java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:27:09,476 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:27:09,478 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:27:09,493 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:27:09,494 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:27:09,495 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:27:09,499 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:27:09,503 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:27:09,506 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:27:09,507 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:27:09,509 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:27:09,510 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:27:09,511 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:27:09,512 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:27:09,521 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:27:09,522 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:27:09,526 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:27:09,528 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:27:09,532 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:27:09,534 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:27:09,537 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:27:09,539 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:27:09,543 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:27:09,543 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:27:09,543 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:27:09,546 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:27:09,548 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:27:09,549 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:27:09,550 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:27:09,551 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:27:09,553 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:27:09,554 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:27:09,554 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:27:09,555 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:27:09,556 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:27:09,559 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:27:09,559 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:27:09,589 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:27:09,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:27:09,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:27:09,591 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:27:09,591 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:27:09,592 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:27:09,592 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:27:09,592 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:27:09,592 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:27:09,593 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:27:09,593 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:27:09,593 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:27:09,594 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:27:09,594 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:27:09,594 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:27:09,596 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:27:09,596 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:27:09,596 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:27:09,596 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:27:09,596 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:27:09,597 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:27:09,597 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:27:09,597 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:27:09,597 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:27:09,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:27:09,599 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:27:09,599 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:27:09,599 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:27:09,600 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:27:09,600 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:27:09,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:27:09,600 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:27:09,601 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:27:09,601 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:27:09,654 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:27:09,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:27:09,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:27:09,678 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:27:09,678 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:27:09,679 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c [2018-09-18 11:27:10,061 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f98f9dd/78d3d57c10044136a15535b35b8448ae/FLAG36e3a5661 [2018-09-18 11:27:10,501 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:27:10,502 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c [2018-09-18 11:27:10,529 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f98f9dd/78d3d57c10044136a15535b35b8448ae/FLAG36e3a5661 [2018-09-18 11:27:10,546 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4f98f9dd/78d3d57c10044136a15535b35b8448ae [2018-09-18 11:27:10,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:27:10,563 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:27:10,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:27:10,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:27:10,573 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:27:10,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:27:10" (1/1) ... [2018-09-18 11:27:10,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd8af40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:10, skipping insertion in model container [2018-09-18 11:27:10,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:27:10" (1/1) ... [2018-09-18 11:27:10,590 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:27:12,117 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:27:12,139 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:27:12,867 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:27:13,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13 WrapperNode [2018-09-18 11:27:13,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:27:13,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:27:13,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:27:13,164 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:27:13,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (1/1) ... [2018-09-18 11:27:13,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (1/1) ... [2018-09-18 11:27:13,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:27:13,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:27:13,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:27:13,434 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:27:14,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (1/1) ... [2018-09-18 11:27:14,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (1/1) ... [2018-09-18 11:27:14,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (1/1) ... [2018-09-18 11:27:14,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (1/1) ... [2018-09-18 11:27:14,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (1/1) ... [2018-09-18 11:27:14,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (1/1) ... [2018-09-18 11:27:14,273 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (1/1) ... [2018-09-18 11:27:14,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:27:14,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:27:14,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:27:14,351 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:27:14,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:27:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:27:14,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:27:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:27:14,424 