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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:05:48,014 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:05:48,017 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:05:48,032 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:05:48,032 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:05:48,034 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:05:48,037 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:05:48,039 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:05:48,043 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:05:48,044 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:05:48,045 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:05:48,045 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:05:48,047 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:05:48,048 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:05:48,052 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:05:48,053 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:05:48,054 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:05:48,056 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:05:48,067 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:05:48,068 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:05:48,071 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:05:48,074 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:05:48,077 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:05:48,077 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:05:48,077 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:05:48,078 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:05:48,082 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:05:48,083 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:05:48,084 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:05:48,087 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:05:48,087 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:05:48,089 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:05:48,089 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:05:48,089 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:05:48,090 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:05:48,091 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:05:48,092 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:05:48,123 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:05:48,123 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:05:48,124 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:05:48,124 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:05:48,124 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:05:48,125 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:05:48,125 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:05:48,125 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:05:48,125 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:05:48,125 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:05:48,126 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:05:48,126 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:05:48,126 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:05:48,126 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:05:48,127 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:05:48,127 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:05:48,127 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:05:48,127 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:05:48,128 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:05:48,128 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:05:48,128 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:05:48,128 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:05:48,128 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:05:48,129 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:05:48,129 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:05:48,129 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:05:48,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:05:48,129 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:05:48,130 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:05:48,130 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:05:48,130 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:05:48,130 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:05:48,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:05:48,130 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:05:48,131 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:05:48,131 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:05:48,174 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:05:48,188 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:05:48,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:05:48,193 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:05:48,194 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:05:48,195 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c [2018-11-07 09:05:48,257 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ac31bcb/1fbdbab2dab54d1b846596c6695b491a/FLAGca8bf880b [2018-11-07 09:05:48,937 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:05:48,940 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c [2018-11-07 09:05:48,961 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ac31bcb/1fbdbab2dab54d1b846596c6695b491a/FLAGca8bf880b [2018-11-07 09:05:48,982 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ac31bcb/1fbdbab2dab54d1b846596c6695b491a [2018-11-07 09:05:48,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:05:48,994 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:05:48,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:05:48,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:05:48,999 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:05:49,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:05:48" (1/1) ... [2018-11-07 09:05:49,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5faf74f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:49, skipping insertion in model container [2018-11-07 09:05:49,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:05:48" (1/1) ... [2018-11-07 09:05:49,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:05:49,123 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:05:49,938 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:05:49,942 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:05:50,217 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:05:50,238 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:05:50,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50 WrapperNode [2018-11-07 09:05:50,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:05:50,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:05:50,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:05:50,241 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:05:50,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (1/1) ... [2018-11-07 09:05:50,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (1/1) ... [2018-11-07 09:05:50,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:05:50,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:05:50,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:05:50,468 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:05:50,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (1/1) ... [2018-11-07 09:05:50,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (1/1) ... [2018-11-07 09:05:50,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (1/1) ... [2018-11-07 09:05:50,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (1/1) ... [2018-11-07 09:05:50,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (1/1) ... [2018-11-07 09:05:50,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (1/1) ... [2018-11-07 09:05:50,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (1/1) ... [2018-11-07 09:05:50,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:05:50,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:05:50,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:05:50,638 