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/Problem18_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:14:37,788 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:14:37,790 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:14:37,802 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:14:37,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:14:37,803 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:14:37,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:14:37,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:14:37,808 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:14:37,809 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:14:37,810 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:14:37,810 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:14:37,811 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:14:37,812 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:14:37,813 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:14:37,814 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:14:37,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:14:37,817 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:14:37,819 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:14:37,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:14:37,821 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:14:37,823 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:14:37,828 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:14:37,828 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:14:37,828 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:14:37,831 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:14:37,832 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:14:37,833 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:14:37,836 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:14:37,837 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:14:37,837 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:14:37,838 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:14:37,838 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:14:37,838 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:14:37,841 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:14:37,842 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:14:37,842 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 [2018-09-14 18:14:37,873 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:14:37,875 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:14:37,877 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:14:37,877 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:14:37,877 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:14:37,877 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:14:37,877 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:14:37,877 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:14:37,878 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:14:37,878 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:14:37,878 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:14:37,879 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:14:37,879 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:14:37,879 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:14:37,879 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:14:37,879 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:14:37,880 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:14:37,880 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:14:37,880 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:14:37,880 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:14:37,880 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:14:37,881 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:14:37,881 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:14:37,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:14:37,881 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:14:37,881 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:14:37,882 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:14:37,882 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:14:37,882 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:14:37,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:14:37,882 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:14:37,882 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:14:37,883 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:14:37,948 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:14:37,962 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:14:37,969 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:14:37,970 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:14:37,971 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:14:37,972 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label42_true-unreach-call.c [2018-09-14 18:14:38,321 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4553b7fb/af4c9b70a0e44cd9980be9c4b7295121/FLAG9db8c7bdd [2018-09-14 18:14:38,797 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:14:38,798 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label42_true-unreach-call.c [2018-09-14 18:14:38,834 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4553b7fb/af4c9b70a0e44cd9980be9c4b7295121/FLAG9db8c7bdd [2018-09-14 18:14:38,855 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4553b7fb/af4c9b70a0e44cd9980be9c4b7295121 [2018-09-14 18:14:38,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:14:38,872 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:14:38,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:14:38,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:14:38,881 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:14:38,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:14:38" (1/1) ... [2018-09-14 18:14:38,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd7f308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:38, skipping insertion in model container [2018-09-14 18:14:38,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:14:38" (1/1) ... [2018-09-14 18:14:38,897 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:14:40,027 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:14:40,045 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:14:40,498 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:14:40,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40 WrapperNode [2018-09-14 18:14:40,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:14:40,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:14:40,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:14:40,663 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:14:40,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (1/1) ... [2018-09-14 18:14:40,763 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (1/1) ... [2018-09-14 18:14:40,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:14:40,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:14:40,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:14:40,872 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:14:41,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (1/1) ... [2018-09-14 18:14:41,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (1/1) ... [2018-09-14 18:14:41,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (1/1) ... [2018-09-14 18:14:41,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (1/1) ... [2018-09-14 18:14:41,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (1/1) ... [2018-09-14 18:14:41,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (1/1) ... [2018-09-14 18:14:41,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (1/1) ... [2018-09-14 18:14:41,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:14:41,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:14:41,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:14:41,481 