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/Problem17_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:01:42,697 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:01:42,699 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:01:42,716 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:01:42,717 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:01:42,718 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:01:42,720 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:01:42,722 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:01:42,725 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:01:42,727 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:01:42,729 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:01:42,730 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:01:42,731 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:01:42,732 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:01:42,735 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:01:42,742 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:01:42,743 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:01:42,747 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:01:42,752 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:01:42,754 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:01:42,755 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:01:42,758 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:01:42,761 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 18:01:42,761 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 18:01:42,763 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 18:01:42,764 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 18:01:42,765 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 18:01:42,766 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 18:01:42,768 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 18:01:42,771 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 18:01:42,771 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 18:01:42,772 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-14 18:01:42,772 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-14 18:01:42,772 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-14 18:01:42,774 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-14 18:01:42,775 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-14 18:01:42,776 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 18:01:42,801 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:01:42,802 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:01:42,806 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:01:42,806 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:01:42,806 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:01:42,806 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:01:42,807 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:01:42,807 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:01:42,807 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:01:42,807 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:01:42,808 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:01:42,809 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:01:42,809 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:01:42,809 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:01:42,809 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:01:42,810 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:01:42,811 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:01:42,811 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:01:42,811 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:01:42,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:01:42,813 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:01:42,813 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:01:42,814 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:01:42,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:01:42,814 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:01:42,815 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:01:42,815 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:01:42,815 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:01:42,815 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:01:42,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:01:42,816 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:01:42,816 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:01:42,816 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:01:42,876 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:01:42,893 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:01:42,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:01:42,901 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:01:42,902 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:01:42,903 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-09-14 18:01:43,270 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11465318c/a927869c5e5d4cd3bbbfd445d9f66284/FLAG6997dc0ad [2018-09-14 18:01:43,710 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:01:43,711 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-09-14 18:01:43,738 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11465318c/a927869c5e5d4cd3bbbfd445d9f66284/FLAG6997dc0ad [2018-09-14 18:01:43,759 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11465318c/a927869c5e5d4cd3bbbfd445d9f66284 [2018-09-14 18:01:43,772 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:01:43,777 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:01:43,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:01:43,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:01:43,788 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:01:43,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:01:43" (1/1) ... [2018-09-14 18:01:43,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ba51a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:43, skipping insertion in model container [2018-09-14 18:01:43,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:01:43" (1/1) ... [2018-09-14 18:01:43,806 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:01:44,765 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:01:44,786 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:01:45,166 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:01:45,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45 WrapperNode [2018-09-14 18:01:45,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:01:45,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:01:45,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:01:45,379 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:01:45,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (1/1) ... [2018-09-14 18:01:45,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (1/1) ... [2018-09-14 18:01:45,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:01:45,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:01:45,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:01:45,732 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:01:46,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (1/1) ... [2018-09-14 18:01:46,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (1/1) ... [2018-09-14 18:01:46,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (1/1) ... [2018-09-14 18:01:46,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (1/1) ... [2018-09-14 18:01:46,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (1/1) ... [2018-09-14 18:01:46,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (1/1) ... [2018-09-14 