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:05:50,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (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 09:05:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:05:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:05:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:05:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:05:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:05:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:05:50,710 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:05:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:05:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:05:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:05:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:05:56,995 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:05:56,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:05:56 BoogieIcfgContainer [2018-11-07 09:05:56,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:05:56,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:05:56,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:05:57,001 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:05:57,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:05:48" (1/3) ... [2018-11-07 09:05:57,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301474fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:05:57, skipping insertion in model container [2018-11-07 09:05:57,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:50" (2/3) ... [2018-11-07 09:05:57,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301474fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:05:57, skipping insertion in model container [2018-11-07 09:05:57,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:05:56" (3/3) ... [2018-11-07 09:05:57,004 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label16_true-unreach-call.c [2018-11-07 09:05:57,013 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:05:57,021 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:05:57,035 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:05:57,074 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:05:57,074 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:05:57,074 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:05:57,074 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:05:57,075 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:05:57,075 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:05:57,075 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:05:57,075 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:05:57,107 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 09:05:57,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-07 09:05:57,118 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:57,119 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:05:57,123 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:57,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:57,131 INFO L82 PathProgramCache]: Analyzing trace with hash 539142097, now seen corresponding path program 1 times [2018-11-07 09:05:57,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:57,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:57,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:57,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:57,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:57,660 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:05:57,788 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 09:05:57,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:05:57,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:05:57,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:05:57,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:05:57,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:05:57,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:05:57,817 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 09:06:01,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:01,872 INFO L93 Difference]: Finished difference Result 1193 states and 2149 transitions. [2018-11-07 09:06:01,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:06:01,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-11-07 09:06:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:01,901 INFO L225 Difference]: With dead ends: 1193 [2018-11-07 09:06:01,901 INFO L226 Difference]: Without dead ends: 753 [2018-11-07 09:06:01,912 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 09:06:01,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2018-11-07 09:06:02,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2018-11-07 09:06:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2018-11-07 09:06:02,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1315 transitions. [2018-11-07 09:06:02,025 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1315 transitions. Word has length 69 [2018-11-07 09:06:02,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:02,026 INFO L480 AbstractCegarLoop]: Abstraction has 753 states and 1315 transitions. [2018-11-07 09:06:02,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:06:02,026 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1315 transitions. [2018-11-07 09:06:02,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 09:06:02,043 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:02,043 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, 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 09:06:02,044 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:02,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:02,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1189160704, now seen corresponding path program 1 times [2018-11-07 09:06:02,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:02,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:02,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:02,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:02,047 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:02,414 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:06:02,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:06:02,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:06:02,414 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:02,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:06:02,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:06:02,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:06:02,419 INFO L87 Difference]: Start difference. First operand 753 states and 1315 transitions. Second operand 5 states. [2018-11-07 09:06:10,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:10,175 INFO L93 Difference]: Finished difference Result 2820 states and 5075 transitions. [2018-11-07 09:06:10,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 09:06:10,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-11-07 09:06:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:10,193 INFO L225 Difference]: With dead ends: 2820 [2018-11-07 09:06:10,193 INFO L226 Difference]: Without dead ends: 2073 [2018-11-07 09:06:10,201 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 09:06:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2018-11-07 09:06:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2045. [2018-11-07 09:06:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2045 states. [2018-11-07 09:06:10,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 3207 transitions. [2018-11-07 09:06:10,306 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 3207 transitions. Word has length 149 [2018-11-07 09:06:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:10,307 INFO L480 AbstractCegarLoop]: Abstraction has 2045 states and 3207 transitions. [2018-11-07 09:06:10,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:06:10,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 3207 transitions. [2018-11-07 09:06:10,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 09:06:10,313 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:10,313 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, 