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:14:41,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (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 [2018-09-14 18:14:41,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:14:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:14:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-14 18:14:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-14 18:14:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:14:41,554 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:14:41,554 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:14:41,555 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:14:41,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:14:41,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:14:41,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:14:41,555 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:14:49,675 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:14:49,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:14:49 BoogieIcfgContainer [2018-09-14 18:14:49,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:14:49,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:14:49,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:14:49,680 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:14:49,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:14:38" (1/3) ... [2018-09-14 18:14:49,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d5c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:14:49, skipping insertion in model container [2018-09-14 18:14:49,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:14:40" (2/3) ... [2018-09-14 18:14:49,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636d5c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:14:49, skipping insertion in model container [2018-09-14 18:14:49,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:14:49" (3/3) ... [2018-09-14 18:14:49,683 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label42_true-unreach-call.c [2018-09-14 18:14:49,691 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:14:49,701 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:14:49,759 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:14:49,760 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:14:49,760 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:14:49,760 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:14:49,761 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:14:49,761 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:14:49,761 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:14:49,761 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:14:49,761 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:14:49,797 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-09-14 18:14:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-14 18:14:49,806 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:49,807 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] [2018-09-14 18:14:49,809 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:49,814 INFO L82 PathProgramCache]: Analyzing trace with hash -385321844, now seen corresponding path program 1 times [2018-09-14 18:14:49,817 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:49,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:49,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:49,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:49,875 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:49,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:50,213 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:14:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:14:50,328 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:50,328 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 18:14:50,329 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:50,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:14:50,354 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:14:50,354 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:14:50,358 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-09-14 18:14:57,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:14:57,590 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-09-14 18:14:57,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:14:57,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-09-14 18:14:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:14:57,622 INFO L225 Difference]: With dead ends: 2251 [2018-09-14 18:14:57,622 INFO L226 Difference]: Without dead ends: 1474 [2018-09-14 18:14:57,631 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 [2018-09-14 18:14:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-09-14 18:14:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-09-14 18:14:57,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-09-14 18:14:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-09-14 18:14:57,795 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 56 [2018-09-14 18:14:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:14:57,796 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-09-14 18:14:57,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:14:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-09-14 18:14:57,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-09-14 18:14:57,808 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:14:57,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:14:57,809 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:14:57,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1814229039, now seen corresponding path program 1 times [2018-09-14 18:14:57,810 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:14:57,811 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:57,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:14:57,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:14:57,812 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:14:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:14:58,102 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:14:58,103 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:14:58,103 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:14:58,103 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:14:58,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:14:58,105 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:14:58,105 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:14:58,106 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-09-14 18:15:08,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:08,745 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-09-14 18:15:08,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:15:08,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-09-14 18:15:08,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:08,766 INFO L225 Difference]: With dead ends: 4422 [2018-09-14 18:15:08,766 INFO L226 Difference]: Without dead ends: 2954 [2018-09-14 18:15:08,771 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-09-14 18:15:08,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-09-14 18:15:08,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-09-14 18:15:08,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5043 transitions. [2018-09-14 18:15:08,866 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5043 transitions. Word has length 131 [2018-09-14 18:15:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:08,868 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5043 transitions. [2018-09-14 18:15:08,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:15:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5043 transitions. [2018-09-14 18:15:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-09-14 18:15:08,875 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:08,875 