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:27:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:27:14,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:27:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:27:14,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:27:14,425 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:27:14,425 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:27:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:27:14,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:27:14,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:27:14,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:27:26,744 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:27:26,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:27:26 BoogieIcfgContainer [2018-09-18 11:27:26,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:27:26,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:27:26,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:27:26,749 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:27:26,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:27:10" (1/3) ... [2018-09-18 11:27:26,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8047ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:27:26, skipping insertion in model container [2018-09-18 11:27:26,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:27:13" (2/3) ... [2018-09-18 11:27:26,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f8047ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:27:26, skipping insertion in model container [2018-09-18 11:27:26,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:27:26" (3/3) ... [2018-09-18 11:27:26,753 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label01_true-unreach-call.c [2018-09-18 11:27:26,763 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:27:26,776 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:27:26,849 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:27:26,850 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:27:26,850 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:27:26,850 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:27:26,850 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:27:26,850 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:27:26,850 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:27:26,851 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:27:26,851 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:27:26,894 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:27:26,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-18 11:27:26,904 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:27:26,906 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] [2018-09-18 11:27:26,907 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:27:26,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1285582812, now seen corresponding path program 1 times [2018-09-18 11:27:26,916 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:27:26,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:26,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:26,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:26,974 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:27:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:27,405 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:27:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:27:27,515 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:27:27,516 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:27:27,516 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:27:27,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:27:27,539 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:27:27,540 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:27:27,543 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:27:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:27:34,762 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:27:34,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:27:34,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-09-18 11:27:34,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:27:34,799 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:27:34,799 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:27:34,811 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:27:34,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:27:34,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:27:34,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:27:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-09-18 11:27:34,987 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 54 [2018-09-18 11:27:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:27:34,989 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-09-18 11:27:34,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:27:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-09-18 11:27:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-09-18 11:27:35,005 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:27:35,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:27:35,006 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:27:35,007 INFO L82 PathProgramCache]: Analyzing trace with hash -175316350, now seen corresponding path program 1 times [2018-09-18 11:27:35,007 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:27:35,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:35,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:35,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:35,010 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:27:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:35,361 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:27:35,362 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:27:35,362 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:27:35,362 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:27:35,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:27:35,365 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:27:35,365 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:27:35,365 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-09-18 11:27:51,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:27:51,510 INFO L93 Difference]: Finished difference Result 6333 states and 12134 transitions. [2018-09-18 11:27:51,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:27:51,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-09-18 11:27:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:27:51,549 INFO L225 Difference]: With dead ends: 6333 [2018-09-18 11:27:51,550 INFO L226 Difference]: Without dead ends: 4735 [2018-09-18 11:27:51,559 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:27:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4735 states. [2018-09-18 11:27:51,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4735 to 4700. [2018-09-18 11:27:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-09-18 11:27:51,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7678 transitions. [2018-09-18 11:27:51,722 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7678 transitions. Word has length 132 [2018-09-18 11:27:51,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:27:51,723 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7678 transitions. [2018-09-18 11:27:51,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:27:51,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7678 transitions. [2018-09-18 11:27:51,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-18 11:27:51,732 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:27:51,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:27:51,738 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:27:51,739 INFO L82 PathProgramCache]: Analyzing trace with hash 2020767262, now seen corresponding path program 1 times [2018-09-18 11:27:51,739 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:27:51,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:51,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:27:51,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:27:51,741 