18:01:46,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (1/1) ... [2018-09-14 18:01:46,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:01:46,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:01:46,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:01:46,524 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:01:46,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (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 18:01:46,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:01:46,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:01:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:01:46,598 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:01:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:01:46,598 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:01:46,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:01:46,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:01:46,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:01:46,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:01:59,655 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:01:59,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:01:59 BoogieIcfgContainer [2018-09-14 18:01:59,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:01:59,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:01:59,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:01:59,663 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:01:59,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:01:43" (1/3) ... [2018-09-14 18:01:59,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8ffaff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:01:59, skipping insertion in model container [2018-09-14 18:01:59,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:01:45" (2/3) ... [2018-09-14 18:01:59,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8ffaff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:01:59, skipping insertion in model container [2018-09-14 18:01:59,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:01:59" (3/3) ... [2018-09-14 18:01:59,667 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label18_true-unreach-call.c [2018-09-14 18:01:59,677 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:01:59,690 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:01:59,759 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:01:59,760 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:01:59,760 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:01:59,760 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:01:59,760 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:01:59,760 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:01:59,761 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:01:59,761 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:01:59,761 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:01:59,803 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-14 18:01:59,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-14 18:01:59,813 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:01:59,814 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:01:59,815 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:01:59,821 INFO L82 PathProgramCache]: Analyzing trace with hash -2094085436, now seen corresponding path program 1 times [2018-09-14 18:01:59,824 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:01:59,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:59,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:59,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:59,878 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:02:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:02:00,358 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-14 18:02:00,382 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 18:02:00,385 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:02:00,385 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:02:00,385 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:02:00,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:02:00,408 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:02:00,409 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:02:00,412 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-14 18:02:16,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:02:16,502 INFO L93 Difference]: Finished difference Result 2142 states and 3971 transitions. [2018-09-14 18:02:16,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:02:16,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-09-14 18:02:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:02:16,537 INFO L225 Difference]: With dead ends: 2142 [2018-09-14 18:02:16,537 INFO L226 Difference]: Without dead ends: 1532 [2018-09-14 18:02:16,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:02:16,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2018-09-14 18:02:16,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1519. [2018-09-14 18:02:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2018-09-14 18:02:16,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2456 transitions. [2018-09-14 18:02:16,699 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2456 transitions. Word has length 62 [2018-09-14 18:02:16,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:02:16,700 INFO L480 AbstractCegarLoop]: Abstraction has 1519 states and 2456 transitions. [2018-09-14 18:02:16,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:02:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2456 transitions. [2018-09-14 18:02:16,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-14 18:02:16,708 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:02:16,708 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 18:02:16,709 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:02:16,709 INFO L82 PathProgramCache]: Analyzing trace with hash -858039278, now seen corresponding path program 1 times [2018-09-14 18:02:16,709 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:02:16,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:02:16,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:02:16,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:02:16,711 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:02:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:02:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:02:16,967 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:02:16,968 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 18:02:16,968 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:02:16,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:02:16,970 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:02:16,970 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 18:02:16,970 INFO L87 Difference]: Start difference. First operand 1519 states and 2456 transitions. Second operand 5 states. [2018-09-14 18:02:25,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:02:25,959 INFO L93 Difference]: Finished difference Result 4424 states and 7338 transitions. [2018-09-14 18:02:25,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:02:25,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-09-14 18:02:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:02:25,987 INFO L225 Difference]: With dead ends: 4424 [2018-09-14 18:02:25,987 INFO L226 Difference]: Without dead ends: 2911 [2018-09-14 18:02:25,993 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:02:25,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-09-14 18:02:26,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2875. [2018-09-14 18:02:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2018-09-14 