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:15:08,875 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:08,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1830585943, now seen corresponding path program 1 times [2018-09-14 18:15:08,876 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:08,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:08,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:08,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:08,877 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:09,169 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:15:09,169 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:15:09,169 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:09,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:15:09,170 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:15:09,170 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:15:09,171 INFO L87 Difference]: Start difference. First operand 2928 states and 5043 transitions. Second operand 6 states. [2018-09-14 18:15:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:14,909 INFO L93 Difference]: Finished difference Result 7337 states and 12456 transitions. [2018-09-14 18:15:14,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:15:14,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-09-14 18:15:14,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:14,934 INFO L225 Difference]: With dead ends: 7337 [2018-09-14 18:15:14,934 INFO L226 Difference]: Without dead ends: 4415 [2018-09-14 18:15:14,943 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 [2018-09-14 18:15:14,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2018-09-14 18:15:15,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4397. [2018-09-14 18:15:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4397 states. [2018-09-14 18:15:15,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 6494 transitions. [2018-09-14 18:15:15,058 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 6494 transitions. Word has length 143 [2018-09-14 18:15:15,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:15,059 INFO L480 AbstractCegarLoop]: Abstraction has 4397 states and 6494 transitions. [2018-09-14 18:15:15,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:15:15,059 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 6494 transitions. [2018-09-14 18:15:15,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2018-09-14 18:15:15,063 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:15,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:15:15,064 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:15,064 INFO L82 PathProgramCache]: Analyzing trace with hash 215050342, now seen corresponding path program 1 times [2018-09-14 18:15:15,064 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:15,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:15,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:15,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:15,066 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:15,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:15,343 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 [2018-09-14 18:15:15,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:15,352 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:15,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:15,642 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:15,642 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:15,889 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:15:15,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-09-14 18:15:15,889 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:15,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:15:15,890 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:15:15,891 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:15,891 INFO L87 Difference]: Start difference. First operand 4397 states and 6494 transitions. Second operand 3 states. [2018-09-14 18:15:20,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:20,736 INFO L93 Difference]: Finished difference Result 11636 states and 17268 transitions. [2018-09-14 18:15:20,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:15:20,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2018-09-14 18:15:20,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:20,767 INFO L225 Difference]: With dead ends: 11636 [2018-09-14 18:15:20,768 INFO L226 Difference]: Without dead ends: 7245 [2018-09-14 18:15:20,785 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2018-09-14 18:15:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 6542. [2018-09-14 18:15:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6542 states. [2018-09-14 18:15:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6542 states to 6542 states and 8967 transitions. [2018-09-14 18:15:21,042 INFO L78 Accepts]: Start accepts. Automaton has 6542 states and 8967 transitions. Word has length 168 [2018-09-14 18:15:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:21,043 INFO L480 AbstractCegarLoop]: Abstraction has 6542 states and 8967 transitions. [2018-09-14 18:15:21,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:15:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 6542 states and 8967 transitions. [2018-09-14 18:15:21,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-09-14 18:15:21,047 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:21,048 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, 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] [2018-09-14 18:15:21,048 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:21,048 INFO L82 PathProgramCache]: Analyzing trace with hash 780929093, now seen corresponding path program 1 times [2018-09-14 18:15:21,048 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:21,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:21,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:21,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:21,050 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:21,296 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:15:21,523 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 98 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:15:21,523 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:21,523 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 [2018-09-14 18:15:21,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:21,538 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:21,605 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:21,723 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-14 18:15:21,724 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:21,971 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 98 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:15:21,991 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:15:21,991 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2018-09-14 18:15:21,992 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:21,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:15:21,992 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:15:21,993 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:15:21,993 INFO L87 Difference]: Start difference. First operand 6542 states and 8967 transitions. Second operand 5 states. [2018-09-14 18:15:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:27,833 INFO L93 Difference]: Finished difference Result 13251 states and 18314 transitions. [2018-09-14 18:15:27,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:15:27,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2018-09-14 18:15:27,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:27,865 INFO L225 Difference]: With dead ends: 13251 [2018-09-14 18:15:27,866 INFO L226 Difference]: Without dead ends: 6715 [2018-09-14 18:15:27,883 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 400 