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:27:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:27:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:27:51,945 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:27:51,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:27:51,946 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:27:51,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:27:51,946 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:27:51,947 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:27:51,947 INFO L87 Difference]: Start difference. First operand 4700 states and 7678 transitions. Second operand 5 states. [2018-09-18 11:28:00,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:28:00,299 INFO L93 Difference]: Finished difference Result 14300 states and 23682 transitions. [2018-09-18 11:28:00,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:28:00,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-09-18 11:28:00,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:28:00,356 INFO L225 Difference]: With dead ends: 14300 [2018-09-18 11:28:00,356 INFO L226 Difference]: Without dead ends: 9606 [2018-09-18 11:28:00,374 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:28:00,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-09-18 11:28:00,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-09-18 11:28:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-09-18 11:28:00,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14361 transitions. [2018-09-18 11:28:00,850 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14361 transitions. Word has length 134 [2018-09-18 11:28:00,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:28:00,851 INFO L480 AbstractCegarLoop]: Abstraction has 9524 states and 14361 transitions. [2018-09-18 11:28:00,851 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:28:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14361 transitions. [2018-09-18 11:28:00,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-18 11:28:00,856 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:28:00,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:28:00,856 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:28:00,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1670146821, now seen corresponding path program 1 times [2018-09-18 11:28:00,857 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:28:00,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:00,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:00,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:00,858 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:28:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:01,298 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:28:01,298 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:28:01,299 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:28:01,299 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:28:01,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:28:01,299 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:28:01,300 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:28:01,300 INFO L87 Difference]: Start difference. First operand 9524 states and 14361 transitions. Second operand 6 states. [2018-09-18 11:28:20,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:28:20,501 INFO L93 Difference]: Finished difference Result 38089 states and 61113 transitions. [2018-09-18 11:28:20,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:28:20,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-09-18 11:28:20,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:28:20,652 INFO L225 Difference]: With dead ends: 38089 [2018-09-18 11:28:20,652 INFO L226 Difference]: Without dead ends: 28571 [2018-09-18 11:28:20,726 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:28:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28571 states. [2018-09-18 11:28:21,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28571 to 28511. [2018-09-18 11:28:21,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28511 states. [2018-09-18 11:28:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28511 states to 28511 states and 41733 transitions. [2018-09-18 11:28:21,482 INFO L78 Accepts]: Start accepts. Automaton has 28511 states and 41733 transitions. Word has length 145 [2018-09-18 11:28:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:28:21,483 INFO L480 AbstractCegarLoop]: Abstraction has 28511 states and 41733 transitions. [2018-09-18 11:28:21,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:28:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 28511 states and 41733 transitions. [2018-09-18 11:28:21,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-09-18 11:28:21,490 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:28:21,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:28:21,491 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:28:21,491 INFO L82 PathProgramCache]: Analyzing trace with hash 160089495, now seen corresponding path program 1 times [2018-09-18 11:28:21,491 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:28:21,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:21,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:21,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:21,493 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:28:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:21,769 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:28:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:28:22,232 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:28:22,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:28:22,233 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:28:22,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:28:22,233 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:28:22,234 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:28:22,234 INFO L87 Difference]: Start difference. First operand 28511 states and 41733 transitions. Second operand 6 states. [2018-09-18 11:28:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:28:36,775 INFO L93 Difference]: Finished difference Result 76161 states and 117740 transitions. [2018-09-18 11:28:36,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:28:36,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2018-09-18 11:28:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:28:36,985 INFO L225 Difference]: With dead ends: 76161 [2018-09-18 11:28:36,985 INFO L226 Difference]: Without dead ends: 47656 [2018-09-18 11:28:37,082 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:28:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47656 states. [2018-09-18 11:28:37,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47656 to 47493. [2018-09-18 11:28:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47493 states. [2018-09-18 11:28:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47493 states to 47493 states and 66738 transitions. [2018-09-18 11:28:38,135 INFO L78 Accepts]: Start accepts. Automaton has 47493 states and 66738 transitions. Word has length 179 [2018-09-18 11:28:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:28:38,136 INFO L480 AbstractCegarLoop]: Abstraction has 47493 states and 66738 transitions. [2018-09-18 11:28:38,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:28:38,136 INFO L276 IsEmpty]: Start isEmpty. Operand 47493 states and 66738 transitions. [2018-09-18 11:28:38,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-09-18 11:28:38,147 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:28:38,147 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:28:38,148 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:28:38,148 INFO L82 PathProgramCache]: Analyzing trace with hash -957966671, now seen corresponding path program 1 times [2018-09-18 11:28:38,148 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:28:38,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:38,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:38,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:38,152 