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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:30:45,155 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:30:45,157 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:30:45,169 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:30:45,170 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:30:45,171 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:30:45,172 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:30:45,175 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:30:45,178 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:30:45,179 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:30:45,181 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:30:45,181 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:30:45,182 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:30:45,183 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:30:45,191 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:30:45,192 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:30:45,193 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:30:45,199 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:30:45,204 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:30:45,210 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:30:45,212 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:30:45,214 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:30:45,221 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:30:45,221 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:30:45,221 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:30:45,223 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:30:45,224 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:30:45,225 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:30:45,226 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:30:45,228 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:30:45,229 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:30:45,231 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:30:45,231 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:30:45,231 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:30:45,232 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:30:45,234 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:30:45,235 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:30:45,267 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:30:45,267 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:30:45,269 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:30:45,269 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:30:45,269 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:30:45,269 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:30:45,269 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:30:45,270 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:30:45,270 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:30:45,270 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:30:45,270 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:30:45,271 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:30:45,272 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:30:45,272 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:30:45,273 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:30:45,273 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:30:45,273 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:30:45,274 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:30:45,274 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:30:45,274 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:30:45,274 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:30:45,275 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:30:45,275 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:30:45,275 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:30:45,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:30:45,276 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:30:45,277 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:30:45,277 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:30:45,277 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:30:45,277 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:30:45,278 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:30:45,278 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:30:45,278 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:30:45,278 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:30:45,348 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:30:45,365 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:30:45,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:30:45,374 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:30:45,375 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:30:45,376 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-09-18 11:30:45,737 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74bcd36f2/be0cdd8d6c2a4061a635c1ecf4a978e1/FLAGe485626b0 [2018-09-18 11:30:46,242 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:30:46,243 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-09-18 11:30:46,278 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74bcd36f2/be0cdd8d6c2a4061a635c1ecf4a978e1/FLAGe485626b0 [2018-09-18 11:30:46,301 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74bcd36f2/be0cdd8d6c2a4061a635c1ecf4a978e1 [2018-09-18 11:30:46,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:30:46,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:30:46,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:30:46,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:30:46,333 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:30:46,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:30:46" (1/1) ... [2018-09-18 11:30:46,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f90d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:46, skipping insertion in model container [2018-09-18 11:30:46,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:30:46" (1/1) ... [2018-09-18 11:30:46,356 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:30:47,699 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:30:47,717 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:30:48,377 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:30:48,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48 WrapperNode [2018-09-18 11:30:48,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:30:48,678 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:30:48,678 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:30:48,678 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:30:48,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (1/1) ... [2018-09-18 11:30:48,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (1/1) ... [2018-09-18 11:30:48,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:30:48,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:30:48,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:30:48,922 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:30:49,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (1/1) ... [2018-09-18 11:30:49,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (1/1) ... [2018-09-18 11:30:49,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (1/1) ... [2018-09-18 11:30:49,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (1/1) ... [2018-09-18 11:30:49,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (1/1) ... [2018-09-18 11:30:49,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (1/1) ... [2018-09-18 11:30:49,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (1/1) ... [2018-09-18 11:30:49,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:30:49,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:30:49,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:30:49,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:30:49,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (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 [2018-09-18 11:30:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:30:49,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:30:49,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:30:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:30:49,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:30:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:30:49,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:30:49,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:30:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:30:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:30:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:30:49,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:30:49,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:30:49,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:31:00,724 