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] [2018-11-07 09:06:10,314 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:10,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:10,314 INFO L82 PathProgramCache]: Analyzing trace with hash -719504888, now seen corresponding path program 1 times [2018-11-07 09:06:10,314 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:10,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:10,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:10,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:10,316 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:10,710 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:06:10,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:06:10,710 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:06:10,711 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:10,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:06:10,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:06:10,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:06:10,712 INFO L87 Difference]: Start difference. First operand 2045 states and 3207 transitions. Second operand 6 states. [2018-11-07 09:06:17,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:17,605 INFO L93 Difference]: Finished difference Result 6269 states and 10277 transitions. [2018-11-07 09:06:17,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 09:06:17,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-07 09:06:17,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:17,638 INFO L225 Difference]: With dead ends: 6269 [2018-11-07 09:06:17,638 INFO L226 Difference]: Without dead ends: 4230 [2018-11-07 09:06:17,658 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:06:17,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2018-11-07 09:06:17,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 4171. [2018-11-07 09:06:17,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4171 states. [2018-11-07 09:06:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4171 states to 4171 states and 6114 transitions. [2018-11-07 09:06:17,798 INFO L78 Accepts]: Start accepts. Automaton has 4171 states and 6114 transitions. Word has length 153 [2018-11-07 09:06:17,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:17,799 INFO L480 AbstractCegarLoop]: Abstraction has 4171 states and 6114 transitions. [2018-11-07 09:06:17,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:06:17,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4171 states and 6114 transitions. [2018-11-07 09:06:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-11-07 09:06:17,810 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:17,810 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:06:17,810 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:17,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:17,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1335578740, now seen corresponding path program 1 times [2018-11-07 09:06:17,811 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:17,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:17,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:17,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:17,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 127 proven. 61 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 09:06:18,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:18,464 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:06:18,465 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 220 with the following transitions: [2018-11-07 09:06:18,467 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:06:18,517 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:06:18,517 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:06:19,193 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:06:19,195 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:06:19,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:19,227 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:06:19,990 INFO L227 lantSequenceWeakener]: Weakened 210 states. On average, predicates are now at 78.41% of their original sizes. [2018-11-07 09:06:19,990 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:06:20,241 INFO L415 sIntCurrentIteration]: We unified 218 AI predicates to 218 [2018-11-07 09:06:20,241 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:06:20,242 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:06:20,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:06:20,243 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:20,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:06:20,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:06:20,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:06:20,244 INFO L87 Difference]: Start difference. First operand 4171 states and 6114 transitions. Second operand 6 states. [2018-11-07 09:07:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:15,378 INFO L93 Difference]: Finished difference Result 8646 states and 12576 transitions. [2018-11-07 09:07:15,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:07:15,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 219 [2018-11-07 09:07:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:15,399 INFO L225 Difference]: With dead ends: 8646 [2018-11-07 09:07:15,399 INFO L226 Difference]: Without dead ends: 4481 [2018-11-07 09:07:15,410 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 219 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:07:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2018-11-07 09:07:15,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 4479. [2018-11-07 09:07:15,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4479 states. [2018-11-07 09:07:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4479 states to 4479 states and 6430 transitions. [2018-11-07 09:07:15,524 INFO L78 Accepts]: Start accepts. Automaton has 4479 states and 6430 transitions. Word has length 219 [2018-11-07 09:07:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:15,524 INFO L480 AbstractCegarLoop]: Abstraction has 4479 states and 6430 transitions. [2018-11-07 09:07:15,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:07:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4479 states and 6430 transitions. [2018-11-07 09:07:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-11-07 09:07:15,532 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:15,532 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 09:07:15,533 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:15,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:15,533 INFO L82 PathProgramCache]: Analyzing trace with hash -378898114, now seen corresponding path program 1 times [2018-11-07 09:07:15,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:15,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:15,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:15,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:15,535 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 09:07:15,800 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:15,800 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:15,800 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-11-07 09:07:15,801 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:15,806 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:15,806 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:16,142 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:07:16,142 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 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 09:07:16,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:16,183 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:07:16,455 INFO L227 lantSequenceWeakener]: Weakened 246 states. On average, predicates are now at 84.4% of their original sizes. [2018-11-07 09:07:16,455 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:07:16,728 INFO L415 sIntCurrentIteration]: We unified 248 AI predicates to 248 [2018-11-07 09:07:16,728 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:07:16,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:07:16,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-07 