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:28:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:38,446 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:28:39,455 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 94 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:28:39,456 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:28:39,456 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:28:39,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:39,469 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:28:39,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:39,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:28:40,123 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 11:28:40,123 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:28:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 94 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:28:41,011 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:28:41,011 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:28:41,011 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:28:41,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:28:41,012 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:28:41,012 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:28:41,013 INFO L87 Difference]: Start difference. First operand 47493 states and 66738 transitions. Second operand 5 states. [2018-09-18 11:28:56,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:28:56,142 INFO L93 Difference]: Finished difference Result 123840 states and 186061 transitions. [2018-09-18 11:28:56,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:28:56,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 243 [2018-09-18 11:28:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:28:56,565 INFO L225 Difference]: With dead ends: 123840 [2018-09-18 11:28:56,566 INFO L226 Difference]: Without dead ends: 76353 [2018-09-18 11:28:56,808 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 480 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:28:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76353 states. [2018-09-18 11:28:58,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76353 to 76174. [2018-09-18 11:28:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76174 states. [2018-09-18 11:28:58,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76174 states to 76174 states and 108387 transitions. [2018-09-18 11:28:58,777 INFO L78 Accepts]: Start accepts. Automaton has 76174 states and 108387 transitions. Word has length 243 [2018-09-18 11:28:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:28:58,777 INFO L480 AbstractCegarLoop]: Abstraction has 76174 states and 108387 transitions. [2018-09-18 11:28:58,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:28:58,779 INFO L276 IsEmpty]: Start isEmpty. Operand 76174 states and 108387 transitions. [2018-09-18 11:28:58,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-09-18 11:28:58,801 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:28:58,801 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:28:58,802 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:28:58,802 INFO L82 PathProgramCache]: Analyzing trace with hash 203800557, now seen corresponding path program 1 times [2018-09-18 11:28:58,802 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:28:58,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:58,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:28:58,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:28:58,805 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:28:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:28:59,137 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-09-18 11:28:59,138 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:28:59,138 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:28:59,138 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:28:59,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:28:59,139 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:28:59,139 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:28:59,140 INFO L87 Difference]: Start difference. First operand 76174 states and 108387 transitions. Second operand 3 states. [2018-09-18 11:29:08,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:29:08,424 INFO L93 Difference]: Finished difference Result 166541 states and 244988 transitions. [2018-09-18 11:29:08,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:29:08,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2018-09-18 11:29:08,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:29:08,828 INFO L225 Difference]: With dead ends: 166541 [2018-09-18 11:29:08,828 INFO L226 Difference]: Without dead ends: 90373 [2018-09-18 11:29:09,023 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:29:09,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90373 states. [2018-09-18 11:29:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90373 to 90373. [2018-09-18 11:29:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90373 states. [2018-09-18 11:29:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90373 states to 90373 states and 133347 transitions. [2018-09-18 11:29:11,792 INFO L78 Accepts]: Start accepts. Automaton has 90373 states and 133347 transitions. Word has length 295 [2018-09-18 11:29:11,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:29:11,793 INFO L480 AbstractCegarLoop]: Abstraction has 90373 states and 133347 transitions. [2018-09-18 11:29:11,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:29:11,793 INFO L276 IsEmpty]: Start isEmpty. Operand 90373 states and 133347 transitions. [2018-09-18 11:29:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-09-18 11:29:11,819 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:29:11,819 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:29:11,819 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:29:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1925441408, now seen corresponding path program 1 times [2018-09-18 11:29:11,820 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:29:11,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:11,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:11,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:11,821 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:29:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:12,126 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-09-18 11:29:12,126 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:29:12,126 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:29:12,126 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:29:12,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:29:12,127 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:29:12,128 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:29:12,128 INFO L87 Difference]: Start difference. First operand 90373 states and 133347 transitions. Second operand 4 states. [2018-09-18 11:29:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:29:24,049 INFO L93 Difference]: Finished difference Result 290845 states and 462046 transitions. [2018-09-18 11:29:24,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:29:24,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 322 [2018-09-18 11:29:24,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:29:24,830 INFO L225 Difference]: With dead ends: 290845 [2018-09-18 11:29:24,830 INFO L226 Difference]: Without dead ends: 200478 [2018-09-18 11:29:25,074 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:29:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200478 states. [2018-09-18 11:29:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200478 to 195842. [2018-09-18 11:29:29,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195842 states. [2018-09-18 11:29:29,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195842 states to 195842 states and 286319 transitions. [2018-09-18 11:29:29,514 INFO L78 Accepts]: Start accepts. Automaton has 195842 states and 286319 transitions. Word has length 322 [2018-09-18 11:29:29,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:29:29,515 INFO L480 AbstractCegarLoop]: Abstraction has 195842 states and 