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:15:27,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6715 states. [2018-09-14 18:15:28,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6715 to 5905. [2018-09-14 18:15:28,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5905 states. [2018-09-14 18:15:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 7806 transitions. [2018-09-14 18:15:28,015 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 7806 transitions. Word has length 203 [2018-09-14 18:15:28,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:28,015 INFO L480 AbstractCegarLoop]: Abstraction has 5905 states and 7806 transitions. [2018-09-14 18:15:28,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:15:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 7806 transitions. [2018-09-14 18:15:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-09-14 18:15:28,022 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:28,022 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:15:28,022 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:28,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1522308272, now seen corresponding path program 1 times [2018-09-14 18:15:28,023 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:28,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:28,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:28,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:28,024 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:28,489 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-09-14 18:15:28,836 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 18:15:29,086 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-09-14 18:15:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 98 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:15:29,259 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:29,259 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 [2018-09-14 18:15:29,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:29,372 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:29,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-14 18:15:29,621 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 98 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:15:30,740 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:15:30,740 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2018-09-14 18:15:30,740 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:15:30,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:15:30,741 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:15:30,741 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:15:30,741 INFO L87 Difference]: Start difference. First operand 5905 states and 7806 transitions. Second operand 5 states. [2018-09-14 18:15:38,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:15:38,974 INFO L93 Difference]: Finished difference Result 18456 states and 24774 transitions. [2018-09-14 18:15:38,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-14 18:15:38,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 252 [2018-09-14 18:15:38,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:15:39,031 INFO L225 Difference]: With dead ends: 18456 [2018-09-14 18:15:39,031 INFO L226 Difference]: Without dead ends: 12557 [2018-09-14 18:15:39,051 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 499 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2018-09-14 18:15:39,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12557 states. [2018-09-14 18:15:39,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12557 to 12352. [2018-09-14 18:15:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12352 states. [2018-09-14 18:15:39,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12352 states to 12352 states and 15166 transitions. [2018-09-14 18:15:39,315 INFO L78 Accepts]: Start accepts. Automaton has 12352 states and 15166 transitions. Word has length 252 [2018-09-14 18:15:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:15:39,316 INFO L480 AbstractCegarLoop]: Abstraction has 12352 states and 15166 transitions. [2018-09-14 18:15:39,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:15:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand 12352 states and 15166 transitions. [2018-09-14 18:15:39,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-09-14 18:15:39,323 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:15:39,324 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-14 18:15:39,324 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:15:39,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1189323996, now seen corresponding path program 1 times [2018-09-14 18:15:39,324 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:15:39,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:39,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:39,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:15:39,326 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:15:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:39,916 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:39,916 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:15:39,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:39,934 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:40,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:40,015 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:40,317 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:40,317 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:40,535 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:15:40,535 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 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:15:40,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:15:40,553 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:15:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:15:40,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:15:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:40,782 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:15:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:15:41,013 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:15:41,014 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-14 18:15:41,014 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:15:41,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-14 18:15:41,015 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-14 18:15:41,015 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-09-14 18:15:41,015 INFO L87 Difference]: Start difference. First operand 12352 states and 15166 transitions. Second operand 9 states. [2018-09-14 18:16:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:04,840 INFO L93 Difference]: Finished difference Result 55790 states and 76326 transitions. [2018-09-14 18:16:04,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-14 18:16:04,841 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 274 [2018-09-14 18:16:04,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:05,155 INFO L225 Difference]: With dead ends: 55790 [2018-09-14 18:16:05,155 INFO L226 Difference]: Without dead ends: 40057 [2018-09-14 18:16:05,360 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1164 GetRequests, 1112 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=575, Invalid=2181, Unknown=0, NotChecked=0, Total=2756 [2018-09-14 18:16:05,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40057 states. [2018-09-14 18:16:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40057 to 37576. [2018-09-14 18:16:06,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37576 states. [2018-09-14 18:16:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37576 states to 37576 states and 46400 transitions. [2018-09-14 18:16:06,764 INFO L78 Accepts]: Start accepts. Automaton has 37576 states and 46400 transitions. Word has length 274 [2018-09-14 