09:07:16,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:16,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:07:16,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:07:16,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:07:16,730 INFO L87 Difference]: Start difference. First operand 4479 states and 6430 transitions. Second operand 9 states. [2018-11-07 09:07:53,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:53,010 INFO L93 Difference]: Finished difference Result 10169 states and 14864 transitions. [2018-11-07 09:07:53,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:07:53,010 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 249 [2018-11-07 09:07:53,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:53,032 INFO L225 Difference]: With dead ends: 10169 [2018-11-07 09:07:53,033 INFO L226 Difference]: Without dead ends: 6004 [2018-11-07 09:07:53,045 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:07:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2018-11-07 09:07:53,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 5713. [2018-11-07 09:07:53,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5713 states. [2018-11-07 09:07:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 7731 transitions. [2018-11-07 09:07:53,165 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 7731 transitions. Word has length 249 [2018-11-07 09:07:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:53,166 INFO L480 AbstractCegarLoop]: Abstraction has 5713 states and 7731 transitions. [2018-11-07 09:07:53,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:07:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 7731 transitions. [2018-11-07 09:07:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-11-07 09:07:53,180 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:53,180 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, 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, 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] [2018-11-07 09:07:53,181 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:53,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:53,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1688214028, now seen corresponding path program 1 times [2018-11-07 09:07:53,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:53,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:53,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:53,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:53,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:53,613 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:07:54,469 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 266 proven. 101 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-11-07 09:07:54,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:54,470 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:54,470 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 447 with the following transitions: [2018-11-07 09:07:54,471 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:54,478 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:54,478 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:55,258 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:07:55,259 INFO L272 AbstractInterpreter]: Visited 211 different actions 833 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:07:55,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:55,298 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:07:55,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:55,299 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:07:55,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:55,314 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:07:55,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:55,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:07:56,029 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:07:56,029 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:07:56,186 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 09:07:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 347 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:07:57,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:07:57,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-11-07 09:07:57,228 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:07:57,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 09:07:57,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 09:07:57,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:07:57,230 INFO L87 Difference]: Start difference. First operand 5713 states and 7731 transitions. Second operand 11 states. [2018-11-07 09:08:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:08,115 INFO L93 Difference]: Finished difference Result 16649 states and 24118 transitions. [2018-11-07 09:08:08,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 09:08:08,119 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 446 [2018-11-07 09:08:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:08,193 INFO L225 Difference]: With dead ends: 16649 [2018-11-07 09:08:08,194 INFO L226 Difference]: Without dead ends: 12484 [2018-11-07 09:08:08,236 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 901 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2018-11-07 09:08:08,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12484 states. [2018-11-07 09:08:08,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12484 to 12339. [2018-11-07 09:08:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12339 states. [2018-11-07 09:08:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12339 states to 12339 states and 14742 transitions. [2018-11-07 09:08:08,655 INFO L78 Accepts]: Start accepts. Automaton has 12339 states and 14742 transitions. Word has length 446 [2018-11-07 09:08:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:08,656 INFO L480 AbstractCegarLoop]: Abstraction has 12339 states and 14742 transitions. [2018-11-07 09:08:08,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 09:08:08,656 INFO L276 IsEmpty]: Start isEmpty. Operand 12339 states and 14742 transitions. [2018-11-07 09:08:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-11-07 09:08:08,683 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:08,684 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:08,684 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:08,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:08,685 INFO L82 PathProgramCache]: Analyzing trace with hash -1515771385, now seen corresponding path program 1 times [2018-11-07 09:08:08,685 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:08,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:08,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:08,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:08,686 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-11-07 09:08:09,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:08:09,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:08:09,544 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:08:09,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:08:09,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:08:09,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:08:09,546 INFO L87 Difference]: Start difference. First operand 12339 states and 14742 transitions. Second operand 5 states. [2018-11-07 09:08:13,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:13,954 INFO L93 Difference]: Finished difference Result 32983 states and 40709 transitions. [2018-11-07 09:08:13,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:08:13,955 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 494 [2018-11-07 09:08:13,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:14,022 INFO L225 Difference]: With dead ends: 32983 [2018-11-07 09:08:14,022 INFO L226 Difference]: Without dead ends: 22192 [2018-11-07 09:08:14,056 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:08:14,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22192 states. [2018-11-07 09:08:14,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22192 to 20775. [2018-11-07 