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:31:00,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:31:00 BoogieIcfgContainer [2018-09-18 11:31:00,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:31:00,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:31:00,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:31:00,729 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:31:00,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:30:46" (1/3) ... [2018-09-18 11:31:00,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eebea86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:31:00, skipping insertion in model container [2018-09-18 11:31:00,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:48" (2/3) ... [2018-09-18 11:31:00,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eebea86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:31:00, skipping insertion in model container [2018-09-18 11:31:00,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:31:00" (3/3) ... [2018-09-18 11:31:00,733 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label22_true-unreach-call.c [2018-09-18 11:31:00,743 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:31:00,753 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:31:00,828 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:31:00,829 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:31:00,829 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:31:00,829 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:31:00,829 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:31:00,829 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:31:00,830 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:31:00,830 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:31:00,830 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:31:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:31:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-09-18 11:31:00,893 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:00,894 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:00,896 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:00,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2101117445, now seen corresponding path program 1 times [2018-09-18 11:31:00,903 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:00,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:00,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:00,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:00,954 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:01,452 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:31:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:01,553 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:01,553 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:31:01,553 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:01,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:31:01,578 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:31:01,579 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:31:01,582 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:31:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:11,279 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:31:11,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:31:11,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-09-18 11:31:11,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:11,322 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:31:11,322 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:31:11,334 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:31:11,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:31:11,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:31:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:31:11,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-18 11:31:11,513 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 71 [2018-09-18 11:31:11,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:11,515 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-18 11:31:11,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:31:11,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-18 11:31:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-18 11:31:11,529 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:11,530 INFO L376 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:11,530 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash -843018732, now seen corresponding path program 1 times [2018-09-18 11:31:11,531 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:11,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:11,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:11,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:11,534 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:11,848 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:31:11,891 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:11,892 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:11,892 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:31:11,892 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:11,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:31:11,895 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:31:11,895 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:31:11,896 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-09-18 11:31:23,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:23,910 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-09-18 11:31:23,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:31:23,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-09-18 11:31:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:23,935 INFO L225 Difference]: With dead ends: 4818 [2018-09-18 11:31:23,936 INFO L226 Difference]: Without dead ends: 3220 [2018-09-18 11:31:23,943 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:31:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-09-18 11:31:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-09-18 11:31:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-09-18 11:31:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-09-18 11:31:24,057 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 145 [2018-09-18 11:31:24,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:24,058 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-09-18 11:31:24,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:31:24,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-09-18 11:31:24,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-09-18 11:31:24,063 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:24,063 INFO L376 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, 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] [2018-09-18 11:31:24,063 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:24,064 INFO L82 PathProgramCache]: Analyzing trace with hash -963200243, now seen corresponding path program 1 times [2018-09-18 11:31:24,064 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:24,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:24,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:24,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:24,065 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:24,342 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:24,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:31:24,343 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:24,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:31:24,344 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:31:24,344 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:31:24,344 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-09-18 11:31:36,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:36,322 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-09-18 11:31:36,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:31:36,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-09-18 11:31:36,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:36,371 INFO L225 Difference]: With dead ends: 11148 [2018-09-18 11:31:36,372 INFO L226 Difference]: Without dead ends: 7968 [2018-09-18 11:31:36,390 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:31:36,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-09-18 