18:16:06,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:06,764 INFO L480 AbstractCegarLoop]: Abstraction has 37576 states and 46400 transitions. [2018-09-14 18:16:06,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-14 18:16:06,765 INFO L276 IsEmpty]: Start isEmpty. Operand 37576 states and 46400 transitions. [2018-09-14 18:16:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-09-14 18:16:06,780 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:06,781 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:16:06,781 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:06,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1216871110, now seen corresponding path program 1 times [2018-09-14 18:16:06,781 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:06,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:06,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:06,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:06,783 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:07,253 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 18:16:07,522 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-14 18:16:07,987 WARN L178 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-14 18:16:08,626 WARN L178 SmtUtils]: Spent 539.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2018-09-14 18:16:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 248 proven. 88 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 18:16:09,047 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:09,047 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:16:09,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:09,058 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:09,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 234 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-09-14 18:16:09,439 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:10,246 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 147 proven. 177 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-14 18:16:10,268 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:16:10,269 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [12, 5] total 17 [2018-09-14 18:16:10,269 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:16:10,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:16:10,270 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:16:10,270 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2018-09-14 18:16:10,270 INFO L87 Difference]: Start difference. First operand 37576 states and 46400 transitions. Second operand 5 states. [2018-09-14 18:16:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:17,724 INFO L93 Difference]: Finished difference Result 75337 states and 93658 transitions. [2018-09-14 18:16:17,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:16:17,725 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 350 [2018-09-14 18:16:17,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:17,924 INFO L225 Difference]: With dead ends: 75337 [2018-09-14 18:16:17,924 INFO L226 Difference]: Without dead ends: 37767 [2018-09-14 18:16:18,042 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 695 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2018-09-14 18:16:18,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37767 states. [2018-09-14 18:16:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37767 to 37616. [2018-09-14 18:16:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37616 states. [2018-09-14 18:16:18,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37616 states to 37616 states and 46435 transitions. [2018-09-14 18:16:18,696 INFO L78 Accepts]: Start accepts. Automaton has 37616 states and 46435 transitions. Word has length 350 [2018-09-14 18:16:18,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:18,697 INFO L480 AbstractCegarLoop]: Abstraction has 37616 states and 46435 transitions. [2018-09-14 18:16:18,697 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:16:18,697 INFO L276 IsEmpty]: Start isEmpty. Operand 37616 states and 46435 transitions. [2018-09-14 18:16:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-09-14 18:16:18,716 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:18,717 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:16:18,717 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:18,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1868754189, now seen corresponding path program 1 times [2018-09-14 18:16:18,719 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:18,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:18,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:18,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:18,720 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:18,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:19,243 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:16:19,452 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:16:19,684 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-14 18:16:20,122 WARN L178 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 18:16:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 206 proven. 221 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:16:21,008 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:21,008 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:16:21,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:21,019 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:21,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:22,232 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-14 18:16:22,494 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 380 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-14 18:16:22,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:22,779 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-14 18:16:22,972 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-09-14 18:16:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 257 proven. 88 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-14 18:16:23,427 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:23,427 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:16:23,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:23,442 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:23,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 329 proven. 53 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-09-14 18:16:24,213 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:25,198 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 157 proven. 270 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:16:25,200 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:16:25,201 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 5, 8, 8] total 27 [2018-09-14 18:16:25,201 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:16:25,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-14 18:16:25,203 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-14 18:16:25,203 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2018-09-14 18:16:25,204 INFO L87 Difference]: Start difference. First operand 37616 states and 46435 transitions. Second operand 16 states. [2018-09-14 18:16:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:16:54,901 INFO L93 Difference]: Finished difference Result 95441 states and 119999 transitions. [2018-09-14 18:16:54,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-09-14 18:16:54,901 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 439 [2018-09-14 18:16:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:16:55,181 INFO L225 Difference]: With dead ends: 95441 [2018-09-14 18:16:55,181 INFO L226 Difference]: Without dead ends: 54053 [2018-09-14 18:16:55,374 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1874 GetRequests, 1791 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1316, Invalid=5164, Unknown=0, NotChecked=0, Total=6480 [2018-09-14 