286319 transitions. [2018-09-18 11:29:29,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:29:29,515 INFO L276 IsEmpty]: Start isEmpty. Operand 195842 states and 286319 transitions. [2018-09-18 11:29:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-09-18 11:29:29,638 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:29:29,639 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:29:29,639 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:29:29,639 INFO L82 PathProgramCache]: Analyzing trace with hash 883729818, now seen corresponding path program 1 times [2018-09-18 11:29:29,640 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:29:29,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:29,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:29,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:29,641 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:29:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 220 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:29:30,133 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:30,133 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:29:30,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:30,141 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:29:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:30,297 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:29:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 11:29:31,623 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:29:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 220 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:29:32,181 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:32,181 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 [2018-09-18 11:29:32,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:32,197 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:29:32,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:32,528 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:29:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 11:29:32,708 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:29:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 220 proven. 102 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-09-18 11:29:32,947 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:29:32,947 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:29:32,947 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:29:32,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:29:32,949 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:29:32,949 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:29:32,950 INFO L87 Difference]: Start difference. First operand 195842 states and 286319 transitions. Second operand 9 states. [2018-09-18 11:29:52,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:29:52,122 INFO L93 Difference]: Finished difference Result 428351 states and 714174 transitions. [2018-09-18 11:29:52,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:29:52,122 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 502 [2018-09-18 11:29:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:29:53,140 INFO L225 Difference]: With dead ends: 428351 [2018-09-18 11:29:53,140 INFO L226 Difference]: Without dead ends: 197355 [2018-09-18 11:29:53,604 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2024 GetRequests, 2004 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:29:53,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197355 states. [2018-09-18 11:29:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197355 to 186895. [2018-09-18 11:29:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186895 states. [2018-09-18 11:29:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186895 states to 186895 states and 268639 transitions. [2018-09-18 11:29:59,367 INFO L78 Accepts]: Start accepts. Automaton has 186895 states and 268639 transitions. Word has length 502 [2018-09-18 11:29:59,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:29:59,368 INFO L480 AbstractCegarLoop]: Abstraction has 186895 states and 268639 transitions. [2018-09-18 11:29:59,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:29:59,368 INFO L276 IsEmpty]: Start isEmpty. Operand 186895 states and 268639 transitions. [2018-09-18 11:29:59,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-09-18 11:29:59,478 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:29:59,478 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:29:59,478 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:29:59,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1881049752, now seen corresponding path program 1 times [2018-09-18 11:29:59,479 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:29:59,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:59,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:59,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:29:59,480 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:29:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:29:59,932 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 94 proven. 194 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:29:59,933 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:29:59,933 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 [2018-09-18 11:29:59,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:29:59,941 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:30:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:00,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:30:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-09-18 11:30:00,739 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:30:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 94 proven. 194 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:30:01,503 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:30:01,503 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2018-09-18 11:30:01,503 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:01,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:30:01,504 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:30:01,504 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-09-18 11:30:01,505 INFO L87 Difference]: Start difference. First operand 186895 states and 268639 transitions. Second operand 5 states. [2018-09-18 11:30:13,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:13,207 INFO L93 Difference]: Finished difference Result 420314 states and 645591 transitions. [2018-09-18 11:30:13,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:30:13,208 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 522 [2018-09-18 11:30:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:14,047 INFO L225 Difference]: With dead ends: 420314 [2018-09-18 11:30:14,047 INFO L226 Difference]: Without dead ends: 233425 [2018-09-18 11:30:14,440 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1053 GetRequests, 1038 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:30:14,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233425 states. [2018-09-18 11:30:18,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233425 to 228681. [2018-09-18 11:30:18,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228681 states. [2018-09-18 11:30:20,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228681 states to 228681 states and 308545 transitions. [2018-09-18 11:30:20,361 INFO L78 Accepts]: Start accepts. Automaton has 228681 states and 308545 transitions. Word has length 522 [2018-09-18 11:30:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:20,361 INFO L480 AbstractCegarLoop]: Abstraction has 228681 states and 308545 transitions. [2018-09-18 11:30:20,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:30:20,362 INFO L276 IsEmpty]: Start isEmpty. Operand 228681 states and 308545 transitions. [2018-09-18 11:30:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2018-09-18 11:30:20,481 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:20,482 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:20,482 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:20,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1901126552, now seen corresponding path program 1 times [2018-09-18 11:30:20,482 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:20,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:20,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:20,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:20,484 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 14 proven. 