18:02:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4373 transitions. [2018-09-14 18:02:26,104 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4373 transitions. Word has length 134 [2018-09-14 18:02:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:02:26,106 INFO L480 AbstractCegarLoop]: Abstraction has 2875 states and 4373 transitions. [2018-09-14 18:02:26,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:02:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4373 transitions. [2018-09-14 18:02:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-09-14 18:02:26,117 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:02:26,118 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 18:02:26,118 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:02:26,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1330082406, now seen corresponding path program 1 times [2018-09-14 18:02:26,118 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:02:26,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:02:26,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:02:26,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:02:26,120 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:02:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:02:26,490 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:02:26,490 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:02:26,491 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 18:02:26,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:02:26,501 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:02:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:02:26,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:02:53,383 WARN L178 SmtUtils]: Spent 24.25 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-09-14 18:03:13,687 WARN L178 SmtUtils]: Spent 16.09 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-09-14 18:03:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:03:14,427 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:03:17,016 WARN L178 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-09-14 18:03:17,059 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-09-14 18:03:19,652 WARN L178 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-09-14 18:03:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:03:19,988 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:03:19,988 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-09-14 18:03:19,989 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:03:19,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:03:19,992 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:03:19,992 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=161, Unknown=3, NotChecked=0, Total=210 [2018-09-14 18:03:19,993 INFO L87 Difference]: Start difference. First operand 2875 states and 4373 transitions. Second operand 6 states. [2018-09-14 18:03:54,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:03:54,277 INFO L93 Difference]: Finished difference Result 11140 states and 17631 transitions. [2018-09-14 18:03:54,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:03:54,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-09-14 18:03:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:03:54,333 INFO L225 Difference]: With dead ends: 11140 [2018-09-14 18:03:54,334 INFO L226 Difference]: Without dead ends: 8271 [2018-09-14 18:03:54,356 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=46, Invalid=161, Unknown=3, NotChecked=0, Total=210 [2018-09-14 18:03:54,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8271 states. [2018-09-14 18:03:54,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8271 to 8227. [2018-09-14 18:03:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8227 states. [2018-09-14 18:03:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8227 states to 8227 states and 12849 transitions. [2018-09-14 18:03:54,577 INFO L78 Accepts]: Start accepts. Automaton has 8227 states and 12849 transitions. Word has length 137 [2018-09-14 18:03:54,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:03:54,578 INFO L480 AbstractCegarLoop]: Abstraction has 8227 states and 12849 transitions. [2018-09-14 18:03:54,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:03:54,578 INFO L276 IsEmpty]: Start isEmpty. Operand 8227 states and 12849 transitions. [2018-09-14 18:03:54,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-09-14 18:03:54,585 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:03:54,585 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:03:54,586 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:03:54,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1486702837, now seen corresponding path program 1 times [2018-09-14 18:03:54,586 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:03:54,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:03:54,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:03:54,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:03:54,587 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:03:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:03:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:03:54,886 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:03:54,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:03:54,886 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:03:54,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:03:54,887 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:03:54,887 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:03:54,887 INFO L87 Difference]: Start difference. First operand 8227 states and 12849 transitions. Second operand 6 states. [2018-09-14 18:04:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:04:11,257 INFO L93 Difference]: Finished difference Result 26589 states and 42877 transitions. [2018-09-14 18:04:11,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-14 18:04:11,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2018-09-14 18:04:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:04:11,371 INFO L225 Difference]: With dead ends: 26589 [2018-09-14 18:04:11,371 INFO L226 Difference]: Without dead ends: 18368 [2018-09-14 18:04:11,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:04:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18368 states. [2018-09-14 18:04:11,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18368 to 18270. [2018-09-14 18:04:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18270 states. [2018-09-14 18:04:11,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18270 states to 18270 states and 25650 transitions. [2018-09-14 18:04:11,941 INFO L78 Accepts]: Start accepts. Automaton has 18270 states and 25650 transitions. Word has length 207 [2018-09-14 18:04:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:04:11,941 INFO L480 AbstractCegarLoop]: Abstraction has 18270 states and 25650 transitions. [2018-09-14 18:04:11,941 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:04:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 18270 states and 25650 transitions. [2018-09-14 18:04:11,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-14 18:04:11,953 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:11,953 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 18:04:11,954 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:11,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1133264394, now seen corresponding path program 1 times [2018-09-14 18:04:11,954 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:11,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:11,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:11,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:11,956 