09:08:14,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20775 states. [2018-11-07 09:08:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20775 states to 20775 states and 24025 transitions. [2018-11-07 09:08:14,491 INFO L78 Accepts]: Start accepts. Automaton has 20775 states and 24025 transitions. Word has length 494 [2018-11-07 09:08:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:14,493 INFO L480 AbstractCegarLoop]: Abstraction has 20775 states and 24025 transitions. [2018-11-07 09:08:14,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:08:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 20775 states and 24025 transitions. [2018-11-07 09:08:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2018-11-07 09:08:14,526 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:14,526 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:14,527 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:14,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:14,527 INFO L82 PathProgramCache]: Analyzing trace with hash -2098698628, now seen corresponding path program 1 times [2018-11-07 09:08:14,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:14,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:14,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:14,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:14,528 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 274 proven. 82 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-07 09:08:15,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:15,411 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:08:15,411 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 515 with the following transitions: [2018-11-07 09:08:15,412 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [633], [636], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:08:15,432 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:08:15,432 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:08:19,880 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:08:19,880 INFO L272 AbstractInterpreter]: Visited 287 different actions 1137 times. Merged at 8 different actions 26 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:08:19,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:19,906 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:08:19,906 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:19,906 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:08:19,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:19,920 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:08:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:20,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:08:20,243 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-11-07 09:08:20,244 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:08:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2018-11-07 09:08:20,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:08:20,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 3] total 7 [2018-11-07 09:08:20,466 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:08:20,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:08:20,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:08:20,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:08:20,467 INFO L87 Difference]: Start difference. First operand 20775 states and 24025 transitions. Second operand 3 states. [2018-11-07 09:08:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:23,622 INFO L93 Difference]: Finished difference Result 47796 states and 56140 transitions. [2018-11-07 09:08:23,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:08:23,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 514 [2018-11-07 09:08:23,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:23,734 INFO L225 Difference]: With dead ends: 47796 [2018-11-07 09:08:23,735 INFO L226 Difference]: Without dead ends: 27335 [2018-11-07 09:08:23,778 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:08:23,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27335 states. [2018-11-07 09:08:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27335 to 27249. [2018-11-07 09:08:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27249 states. [2018-11-07 09:08:24,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27249 states to 27249 states and 31828 transitions. [2018-11-07 09:08:24,258 INFO L78 Accepts]: Start accepts. Automaton has 27249 states and 31828 transitions. Word has length 514 [2018-11-07 09:08:24,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:24,260 INFO L480 AbstractCegarLoop]: Abstraction has 27249 states and 31828 transitions. [2018-11-07 09:08:24,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:08:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 27249 states and 31828 transitions. [2018-11-07 09:08:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2018-11-07 09:08:24,303 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:24,304 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:24,304 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:24,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:24,305 INFO L82 PathProgramCache]: Analyzing trace with hash -761170201, now seen corresponding path program 1 times [2018-11-07 09:08:24,305 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:24,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:24,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:24,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:24,306 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:25,058 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-11-07 09:08:25,413 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2018-11-07 09:08:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 248 proven. 102 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:08:25,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:25,876 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:08:25,876 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 521 with the following transitions: [2018-11-07 09:08:25,877 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [687], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:08:25,882 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:08:25,882 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:08:26,314 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:08:26,315 INFO L272 AbstractInterpreter]: Visited 285 different actions 854 times. Merged at 8 different actions 23 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:08:26,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:26,320 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:08:26,320 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:26,320 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:08:26,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:26,330 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:08:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:26,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:08:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 378 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-11-07 09:08:26,928 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:08:27,321 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 270 proven. 