18:16:55,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54053 states. [2018-09-14 18:16:56,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54053 to 52728. [2018-09-14 18:16:56,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52728 states. [2018-09-14 18:16:56,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52728 states to 52728 states and 61169 transitions. [2018-09-14 18:16:56,338 INFO L78 Accepts]: Start accepts. Automaton has 52728 states and 61169 transitions. Word has length 439 [2018-09-14 18:16:56,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:16:56,339 INFO L480 AbstractCegarLoop]: Abstraction has 52728 states and 61169 transitions. [2018-09-14 18:16:56,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-14 18:16:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 52728 states and 61169 transitions. [2018-09-14 18:16:56,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2018-09-14 18:16:56,368 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:16:56,369 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:16:56,369 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:16:56,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1225087504, now seen corresponding path program 1 times [2018-09-14 18:16:56,370 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:16:56,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:56,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:56,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:16:56,371 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:16:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:57,495 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 18:16:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 157 proven. 170 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-09-14 18:16:57,723 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:16:57,723 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:16:57,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:16:57,732 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:16:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:16:57,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:16:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2018-09-14 18:16:58,152 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:16:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 147 proven. 186 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-09-14 18:16:58,735 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:16:58,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 12 [2018-09-14 18:16:58,736 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:16:58,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:16:58,737 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:16:58,737 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:16:58,737 INFO L87 Difference]: Start difference. First operand 52728 states and 61169 transitions. Second operand 5 states. [2018-09-14 18:17:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:17:06,898 INFO L93 Difference]: Finished difference Result 122095 states and 144213 transitions. [2018-09-14 18:17:06,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:17:06,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 560 [2018-09-14 18:17:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:17:07,177 INFO L225 Difference]: With dead ends: 122095 [2018-09-14 18:17:07,177 INFO L226 Difference]: Without dead ends: 69373 [2018-09-14 18:17:07,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1134 GetRequests, 1114 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:17:07,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69373 states. [2018-09-14 18:17:08,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69373 to 68602. [2018-09-14 18:17:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68602 states. [2018-09-14 18:17:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68602 states to 68602 states and 80252 transitions. [2018-09-14 18:17:08,574 INFO L78 Accepts]: Start accepts. Automaton has 68602 states and 80252 transitions. Word has length 560 [2018-09-14 18:17:08,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:17:08,574 INFO L480 AbstractCegarLoop]: Abstraction has 68602 states and 80252 transitions. [2018-09-14 18:17:08,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:17:08,575 INFO L276 IsEmpty]: Start isEmpty. Operand 68602 states and 80252 transitions. [2018-09-14 18:17:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2018-09-14 18:17:08,580 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:17:08,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:17:08,581 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:17:08,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1760472468, now seen corresponding path program 1 times [2018-09-14 18:17:08,581 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:17:08,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:08,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:08,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:08,582 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:17:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:09,042 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:17:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-14 18:17:09,494 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:09,494 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:17:09,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:09,502 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:09,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:17:10,431 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:17:10,663 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:17:10,663 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2018-09-14 18:17:10,663 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:17:10,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:17:10,664 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:17:10,664 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:17:10,665 INFO L87 Difference]: Start difference. First operand 68602 states and 80252 transitions. Second operand 3 states. [2018-09-14 18:17:14,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:17:14,900 INFO L93 Difference]: Finished difference Result 152225 states and 184536 transitions. [2018-09-14 18:17:14,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:17:14,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 584 [2018-09-14 18:17:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:17:15,233 INFO L225 Difference]: With dead ends: 152225 [2018-09-14 18:17:15,233 INFO L226 Difference]: Without dead ends: 83629 [2018-09-14 18:17:15,578 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1178 GetRequests, 1170 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:17:15,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83629 states. [2018-09-14 18:17:17,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83629 to 81482. [2018-09-14 18:17:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81482 states. [2018-09-14 18:17:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81482 states to 81482 states and 95356 transitions. [2018-09-14 18:17:17,763 INFO L78 Accepts]: Start accepts. Automaton has 81482 states and 95356 transitions. Word has length 584 [2018-09-14 18:17:17,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:17:17,766 INFO L480 AbstractCegarLoop]: Abstraction has 81482 states and 95356 transitions. [2018-09-14 18:17:17,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:17:17,767 INFO L276 IsEmpty]: Start isEmpty. Operand 81482 states and 95356 transitions. [2018-09-14 18:17:17,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1089 [2018-09-14 18:17:17,792 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:17:17,794 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:17:17,794 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:17:17,794 INFO L82 PathProgramCache]: Analyzing trace with hash 95886104, now seen corresponding path program 1 times [2018-09-14 18:17:17,795 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:17:17,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:17,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:17,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:17:17,796 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:17:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:25,321 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 214 proven. 