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:12,303 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:04:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 111 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-14 18:04:12,732 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:04:12,732 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 18:04:12,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:12,746 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:04:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:12,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:04:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:04:13,005 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:04:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:04:13,183 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:04:13,184 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:04:13,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:13,206 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:04:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:13,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:04:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:04:13,621 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:04:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (4)] Exception during sending of exit command (exit): Broken pipe [2018-09-14 18:04:14,098 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-14 18:04:14,099 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 12 [2018-09-14 18:04:14,099 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:04:14,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:04:14,100 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:04:14,100 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:04:14,101 INFO L87 Difference]: Start difference. First operand 18270 states and 25650 transitions. Second operand 5 states. [2018-09-14 18:04:19,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:04:19,562 INFO L93 Difference]: Finished difference Result 41015 states and 58466 transitions. [2018-09-14 18:04:19,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:04:19,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2018-09-14 18:04:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:04:19,653 INFO L225 Difference]: With dead ends: 41015 [2018-09-14 18:04:19,653 INFO L226 Difference]: Without dead ends: 22751 [2018-09-14 18:04:19,699 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 870 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:04:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22751 states. [2018-09-14 18:04:20,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22751 to 22713. [2018-09-14 18:04:20,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22713 states. [2018-09-14 18:04:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22713 states to 22713 states and 28396 transitions. [2018-09-14 18:04:20,181 INFO L78 Accepts]: Start accepts. Automaton has 22713 states and 28396 transitions. Word has length 220 [2018-09-14 18:04:20,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:04:20,182 INFO L480 AbstractCegarLoop]: Abstraction has 22713 states and 28396 transitions. [2018-09-14 18:04:20,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:04:20,182 INFO L276 IsEmpty]: Start isEmpty. Operand 22713 states and 28396 transitions. [2018-09-14 18:04:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-09-14 18:04:20,192 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:20,193 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-14 18:04:20,193 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:20,193 INFO L82 PathProgramCache]: Analyzing trace with hash -936554448, now seen corresponding path program 1 times [2018-09-14 18:04:20,193 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:20,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:20,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:20,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:20,195 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:20,517 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:04:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 63 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 18:04:20,711 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:04:20,712 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 18:04:20,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:20,728 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:04:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:20,803 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:04:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:04:20,873 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:04:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:04:21,262 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 18:04:21,262 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-14 18:04:21,262 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:04:21,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:04:21,264 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:04:21,264 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:04:21,264 INFO L87 Difference]: Start difference. First operand 22713 states and 28396 transitions. Second operand 3 states. [2018-09-14 18:04:25,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:04:25,093 INFO L93 Difference]: Finished difference Result 46288 states and 57893 transitions. [2018-09-14 18:04:25,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:04:25,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2018-09-14 18:04:25,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:04:25,171 INFO L225 Difference]: With dead ends: 46288 [2018-09-14 18:04:25,171 INFO L226 Difference]: Without dead ends: 23581 [2018-09-14 18:04:25,228 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 446 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:04:25,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23581 states. [2018-09-14 18:04:25,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23581 to 22713. [2018-09-14 18:04:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22713 states. [2018-09-14 18:04:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22713 states to 22713 states and 27348 transitions. [2018-09-14 18:04:25,592 INFO L78 Accepts]: Start accepts. Automaton has 22713 states and 27348 transitions. Word has length 223 [2018-09-14 18:04:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:04:25,593 INFO L480 AbstractCegarLoop]: Abstraction has 22713 states and 27348 transitions. [2018-09-14 18:04:25,593 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:04:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 22713 states and 27348 transitions. [2018-09-14 18:04:25,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-14 18:04:25,607 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:25,608 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 18:04:25,608 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:25,608 INFO L82 PathProgramCache]: Analyzing trace with hash 606214992, now seen corresponding path program 1 times [2018-09-14 18:04:25,608 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:25,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:25,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:25,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:25,609 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:04:26,238 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:04:26,238 