80 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:08:27,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:08:27,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 17 [2018-11-07 09:08:27,341 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:08:27,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 09:08:27,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 09:08:27,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2018-11-07 09:08:27,343 INFO L87 Difference]: Start difference. First operand 27249 states and 31828 transitions. Second operand 15 states. [2018-11-07 09:08:27,904 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-11-07 09:08:38,411 WARN L179 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 26 [2018-11-07 09:08:48,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:48,906 INFO L93 Difference]: Finished difference Result 64489 states and 80243 transitions. [2018-11-07 09:08:48,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-11-07 09:08:48,907 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 520 [2018-11-07 09:08:48,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:49,049 INFO L225 Difference]: With dead ends: 64489 [2018-11-07 09:08:49,049 INFO L226 Difference]: Without dead ends: 37554 [2018-11-07 09:08:49,153 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 1074 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1284, Invalid=5856, Unknown=0, NotChecked=0, Total=7140 [2018-11-07 09:08:49,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37554 states. [2018-11-07 09:08:49,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37554 to 36878. [2018-11-07 09:08:49,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36878 states. [2018-11-07 09:08:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36878 states to 36878 states and 42397 transitions. [2018-11-07 09:08:49,845 INFO L78 Accepts]: Start accepts. Automaton has 36878 states and 42397 transitions. Word has length 520 [2018-11-07 09:08:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:49,846 INFO L480 AbstractCegarLoop]: Abstraction has 36878 states and 42397 transitions. [2018-11-07 09:08:49,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 09:08:49,846 INFO L276 IsEmpty]: Start isEmpty. Operand 36878 states and 42397 transitions. [2018-11-07 09:08:49,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2018-11-07 09:08:49,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:49,911 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:08:49,911 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:49,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:49,912 INFO L82 PathProgramCache]: Analyzing trace with hash -279253556, now seen corresponding path program 1 times [2018-11-07 09:08:49,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:49,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:49,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:49,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:49,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 09:08:50,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:50,784 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:08:50,784 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 611 with the following transitions: [2018-11-07 09:08:50,784 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:08:50,789 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:08:50,789 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:08:56,195 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:08:56,195 INFO L272 AbstractInterpreter]: Visited 286 different actions 1138 times. Merged at 9 different actions 29 times. Never widened. Found 8 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:08:56,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:56,202 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:08:56,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:56,202 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:08:56,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:56,211 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:08:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:56,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:08:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 09:08:56,599 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:08:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2018-11-07 09:08:57,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:08:57,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-11-07 09:08:57,074 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:08:57,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:08:57,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:08:57,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:08:57,075 INFO L87 Difference]: Start difference. First operand 36878 states and 42397 transitions. Second operand 6 states. [2018-11-07 09:09:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:01,035 INFO L93 Difference]: Finished difference Result 79478 states and 94641 transitions. [2018-11-07 09:09:01,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 09:09:01,036 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 610 [2018-11-07 09:09:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:01,175 INFO L225 Difference]: With dead ends: 79478 [2018-11-07 09:09:01,175 INFO L226 Difference]: Without dead ends: 44077 [2018-11-07 09:09:01,254 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1233 GetRequests, 1222 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:09:01,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44077 states. [2018-11-07 09:09:01,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44077 to 43225. [2018-11-07 09:09:01,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43225 states. [2018-11-07 09:09:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43225 states to 43225 states and 48406 transitions. [2018-11-07 09:09:01,982 INFO L78 Accepts]: Start accepts. Automaton has 43225 states and 48406 transitions. Word has length 610 [2018-11-07 09:09:01,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:01,984 INFO L480 AbstractCegarLoop]: Abstraction has 43225 states and 48406 transitions. [2018-11-07 09:09:01,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:09:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 43225 states and 48406 transitions. [2018-11-07 09:09:02,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2018-11-07 09:09:02,016 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:02,017 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, 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, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:09:02,017 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:02,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:02,017 INFO L82 PathProgramCache]: Analyzing trace with hash -503860241, now seen corresponding path program 1 times [2018-11-07 09:09:02,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:02,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:02,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:02,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:02,019 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:03,551 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-07 09:09:03,809 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-07 09:09:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 352 proven. 371 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-07 09:09:04,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:04,723 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:04,723 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 629 with the following transitions: [2018-11-07 09:09:04,724 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1455], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:04,727 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:04,728 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:05,556 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:05,556 INFO L272 AbstractInterpreter]: Visited 265 different actions 1575 times. Merged at 9 different actions 49 times. Widened at 1 different actions 2 times. Found 11 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:09:05,562 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:05,562 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:05,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:05,562 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:09:05,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:05,575 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:05,733 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 566 proven. 41 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-11-07 09:09:06,949 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:09:08,022 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 263 proven. 