11:31:36,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-09-18 11:31:36,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-09-18 11:31:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-09-18 11:31:36,642 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 150 [2018-09-18 11:31:36,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:36,643 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-09-18 11:31:36,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:31:36,643 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-09-18 11:31:36,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-09-18 11:31:36,647 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:36,648 INFO L376 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, 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] [2018-09-18 11:31:36,648 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:36,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1301757085, now seen corresponding path program 1 times [2018-09-18 11:31:36,649 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:36,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:36,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:36,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:36,650 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:36,965 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:31:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:37,220 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:37,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:31:37,220 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:37,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:31:37,221 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:31:37,221 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:31:37,221 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-09-18 11:31:49,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:49,296 INFO L93 Difference]: Finished difference Result 23008 states and 39623 transitions. [2018-09-18 11:31:49,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:31:49,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-09-18 11:31:49,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:49,364 INFO L225 Difference]: With dead ends: 23008 [2018-09-18 11:31:49,365 INFO L226 Difference]: Without dead ends: 15090 [2018-09-18 11:31:49,406 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:31:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15090 states. [2018-09-18 11:31:49,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15090 to 15003. [2018-09-18 11:31:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15003 states. [2018-09-18 11:31:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15003 states to 15003 states and 23146 transitions. [2018-09-18 11:31:49,784 INFO L78 Accepts]: Start accepts. Automaton has 15003 states and 23146 transitions. Word has length 158 [2018-09-18 11:31:49,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:49,785 INFO L480 AbstractCegarLoop]: Abstraction has 15003 states and 23146 transitions. [2018-09-18 11:31:49,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:31:49,785 INFO L276 IsEmpty]: Start isEmpty. Operand 15003 states and 23146 transitions. [2018-09-18 11:31:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-09-18 11:31:49,794 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:49,795 INFO L376 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, 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] [2018-09-18 11:31:49,795 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:49,795 INFO L82 PathProgramCache]: Analyzing trace with hash -825092784, now seen corresponding path program 1 times [2018-09-18 11:31:49,796 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:49,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:49,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:49,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:49,797 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:50,078 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:31:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:50,484 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:50,484 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:31:50,484 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:50,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:31:50,485 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:31:50,485 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:31:50,486 INFO L87 Difference]: Start difference. First operand 15003 states and 23146 transitions. Second operand 6 states. [2018-09-18 11:32:00,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:00,820 INFO L93 Difference]: Finished difference Result 37570 states and 59679 transitions. [2018-09-18 11:32:00,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:32:00,820 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2018-09-18 11:32:00,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:00,922 INFO L225 Difference]: With dead ends: 37570 [2018-09-18 11:32:00,922 INFO L226 Difference]: Without dead ends: 22573 [2018-09-18 11:32:00,980 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:32:01,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22573 states. [2018-09-18 11:32:01,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22573 to 22453. [2018-09-18 11:32:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22453 states. [2018-09-18 11:32:01,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22453 states to 22453 states and 31714 transitions. [2018-09-18 11:32:01,495 INFO L78 Accepts]: Start accepts. Automaton has 22453 states and 31714 transitions. Word has length 191 [2018-09-18 11:32:01,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:01,496 INFO L480 AbstractCegarLoop]: Abstraction has 22453 states and 31714 transitions. [2018-09-18 11:32:01,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:32:01,496 INFO L276 IsEmpty]: Start isEmpty. Operand 22453 states and 31714 transitions. [2018-09-18 11:32:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-09-18 11:32:01,515 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:01,516 INFO L376 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, 3, 3, 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] [2018-09-18 11:32:01,516 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:01,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1239328397, now seen corresponding path program 1 times [2018-09-18 11:32:01,517 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:01,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:01,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:01,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:01,518 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-09-18 11:32:02,047 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:32:02,048 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:32:02,048 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:02,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:32:02,049 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:32:02,049 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:32:02,050 INFO L87 Difference]: Start difference. First operand 22453 states and 31714 transitions. Second operand 5 states. [2018-09-18 11:32:22,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:22,298 INFO L93 Difference]: Finished difference Result 73860 states and 107991 transitions. [2018-09-18 11:32:22,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:32:22,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2018-09-18 11:32:22,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:22,496 INFO L225 Difference]: With dead ends: 73860 [2018-09-18 11:32:22,496 INFO L226 Difference]: Without dead ends: 51413 [2018-09-18 11:32:22,581 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:32:22,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51413 states. [2018-09-18 11:32:23,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51413 to 50630. [2018-09-18 11:32:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50630 states. [2018-09-18 11:32:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50630 states to 50630 states and 67105 transitions. [2018-09-18 11:32:23,561 INFO L78 Accepts]: Start accepts. Automaton has 50630 states and 67105 transitions. Word has length 267 [2018-09-18 11:32:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:23,562 INFO L480 AbstractCegarLoop]: Abstraction has 50630 states and 67105 transitions. [2018-09-18 11:32:23,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:32:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 50630 states and 67105 transitions. [2018-09-18 11:32:23,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-09-18 11:32:23,595 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:23,595 INFO L376 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, 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] [2018-09-18 11:32:23,596 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:23,596 INFO L82 PathProgramCache]: Analyzing trace with hash 866225877, now seen corresponding path program 1 times [2018-09-18 11:32:23,596 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:23,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:23,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:23,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:23,598 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:24,032 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:24,032 INFO L197 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 [2018-09-18 11:32:24,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:24,041 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:24,162 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:24,841 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-18 11:32:24,841 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:25,063 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:32:25,169 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:32:25,743 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:25,778 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:32:25,778 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2018-09-18 11:32:25,778 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:25,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:32:25,779 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:32:25,780 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:32:25,780 INFO L87 Difference]: Start difference. First operand 50630 states and 67105 transitions. Second operand 5 states. [2018-09-18 11:32:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:38,486 INFO L93 Difference]: Finished difference Result 147070 states and 202909 transitions. [2018-09-18 11:32:38,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:32:38,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2018-09-18 11:32:38,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:38,892 INFO L225 Difference]: With dead ends: 147070 [2018-09-18 11:32:38,892 INFO L226 Difference]: Without dead ends: 96446 [2018-09-18 11:32:39,040 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:32:39,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96446 states. [2018-09-18 11:32:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96446 to 91683. [2018-09-18 11:32:41,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91683 states. [2018-09-18 11:32:41,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91683 states to 91683 states and 119922 transitions. [2018-09-18 11:32:41,732 INFO L78 Accepts]: Start accepts. Automaton has 91683 states and 119922 transitions. Word has length 271 [2018-09-18 11:32:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:41,732 INFO L480 AbstractCegarLoop]: Abstraction has 91683 states and 119922 transitions. [2018-09-18 11:32:41,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:32:41,733 INFO L276 IsEmpty]: Start isEmpty. Operand 91683 states and 119922 transitions. [2018-09-18 11:32:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-09-18 11:32:41,782 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:41,782 INFO L376 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:41,782 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:41,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1273228242, now seen corresponding path program 1 times [2018-09-18 11:32:41,783 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:41,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:41,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:41,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:41,784 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:42,151 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:32:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:42,687 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:42,687 INFO L197 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 [2018-09-18 11:32:42,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:42,703 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:42,834 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-18 11:32:43,275 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:43,949 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 115 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:43,972 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:32:43,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 11:32:43,972 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:43,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:32:43,974 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:32:43,974 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:32:43,975 INFO L87 Difference]: Start difference. First operand 91683 states and 119922 transitions. Second operand 5 states. [2018-09-18 11:32:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:55,044 INFO L93 Difference]: Finished difference Result 200611 states and 270032 transitions. [2018-09-18 11:32:55,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:32:55,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 390 [2018-09-18 11:32:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:55,433 INFO L225 Difference]: With dead ends: 200611 [2018-09-18 11:32:55,433 INFO L226 Difference]: Without dead ends: 108934 [2018-09-18 11:32:55,611 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 789 GetRequests, 774 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:32:55,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108934 states. [2018-09-18 11:32:57,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108934 to 106532. [2018-09-18 11:32:57,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106532 states. [2018-09-18 11:32:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106532 states to 106532 states and 132012 transitions. [2018-09-18 11:32:58,232 INFO L78 Accepts]: Start accepts. Automaton has 106532 states and 132012 transitions. Word has length 390 [2018-09-18 11:32:58,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:58,232 INFO L480 AbstractCegarLoop]: Abstraction has 106532 states and 132012 transitions. [2018-09-18 11:32:58,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:32:58,233 INFO L276 IsEmpty]: Start isEmpty. Operand 106532 states and 132012 transitions. [2018-09-18 11:32:58,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2018-09-18 11:32:58,338 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:58,339 INFO L376 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 11:32:58,339 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:58,339 INFO L82 PathProgramCache]: Analyzing trace with hash 370174583, now seen corresponding path program 1 times [2018-09-18 11:32:58,340 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:58,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:58,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:58,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:58,341 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 309 proven. 113 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-09-18 11:32:59,064 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:59,064 INFO L197 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 [2018-09-18 11:32:59,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:59,074 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:59,195 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 473 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-18 11:32:59,382 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 309 proven. 113 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-09-18 11:32:59,607 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:59,607 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:32:59,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:59,623 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:59,899 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:00,613 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 473 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2018-09-18 11:33:00,613 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 309 proven. 113 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-09-18 11:33:02,009 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:33:02,010 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 11:33:02,010 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:33:02,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:33:02,011 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:33:02,011 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:33:02,013 INFO L87 Difference]: Start difference. First operand 106532 states and 132012 transitions. Second operand 9 states. [2018-09-18 11:33:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:16,608 INFO L93 Difference]: Finished difference Result 240068 states and 315032 transitions. [2018-09-18 11:33:16,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:33:16,608 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 454 [2018-09-18 11:33:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:33:17,124 INFO L225 Difference]: With dead ends: 240068 [2018-09-18 11:33:17,125 INFO L226 Difference]: Without dead ends: 133542 [2018-09-18 11:33:17,324 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1832 GetRequests, 1811 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-09-18 11:33:17,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133542 states. [2018-09-18 11:33:19,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133542 to 130830. [2018-09-18 11:33:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130830 states. [2018-09-18 11:33:19,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130830 states to 130830 states and 167405 transitions. [2018-09-18 11:33:19,475 INFO L78 Accepts]: Start accepts. Automaton has 130830 states and 167405 transitions. Word has length 454 [2018-09-18 11:33:19,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:33:19,476 INFO L480 AbstractCegarLoop]: Abstraction has 130830 states and 167405 transitions. [2018-09-18 11:33:19,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:33:19,476 INFO L276 IsEmpty]: Start isEmpty. Operand 130830 states and 167405 transitions. [2018-09-18 11:33:19,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2018-09-18 11:33:19,529 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:33:19,530 INFO L376 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:33:19,530 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:33:19,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1598799646, now seen corresponding path program 1 times [2018-09-18 11:33:19,531 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:33:19,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:19,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:19,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:19,532 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:33:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-09-18 11:33:19,856 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:33:19,856 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:33:19,856 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:33:19,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:33:19,857 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:33:19,857 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:33:19,857 INFO L87 Difference]: Start difference. First operand 130830 states and 167405 transitions. Second operand 3 states. [2018-09-18 11:33:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:27,486 INFO L93 Difference]: Finished difference Result 279307 states and 365245 transitions. [2018-09-18 11:33:27,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:33:27,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 459 [2018-09-18 11:33:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:33:28,061 INFO L225 Difference]: With dead ends: 279307 [2018-09-18 11:33:28,061 INFO L226 Difference]: Without dead ends: 148488 [2018-09-18 11:33:28,359 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:33:28,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148488 states. [2018-09-18 11:33:31,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148488 to 143775. [2018-09-18 11:33:31,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143775 states. [2018-09-18 11:33:31,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143775 states to 143775 states and 181338 transitions. [2018-09-18 11:33:31,464 INFO L78 Accepts]: Start accepts. Automaton has 143775 states and 181338 transitions. Word has length 459 [2018-09-18 11:33:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:33:31,465 INFO L480 AbstractCegarLoop]: Abstraction has 143775 states and 181338 transitions. [2018-09-18 11:33:31,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:33:31,465 INFO L276 IsEmpty]: Start isEmpty. Operand 143775 states and 181338 transitions. [2018-09-18 11:33:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-09-18 11:33:31,519 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:33:31,519 INFO L376 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:33:31,520 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:33:31,520 INFO L82 PathProgramCache]: Analyzing trace with hash -653778841, now seen corresponding path program 1 times [2018-09-18 11:33:31,520 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:33:31,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:31,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:31,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:31,521 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:33:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:33:33,587 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:33,587 INFO L197 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 [2018-09-18 11:33:33,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:33,600 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:33,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:33,749 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:33:34,000 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:34,310 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:33:34,331 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:34,332 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:33:34,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:34,349 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:34,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:33:38,989 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:33:39,310 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:33:39,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:33:39,312 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:33:39,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:33:39,314 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:33:39,314 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:33:39,314 INFO L87 Difference]: Start difference. First operand 143775 states and 181338 transitions. Second operand 9 states. [2018-09-18 11:33:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:56,474 INFO L93 Difference]: Finished difference Result 287519 states and 364318 transitions. [2018-09-18 11:33:56,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-18 11:33:56,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 510 [2018-09-18 11:33:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:33:56,818 INFO L225 Difference]: With dead ends: 287519 [2018-09-18 11:33:56,818 INFO L226 Difference]: Without dead ends: 133024 [2018-09-18 11:33:57,041 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2058 GetRequests, 2035 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:33:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133024 states. [2018-09-18 11:33:59,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133024 to 128173. [2018-09-18 11:33:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128173 states. [2018-09-18 11:33:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128173 states to 128173 states and 154341 transitions. [2018-09-18 11:33:59,264 INFO L78 Accepts]: Start accepts. Automaton has 128173 states and 154341 transitions. Word has length 510 [2018-09-18 11:33:59,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:33:59,265 INFO L480 AbstractCegarLoop]: Abstraction has 128173 states and 154341 transitions. [2018-09-18 11:33:59,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:33:59,265 INFO L276 IsEmpty]: Start isEmpty. Operand 128173 states and 154341 transitions. [2018-09-18 11:33:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-09-18 11:33:59,319 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:33:59,319 INFO L376 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, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:33:59,320 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:33:59,320 INFO L82 PathProgramCache]: Analyzing trace with hash -798920265, now seen corresponding path program 1 times [2018-09-18 11:33:59,320 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:33:59,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:59,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:59,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:59,321 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:33:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2018-09-18 11:33:59,931 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:33:59,931 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:33:59,931 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:33:59,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:33:59,932 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:33:59,933 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:33:59,933 INFO L87 Difference]: Start difference. First operand 128173 states and 154341 transitions. Second operand 4 states. [2018-09-18 11:34:12,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:34:12,744 INFO L93 Difference]: Finished difference Result 364620 states and 457184 transitions. [2018-09-18 11:34:12,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:34:12,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 614 [2018-09-18 11:34:12,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:34:12,747 INFO L225 Difference]: With dead ends: 364620 [2018-09-18 11:34:12,747 INFO L226 Difference]: Without dead ends: 0 [2018-09-18 11:34:13,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:34:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-18 11:34:13,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-18 11:34:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-18 11:34:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-18 11:34:13,849 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 614 [2018-09-18 11:34:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:34:13,849 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-18 11:34:13,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:34:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-18 11:34:13,850 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-18 11:34:13,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-18 11:34:18,266 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2018-09-18 11:34:19,255 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:19,350 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:19,491 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:19,543 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,388 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,389 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,400 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,412 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,621 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,658 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,660 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,660 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,674 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,749 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,756 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,807 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,835 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,876 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,898 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,924 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:20,992 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,123 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,266 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,398 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,459 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,499 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,501 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,650 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,757 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,941 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:21,976 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:22,140 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:22,142 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:22,167 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:22,447 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:22,878 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:23,053 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:23,196 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:23,513 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:23,549 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:23,572 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:23,640 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:23,755 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:24,199 WARN L178 SmtUtils]: Spent 5.32 s on a formula simplification. DAG size of input: 1058 DAG size of output: 877 [2018-09-18 11:34:24,430 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:24,475 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:24,544 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:24,570 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,053 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,053 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,063 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,073 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,278 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,318 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,320 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,334 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,405 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,415 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,466 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,484 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,535 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,558 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,578 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,632 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,782 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:25,934 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:26,023 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-09-18 11:34:26,079 WARN L250 erpolLogProxyWrapper]: Already inconsistent. Received shutdown request... [2018-09-18 11:34:26,094 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-18 11:34:26,097 INFO L168 Benchmark]: Toolchain (without parser) took 219778.95 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -855.7 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-09-18 11:34:26,098 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-09-18 11:34:26,098 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2355.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:26,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 243.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:26,100 INFO L168 Benchmark]: Boogie Preprocessor took 945.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 917.0 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:26,101 INFO L168 Benchmark]: RCFGBuilder took 10856.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 649.3 MB). Peak memory consumption was 649.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:34:26,102 INFO L168 Benchmark]: TraceAbstraction took 205370.30 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -615.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-09-18 11:34:26,110 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2355.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 243.58 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 945.63 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 917.0 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10856.91 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 649.3 MB). Peak memory consumption was 649.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205370.30 ms. Allocated memory was 2.4 GB in the beginning and 4.8 GB in the end (delta: 2.4 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -615.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 204]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 1035. RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-34-26-131.csv Completed graceful shutdown