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:04:26,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:26,255 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:04:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:26,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:04:26,602 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:04:26,602 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:04:26,757 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 18:04:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:04:27,001 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:04:27,001 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:04:27,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:27,024 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:04:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:27,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:04:27,511 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:04:27,511 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:04:27,657 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:04:27,659 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:04:27,660 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 8 [2018-09-14 18:04:27,660 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:04:27,662 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 18:04:27,662 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 18:04:27,662 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-09-14 18:04:27,662 INFO L87 Difference]: Start difference. First operand 22713 states and 27348 transitions. Second operand 7 states. [2018-09-14 18:04:39,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:04:39,326 INFO L93 Difference]: Finished difference Result 55215 states and 68261 transitions. [2018-09-14 18:04:39,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-14 18:04:39,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 322 [2018-09-14 18:04:39,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:04:39,431 INFO L225 Difference]: With dead ends: 55215 [2018-09-14 18:04:39,431 INFO L226 Difference]: Without dead ends: 32508 [2018-09-14 18:04:39,477 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1302 GetRequests, 1285 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:04:39,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32508 states. [2018-09-14 18:04:40,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32508 to 32008. [2018-09-14 18:04:40,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32008 states. [2018-09-14 18:04:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32008 states to 32008 states and 38615 transitions. [2018-09-14 18:04:40,259 INFO L78 Accepts]: Start accepts. Automaton has 32008 states and 38615 transitions. Word has length 322 [2018-09-14 18:04:40,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:04:40,260 INFO L480 AbstractCegarLoop]: Abstraction has 32008 states and 38615 transitions. [2018-09-14 18:04:40,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 18:04:40,260 INFO L276 IsEmpty]: Start isEmpty. Operand 32008 states and 38615 transitions. [2018-09-14 18:04:40,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-09-14 18:04:40,298 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:40,299 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:04:40,299 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:40,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1096113387, now seen corresponding path program 1 times [2018-09-14 18:04:40,300 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:40,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:40,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:40,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:40,301 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-09-14 18:04:40,684 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:04:40,684 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) [2018-09-14 18:04:40,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:40,698 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:04:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:40,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:04:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-09-14 18:04:40,896 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:04:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-09-14 18:04:41,023 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:04:41,024 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-09-14 18:04:41,024 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:04:41,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:04:41,025 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:04:41,025 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:04:41,025 INFO L87 Difference]: Start difference. First operand 32008 states and 38615 transitions. Second operand 3 states. [2018-09-14 18:04:46,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:04:46,823 INFO L93 Difference]: Finished difference Result 70108 states and 84848 transitions. [2018-09-14 18:04:46,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:04:46,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 403 [2018-09-14 18:04:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:04:46,924 INFO L225 Difference]: With dead ends: 70108 [2018-09-14 18:04:46,924 INFO L226 Difference]: Without dead ends: 38106 [2018-09-14 18:04:46,984 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 807 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:04:47,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38106 states. [2018-09-14 18:04:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38106 to 37232. [2018-09-14 18:04:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37232 states. [2018-09-14 18:04:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37232 states to 37232 states and 44486 transitions. [2018-09-14 18:04:47,787 INFO L78 Accepts]: Start accepts. Automaton has 37232 states and 44486 transitions. Word has length 403 [2018-09-14 18:04:47,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:04:47,787 INFO L480 AbstractCegarLoop]: Abstraction has 37232 states and 44486 transitions. [2018-09-14 18:04:47,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:04:47,787 INFO L276 IsEmpty]: Start isEmpty. Operand 37232 states and 44486 transitions. [2018-09-14 18:04:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-09-14 18:04:47,824 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:04:47,825 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:04:47,825 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:04:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash -33237442, now seen corresponding path program 1 times [2018-09-14 18:04:47,825 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:04:47,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:47,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:47,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:04:47,826 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:04:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:04:48,503 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:04:48,503 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:04:48,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:48,514 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:04:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:48,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:04:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:04:48,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:04:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:04:49,142 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:04:49,142 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:04:49,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:04:49,161 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:04:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:04:49,436 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:04:49,533 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:04:49,534 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:04:49,792 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-09-14 18:04:49,794 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:04:49,794 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-09-14 18:04:49,794 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:04:49,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 18:04:49,795 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 18:04:49,795 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:04:49,796 INFO L87 Difference]: Start difference. First operand 37232 states and 44486 transitions. Second operand 7 states. [2018-09-14 18:05:10,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:10,329 INFO L93 Difference]: Finished difference Result 105283 states and 135959 transitions. [2018-09-14 18:05:10,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-14 18:05:10,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2018-09-14 18:05:10,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:10,621 INFO L225 Difference]: With dead ends: 105283 [2018-09-14 18:05:10,621 INFO L226 Difference]: Without dead ends: 68057 [2018-09-14 18:05:10,732 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1660 GetRequests, 1645 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2018-09-14 18:05:10,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68057 states. [2018-09-14 18:05:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68057 to 67184. [2018-09-14 18:05:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67184 states. [2018-09-14 18:05:12,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67184 states to 67184 states and 80323 transitions. [2018-09-14 18:05:12,281 INFO L78 Accepts]: Start accepts. Automaton has 67184 states and 80323 transitions. Word has length 411 [2018-09-14 18:05:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:12,282 INFO L480 AbstractCegarLoop]: Abstraction has 67184 states and 80323 transitions. [2018-09-14 18:05:12,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 18:05:12,282 INFO L276 IsEmpty]: Start isEmpty. Operand 67184 states and 80323 transitions. [2018-09-14 18:05:12,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-09-14 18:05:12,345 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:12,345 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:12,346 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:12,346 INFO L82 PathProgramCache]: Analyzing trace with hash -779403212, now seen corresponding path program 1 times [2018-09-14 18:05:12,346 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:12,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:12,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:12,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:12,347 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-09-14 18:05:12,722 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:12,722 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 18:05:12,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:12,731 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:12,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2018-09-14 18:05:12,985 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2018-09-14 18:05:13,176 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 18:05:13,176 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-09-14 18:05:13,176 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:05:13,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 18:05:13,178 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 18:05:13,178 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:05:13,178 INFO L87 Difference]: Start difference. First operand 67184 states and 80323 transitions. Second operand 3 states. [2018-09-14 18:05:18,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:18,201 INFO L93 Difference]: Finished difference Result 164577 states and 199652 transitions. [2018-09-14 18:05:18,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 18:05:18,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 515 [2018-09-14 18:05:18,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:18,473 INFO L225 Difference]: With dead ends: 164577 [2018-09-14 18:05:18,473 INFO L226 Difference]: Without dead ends: 97437 [2018-09-14 18:05:18,585 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 18:05:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97437 states. [2018-09-14 18:05:19,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97437 to 96556. [2018-09-14 18:05:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96556 states. [2018-09-14 18:05:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96556 states to 96556 states and 113006 transitions. [2018-09-14 18:05:19,881 INFO L78 Accepts]: Start accepts. Automaton has 96556 states and 113006 transitions. Word has length 515 [2018-09-14 18:05:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:19,882 INFO L480 AbstractCegarLoop]: Abstraction has 96556 states and 113006 transitions. [2018-09-14 18:05:19,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 18:05:19,882 INFO L276 IsEmpty]: Start isEmpty. Operand 96556 states and 113006 transitions. [2018-09-14 18:05:19,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2018-09-14 18:05:19,941 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:19,942 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:19,942 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:19,942 INFO L82 PathProgramCache]: Analyzing trace with hash 756118400, now seen corresponding path program 1 times [2018-09-14 18:05:19,942 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:19,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:19,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:19,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:19,944 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:05:21,109 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:21,110 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 18:05:21,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:21,117 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:21,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:05:21,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:21,890 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 18:05:22,206 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-14 18:05:22,651 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:05:22,671 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:22,672 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 18:05:22,687 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:22,688 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:23,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:23,031 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:05:23,180 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 327 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2018-09-14 18:05:23,982 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:05:23,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 7 [2018-09-14 18:05:23,983 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:05:23,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:05:23,985 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:05:23,986 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-09-14 18:05:23,986 INFO L87 Difference]: Start difference. First operand 96556 states and 113006 transitions. Second operand 6 states. [2018-09-14 18:05:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:05:39,565 INFO L93 Difference]: Finished difference Result 196225 states and 238096 transitions. [2018-09-14 18:05:39,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-14 18:05:39,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 526 [2018-09-14 18:05:39,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:05:39,917 INFO L225 Difference]: With dead ends: 196225 [2018-09-14 18:05:39,917 INFO L226 Difference]: Without dead ends: 99713 [2018-09-14 18:05:40,118 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2119 GetRequests, 2100 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-09-14 18:05:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99713 states. [2018-09-14 18:05:42,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99713 to 95488. [2018-09-14 18:05:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95488 states. [2018-09-14 18:05:42,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95488 states to 95488 states and 109597 transitions. [2018-09-14 18:05:42,783 INFO L78 Accepts]: Start accepts. Automaton has 95488 states and 109597 transitions. Word has length 526 [2018-09-14 18:05:42,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:05:42,784 INFO L480 AbstractCegarLoop]: Abstraction has 95488 states and 109597 transitions. [2018-09-14 18:05:42,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:05:42,784 INFO L276 IsEmpty]: Start isEmpty. Operand 95488 states and 109597 transitions. [2018-09-14 18:05:42,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-09-14 18:05:42,844 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:05:42,845 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:05:42,845 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:05:42,846 INFO L82 PathProgramCache]: Analyzing trace with hash -105848820, now seen corresponding path program 1 times [2018-09-14 18:05:42,846 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:05:42,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:42,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:42,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:05:42,847 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:05:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:43,348 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-14 18:05:43,348 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:43,348 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 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:05:43,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:43,356 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:43,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-14 18:05:43,861 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:05:44,429 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-14 18:05:44,449 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:05:44,450 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 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:05:44,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:05:44,465 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:05:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:05:44,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:05:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 333 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-14 18:05:45,538 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-14 18:05:45,625 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-14 18:05:45,826 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:05:45,827 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:05:45,832 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:05:45,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:05:45 BoogieIcfgContainer [2018-09-14 18:05:45,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:05:45,833 INFO L168 Benchmark]: Toolchain (without parser) took 242061.03 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 896.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:05:45,834 INFO L168 Benchmark]: CDTParser took 0.23 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 18:05:45,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1599.55 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:05:45,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 351.76 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-09-14 18:05:45,838 INFO L168 Benchmark]: Boogie Preprocessor took 792.39 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 946.9 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:05:45,842 INFO L168 Benchmark]: RCFGBuilder took 13131.93 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 446.9 MB). Peak memory consumption was 446.9 MB. Max. memory is 7.1 GB. [2018-09-14 18:05:45,843 INFO L168 Benchmark]: TraceAbstraction took 226173.83 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -877.4 MB). Peak memory consumption was 440.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:05:45,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 1599.55 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: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 351.76 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 792.39 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 946.9 MB). Free memory was 1.2 GB in the beginning and 2.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 123.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13131.93 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 446.9 MB). Peak memory consumption was 446.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226173.83 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.9 GB in the beginning and 2.8 GB in the end (delta: -877.4 MB). Peak memory consumption was 440.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 173]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 173). Cancelled while BasicCegarLoop was analyzing trace of length 533 with TraceHistMax 4, while TraceCheckSpWp was constructing backward predicates, while XnfDer was eliminating 4 quantified variables from 3 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 226.0s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 145.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4044 SDtfs, 18503 SDslu, 2498 SDs, 0 SdLazy, 32672 SolverSat, 9471 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 128.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8572 GetRequests, 8461 SyntacticMatches, 31 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 55.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96556occurred in iteration=10, 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: 8.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 8450 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 63.3s InterpolantComputationTime, 7396 NumberOfCodeBlocks, 7396 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 11597 ConstructedInterpolants, 136 QuantifiedInterpolants, 11428432 SizeOfPredicates, 14 NumberOfNonLiveVariables, 6881 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 35 InterpolantComputations, 9 PerfectInterpolantSequences, 10299/10519 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/Problem17_label18_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-05-45-868.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label18_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-05-45-868.csv Completed graceful shutdown