766 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-14 18:17:25,321 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:25,321 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:17:25,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:25,329 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:25,583 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 631 proven. 2 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-09-14 18:17:26,132 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:26,354 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 31 [2018-09-14 18:17:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 424 proven. 88 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2018-09-14 18:17:27,663 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:17:27,663 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 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:17:27,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:17:27,681 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:17:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:17:28,301 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:17:28,974 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 631 proven. 2 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-09-14 18:17:28,974 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:17:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 985 backedges. 424 proven. 88 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2018-09-14 18:17:30,102 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:17:30,103 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 5, 5, 5, 5] total 32 [2018-09-14 18:17:30,104 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:17:30,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-09-14 18:17:30,110 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-09-14 18:17:30,111 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2018-09-14 18:17:30,112 INFO L87 Difference]: Start difference. First operand 81482 states and 95356 transitions. Second operand 30 states. [2018-09-14 18:17:44,350 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2018-09-14 18:17:47,199 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2018-09-14 18:17:51,976 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 23 [2018-09-14 18:17:53,606 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 20 [2018-09-14 18:17:54,600 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 41 [2018-09-14 18:17:54,912 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 38 [2018-09-14 18:17:56,136 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 26 [2018-09-14 18:17:57,479 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 30 [2018-09-14 18:17:59,410 WARN L178 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2018-09-14 18:18:00,915 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2018-09-14 18:18:02,029 WARN L178 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2018-09-14 18:18:03,277 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2018-09-14 18:18:04,530 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 19 [2018-09-14 18:18:15,727 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 Received shutdown request... [2018-09-14 18:18:24,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2018-09-14 18:18:24,967 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:18:24,973 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:18:24,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:18:24 BoogieIcfgContainer [2018-09-14 18:18:24,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:18:24,974 INFO L168 Benchmark]: Toolchain (without parser) took 226106.36 ms. Allocated memory was 1.5 GB in the beginning and 3.5 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 950.0 MB. Max. memory is 7.1 GB. [2018-09-14 18:18:24,975 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-09-14 18:18:24,975 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1788.83 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: 182.6 MB). Peak memory consumption was 182.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:18:24,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 209.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:18:24,977 INFO L168 Benchmark]: Boogie Preprocessor took 608.36 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 857.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:18:24,978 INFO L168 Benchmark]: RCFGBuilder took 8195.24 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 489.9 MB). Peak memory consumption was 489.9 MB. Max. memory is 7.1 GB. [2018-09-14 18:18:24,978 INFO L168 Benchmark]: TraceAbstraction took 215296.58 ms. Allocated memory was 2.4 GB in the beginning and 3.5 GB in the end (delta: 1.1 GB). Free memory was 1.8 GB in the beginning and 2.4 GB in the end (delta: -649.5 MB). Peak memory consumption was 470.9 MB. Max. memory is 7.1 GB. [2018-09-14 18:18:24,984 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1788.83 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: 182.6 MB). Peak memory consumption was 182.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 209.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 608.36 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 857.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8195.24 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 489.9 MB). Peak memory consumption was 489.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215296.58 ms. Allocated memory was 2.4 GB in the beginning and 3.5 GB in the end (delta: 1.1 GB). Free memory was 1.8 GB in the beginning and 2.4 GB in the end (delta: -649.5 MB). Peak memory consumption was 470.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while BasicCegarLoop was constructing difference of abstraction (81482states) and FLOYD_HOARE automaton (currently 175 states, 30 states before enhancement), while ReachableStatesComputation was computing reachable states (66097 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 215.2s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 173.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3439 SDtfs, 89388 SDslu, 4853 SDs, 0 SdLazy, 112315 SolverSat, 18930 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 125.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12032 GetRequests, 11588 SyntacticMatches, 39 SemanticMatches, 405 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17746 ImplicationChecksByTransitivity, 25.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81482occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 8637 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 23.4s InterpolantComputationTime, 9967 NumberOfCodeBlocks, 9967 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 15650 ConstructedInterpolants, 0 QuantifiedInterpolants, 54406657 SizeOfPredicates, 29 NumberOfNonLiveVariables, 8352 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 36 InterpolantComputations, 11 PerfectInterpolantSequences, 9471/12078 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-18-24-998.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem18_label42_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-18-24-998.csv Completed graceful shutdown