133 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2018-09-18 11:30:21,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:30:21,853 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:30:21,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:21,861 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:30:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:22,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:30:27,303 WARN L178 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 33 DAG size of output: 25 [2018-09-18 11:30:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 14 proven. 133 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2018-09-18 11:30:32,984 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:30:33,744 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2018-09-18 11:30:33,765 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:30:33,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 9 [2018-09-18 11:30:33,766 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:33,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:30:33,767 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:30:33,767 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2018-09-18 11:30:33,767 INFO L87 Difference]: Start difference. First operand 228681 states and 308545 transitions. Second operand 3 states. [2018-09-18 11:30:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:41,718 INFO L93 Difference]: Finished difference Result 472307 states and 643983 transitions. [2018-09-18 11:30:41,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:30:41,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 718 [2018-09-18 11:30:41,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:42,574 INFO L225 Difference]: With dead ends: 472307 [2018-09-18 11:30:42,574 INFO L226 Difference]: Without dead ends: 244400 [2018-09-18 11:30:43,801 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1450 GetRequests, 1438 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2018-09-18 11:30:43,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244400 states. [2018-09-18 11:30:47,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244400 to 230350. [2018-09-18 11:30:47,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230350 states. [2018-09-18 11:30:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230350 states to 230350 states and 297207 transitions. [2018-09-18 11:30:48,147 INFO L78 Accepts]: Start accepts. Automaton has 230350 states and 297207 transitions. Word has length 718 [2018-09-18 11:30:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:48,148 INFO L480 AbstractCegarLoop]: Abstraction has 230350 states and 297207 transitions. [2018-09-18 11:30:48,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:30:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 230350 states and 297207 transitions. [2018-09-18 11:30:48,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 741 [2018-09-18 11:30:48,228 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:48,228 INFO L376 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:48,229 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:48,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1860215346, now seen corresponding path program 1 times [2018-09-18 11:30:48,229 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:48,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:48,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:48,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:48,230 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:49,045 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-09-18 11:30:50,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 421 proven. 407 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-09-18 11:30:50,690 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:30:50,690 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:30:50,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:50,701 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:30:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:50,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:30:51,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 885 proven. 2 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2018-09-18 11:30:51,734 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-18 11:30:51,869 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 11:30:52,071 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:30:52,071 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:30:52,077 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:30:52,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:30:52 BoogieIcfgContainer [2018-09-18 11:30:52,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:30:52,078 INFO L168 Benchmark]: Toolchain (without parser) took 221518.17 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-09-18 11:30:52,079 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:30:52,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2599.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:30:52,080 INFO L168 Benchmark]: Boogie Procedure Inliner took 268.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:30:52,081 INFO L168 Benchmark]: Boogie Preprocessor took 917.03 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 901.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:30:52,084 INFO L168 Benchmark]: RCFGBuilder took 12394.19 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 657.8 MB). Peak memory consumption was 657.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:30:52,084 INFO L168 Benchmark]: TraceAbstraction took 205331.77 ms. Allocated memory was 2.4 GB in the beginning and 5.5 GB in the end (delta: 3.1 GB). Free memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-09-18 11:30:52,092 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2599.39 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 268.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 917.03 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 901.8 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12394.19 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 657.8 MB). Peak memory consumption was 657.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205331.77 ms. Allocated memory was 2.4 GB in the beginning and 5.5 GB in the end (delta: 3.1 GB). Free memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was analyzing trace of length 741 with TraceHistMax 6, while TraceCheckSpWp was constructing backward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 205.2s OverallTime, 12 OverallIterations, 6 TraceHistogramMax, 148.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3917 SDtfs, 30205 SDslu, 1543 SDs, 0 SdLazy, 56416 SolverSat, 14064 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 101.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5071 GetRequests, 4979 SyntacticMatches, 21 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230350occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 27.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 34409 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 21.1s InterpolantComputationTime, 5733 NumberOfCodeBlocks, 5733 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 8199 ConstructedInterpolants, 5 QuantifiedInterpolants, 9471328 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3712 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 21 InterpolantComputations, 10 PerfectInterpolantSequences, 4341/5455 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/Problem12_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-30-52-122.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label01_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-30-52-122.csv Completed graceful shutdown