460 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-07 09:09:08,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:09:08,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2018-11-07 09:09:08,043 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:09:08,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 09:09:08,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 09:09:08,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:09:08,045 INFO L87 Difference]: Start difference. First operand 43225 states and 48406 transitions. Second operand 13 states. [2018-11-07 09:09:19,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:19,009 INFO L93 Difference]: Finished difference Result 97042 states and 108613 transitions. [2018-11-07 09:09:19,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 09:09:19,010 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 628 [2018-11-07 09:09:19,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:19,146 INFO L225 Difference]: With dead ends: 97042 [2018-11-07 09:09:19,146 INFO L226 Difference]: Without dead ends: 50310 [2018-11-07 09:09:19,241 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1314 GetRequests, 1273 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=426, Invalid=1296, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 09:09:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50310 states. [2018-11-07 09:09:19,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50310 to 48730. [2018-11-07 09:09:19,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48730 states. [2018-11-07 09:09:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48730 states to 48730 states and 54270 transitions. [2018-11-07 09:09:20,026 INFO L78 Accepts]: Start accepts. Automaton has 48730 states and 54270 transitions. Word has length 628 [2018-11-07 09:09:20,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:20,026 INFO L480 AbstractCegarLoop]: Abstraction has 48730 states and 54270 transitions. [2018-11-07 09:09:20,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 09:09:20,027 INFO L276 IsEmpty]: Start isEmpty. Operand 48730 states and 54270 transitions. [2018-11-07 09:09:20,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2018-11-07 09:09:20,065 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:20,066 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, 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, 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, 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, 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 09:09:20,066 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:20,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:20,066 INFO L82 PathProgramCache]: Analyzing trace with hash 727869282, now seen corresponding path program 1 times [2018-11-07 09:09:20,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:20,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:20,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:20,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:20,068 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 269 proven. 462 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-11-07 09:09:22,174 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:22,174 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:22,174 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 668 with the following transitions: [2018-11-07 09:09:22,175 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:22,181 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:22,181 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:26,104 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:26,105 INFO L272 AbstractInterpreter]: Visited 288 different actions 861 times. Merged at 9 different actions 23 times. Never widened. Found 6 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:09:26,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:26,121 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:26,121 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:26,121 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:09:26,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:26,130 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:26,305 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-11-07 09:09:26,800 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:09:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-11-07 09:09:27,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:09:27,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2018-11-07 09:09:27,280 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:09:27,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 09:09:27,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 09:09:27,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:09:27,282 INFO L87 Difference]: Start difference. First operand 48730 states and 54270 transitions. Second operand 12 states. Received shutdown request... [2018-11-07 09:09:32,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 09:09:32,181 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:09:32,186 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:09:32,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:09:32 BoogieIcfgContainer [2018-11-07 09:09:32,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:09:32,188 INFO L168 Benchmark]: Toolchain (without parser) took 223193.94 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -921.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 09:09:32,189 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:09:32,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1244.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:32,190 INFO L168 Benchmark]: Boogie Procedure Inliner took 227.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -899.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:32,191 INFO L168 Benchmark]: Boogie Preprocessor took 168.99 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:32,192 INFO L168 Benchmark]: RCFGBuilder took 6358.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 289.0 MB). Peak memory consumption was 289.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:32,192 INFO L168 Benchmark]: TraceAbstraction took 215189.80 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -430.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 09:09:32,197 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1244.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 227.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -899.4 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 168.99 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6358.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 289.0 MB). Peak memory consumption was 289.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215189.80 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -430.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was constructing difference of abstraction (48730states) and FLOYD_HOARE automaton (currently 18 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (3139 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 215.1s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 171.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2742 SDtfs, 28358 SDslu, 4046 SDs, 0 SdLazy, 47041 SolverSat, 9052 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 130.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 7551 GetRequests, 7308 SyntacticMatches, 17 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3125 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48730occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.1s AbstIntTime, 8 AbstIntIterations, 2 AbstIntStrong, 0.9970226746741849 AbsIntWeakeningRatio, 0.11158798283261803 AbsIntAvgWeakeningVarsNumRemoved, 15.53648068669528 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 5136 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 8103 NumberOfCodeBlocks, 8103 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 11464 ConstructedInterpolants, 0 QuantifiedInterpolants, 23410487 SizeOfPredicates, 10 NumberOfNonLiveVariables, 4826 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 10255/12110 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown