9975 states and 12717 transitions. Second operand 25 states. [2018-11-07 20:59:14,460 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 20:59:27,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 20:59:27,087 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:59:27,092 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:59:27,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:59:27 BoogieIcfgContainer [2018-11-07 20:59:27,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:59:27,093 INFO L168 Benchmark]: Toolchain (without parser) took 219317.35 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 257.9 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-11-07 20:59:27,094 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:59:27,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1231.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:59:27,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 192.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -885.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:59:27,097 INFO L168 Benchmark]: Boogie Preprocessor took 153.88 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:59:27,097 INFO L168 Benchmark]: RCFGBuilder took 5570.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 263.7 MB). Peak memory consumption was 263.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:59:27,098 INFO L168 Benchmark]: TraceAbstraction took 212162.35 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 1.2 GB in the end (delta: 795.0 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. [2018-11-07 20:59:27,103 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1231.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 192.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -885.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.88 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5570.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 263.7 MB). Peak memory consumption was 263.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212162.35 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.0 GB in the beginning and 1.2 GB in the end (delta: 795.0 MB). Peak memory consumption was 3.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 166]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 166). Cancelled while BasicCegarLoop was constructing difference of abstraction (9975states) and FLOYD_HOARE automaton (currently 17 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (1519 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 212.0s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 181.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2202 SDtfs, 24173 SDslu, 1555 SDs, 0 SdLazy, 33412 SolverSat, 4358 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.8s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2918 GetRequests, 2557 SyntacticMatches, 199 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9975occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.4s AbstIntTime, 5 AbstIntIterations, 5 AbstIntStrong, 0.9979280564804754 AbsIntWeakeningRatio, 0.06517888770811193 AbsIntAvgWeakeningVarsNumRemoved, 10.558625575628763 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 2206 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 3619 NumberOfCodeBlocks, 3619 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3609 ConstructedInterpolants, 0 QuantifiedInterpolants, 7464073 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 3321/3877 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown