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/Problem11_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:21:41,682 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:21:41,684 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:21:41,700 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:21:41,700 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:21:41,702 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:21:41,703 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:21:41,706 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:21:41,708 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:21:41,716 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:21:41,717 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:21:41,717 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:21:41,723 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:21:41,724 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:21:41,725 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:21:41,726 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:21:41,726 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:21:41,728 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:21:41,732 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:21:41,737 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:21:41,738 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:21:41,739 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:21:41,744 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-18 11:21:41,754 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:21:41,755 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:21:41,756 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:21:41,758 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:21:41,758 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 11:21:41,786 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:21:41,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:21:41,790 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:21:41,790 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:21:41,790 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:21:41,790 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:21:41,791 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:21:41,791 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:21:41,791 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:21:41,791 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:21:41,791 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:21:41,792 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:21:41,792 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:21:41,793 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:21:41,793 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:21:41,793 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:21:41,794 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:21:41,794 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:21:41,794 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:21:41,794 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:21:41,794 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:21:41,795 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:21:41,795 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:21:41,795 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:21:41,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:21:41,797 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:21:41,797 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:21:41,797 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:21:41,797 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:21:41,797 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:21:41,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:21:41,798 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:21:41,798 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:21:41,798 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:21:41,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:21:41,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:21:41,886 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:21:41,887 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:21:41,888 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:21:41,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c [2018-09-18 11:21:42,242 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d0630ed8/a95959f13ad743bd9e25b3f0b89d7772/FLAG49c06709c [2018-09-18 11:21:42,527 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:21:42,528 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c [2018-09-18 11:21:42,560 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d0630ed8/a95959f13ad743bd9e25b3f0b89d7772/FLAG49c06709c [2018-09-18 11:21:42,581 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d0630ed8/a95959f13ad743bd9e25b3f0b89d7772 [2018-09-18 11:21:42,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:21:42,597 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:21:42,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:21:42,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:21:42,605 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:21:42,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:21:42" (1/1) ... [2018-09-18 11:21:42,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17281938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:42, skipping insertion in model container [2018-09-18 11:21:42,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:21:42" (1/1) ... [2018-09-18 11:21:42,623 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:21:43,295 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:21:43,315 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:21:43,479 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:21:43,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43 WrapperNode [2018-09-18 11:21:43,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:21:43,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:21:43,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:21:43,549 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:21:43,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (1/1) ... [2018-09-18 11:21:43,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (1/1) ... [2018-09-18 11:21:43,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:21:43,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:21:43,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:21:43,708 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:21:43,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (1/1) ... [2018-09-18 11:21:43,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (1/1) ... [2018-09-18 11:21:43,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (1/1) ... [2018-09-18 11:21:43,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (1/1) ... [2018-09-18 11:21:44,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (1/1) ... [2018-09-18 11:21:44,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (1/1) ... [2018-09-18 11:21:44,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (1/1) ... [2018-09-18 11:21:44,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:21:44,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:21:44,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:21:44,107 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:21:44,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (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 11:21:44,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:21:44,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:21:44,180 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:21:44,180 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:21:44,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:21:44,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:21:44,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:21:44,182 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:21:48,458 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:21:48,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:21:48 BoogieIcfgContainer [2018-09-18 11:21:48,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:21:48,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:21:48,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:21:48,464 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:21:48,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:21:42" (1/3) ... [2018-09-18 11:21:48,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a02bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:21:48, skipping insertion in model container [2018-09-18 11:21:48,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:21:43" (2/3) ... [2018-09-18 11:21:48,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55a02bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:21:48, skipping insertion in model container [2018-09-18 11:21:48,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:21:48" (3/3) ... [2018-09-18 11:21:48,468 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label22_true-unreach-call.c [2018-09-18 11:21:48,478 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:21:48,492 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:21:48,548 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:21:48,549 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:21:48,549 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:21:48,549 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:21:48,550 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:21:48,550 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:21:48,550 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:21:48,550 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:21:48,550 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:21:48,580 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-09-18 11:21:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-18 11:21:48,590 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:21:48,592 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] [2018-09-18 11:21:48,593 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:21:48,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1190540220, now seen corresponding path program 1 times [2018-09-18 11:21:48,602 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:21:48,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:48,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:48,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:48,649 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:21:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:49,157 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:21:49,193 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 11:21:49,196 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:21:49,196 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:21:49,196 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:21:49,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:21:49,219 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:21:49,220 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:21:49,223 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-09-18 11:21:51,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:21:51,346 INFO L93 Difference]: Finished difference Result 790 states and 1382 transitions. [2018-09-18 11:21:51,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:21:51,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2018-09-18 11:21:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:21:51,372 INFO L225 Difference]: With dead ends: 790 [2018-09-18 11:21:51,372 INFO L226 Difference]: Without dead ends: 495 [2018-09-18 11:21:51,381 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:21:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-09-18 11:21:51,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 488. [2018-09-18 11:21:51,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-09-18 11:21:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 849 transitions. [2018-09-18 11:21:51,479 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 849 transitions. Word has length 62 [2018-09-18 11:21:51,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:21:51,480 INFO L480 AbstractCegarLoop]: Abstraction has 488 states and 849 transitions. [2018-09-18 11:21:51,480 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:21:51,480 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 849 transitions. [2018-09-18 11:21:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-09-18 11:21:51,489 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:21:51,489 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] [2018-09-18 11:21:51,490 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:21:51,490 INFO L82 PathProgramCache]: Analyzing trace with hash -424874524, now seen corresponding path program 1 times [2018-09-18 11:21:51,490 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:21:51,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:51,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:51,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:51,492 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:21:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:52,001 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:21:52,001 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:21:52,002 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:21:52,002 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:21:52,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:21:52,006 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:21:52,006 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:21:52,007 INFO L87 Difference]: Start difference. First operand 488 states and 849 transitions. Second operand 5 states. [2018-09-18 11:21:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:21:57,786 INFO L93 Difference]: Finished difference Result 1731 states and 3162 transitions. [2018-09-18 11:21:57,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:21:57,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2018-09-18 11:21:57,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:21:57,801 INFO L225 Difference]: With dead ends: 1731 [2018-09-18 11:21:57,801 INFO L226 Difference]: Without dead ends: 1249 [2018-09-18 11:21:57,806 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:21:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2018-09-18 11:21:57,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1032. [2018-09-18 11:21:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-09-18 11:21:57,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1658 transitions. [2018-09-18 11:21:57,886 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1658 transitions. Word has length 138 [2018-09-18 11:21:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:21:57,887 INFO L480 AbstractCegarLoop]: Abstraction has 1032 states and 1658 transitions. [2018-09-18 11:21:57,887 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:21:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1658 transitions. [2018-09-18 11:21:57,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-09-18 11:21:57,898 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:21:57,898 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] [2018-09-18 11:21:57,898 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:21:57,902 INFO L82 PathProgramCache]: Analyzing trace with hash 291958583, now seen corresponding path program 1 times [2018-09-18 11:21:57,902 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:21:57,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:57,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:21:57,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:21:57,904 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:21:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:21:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:21:58,144 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:21:58,144 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:21:58,144 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:21:58,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:21:58,145 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:21:58,145 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:21:58,146 INFO L87 Difference]: Start difference. First operand 1032 states and 1658 transitions. Second operand 5 states. [2018-09-18 11:22:02,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:02,714 INFO L93 Difference]: Finished difference Result 3667 states and 6091 transitions. [2018-09-18 11:22:02,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:22:02,724 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-09-18 11:22:02,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:02,742 INFO L225 Difference]: With dead ends: 3667 [2018-09-18 11:22:02,743 INFO L226 Difference]: Without dead ends: 2641 [2018-09-18 11:22:02,750 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:22:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2018-09-18 11:22:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2604. [2018-09-18 11:22:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2604 states. [2018-09-18 11:22:02,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 3730 transitions. [2018-09-18 11:22:02,839 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 3730 transitions. Word has length 149 [2018-09-18 11:22:02,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:02,840 INFO L480 AbstractCegarLoop]: Abstraction has 2604 states and 3730 transitions. [2018-09-18 11:22:02,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:22:02,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 3730 transitions. [2018-09-18 11:22:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-18 11:22:02,851 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:02,851 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] [2018-09-18 11:22:02,851 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:02,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1216572799, now seen corresponding path program 1 times [2018-09-18 11:22:02,852 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:02,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:02,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:02,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:02,853 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:03,251 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:03,251 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 11:22:03,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:03,264 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:03,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:03,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:03,561 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:03,562 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:04,130 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:22:04,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-09-18 11:22:04,131 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:04,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:22:04,133 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:22:04,133 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:22:04,133 INFO L87 Difference]: Start difference. First operand 2604 states and 3730 transitions. Second operand 3 states. [2018-09-18 11:22:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:07,356 INFO L93 Difference]: Finished difference Result 5998 states and 8837 transitions. [2018-09-18 11:22:07,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:22:07,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2018-09-18 11:22:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:07,374 INFO L225 Difference]: With dead ends: 5998 [2018-09-18 11:22:07,375 INFO L226 Difference]: Without dead ends: 3400 [2018-09-18 11:22:07,385 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 388 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:22:07,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2018-09-18 11:22:07,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3204. [2018-09-18 11:22:07,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3204 states. [2018-09-18 11:22:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3204 states to 3204 states and 4561 transitions. [2018-09-18 11:22:07,470 INFO L78 Accepts]: Start accepts. Automaton has 3204 states and 4561 transitions. Word has length 194 [2018-09-18 11:22:07,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:07,471 INFO L480 AbstractCegarLoop]: Abstraction has 3204 states and 4561 transitions. [2018-09-18 11:22:07,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:22:07,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3204 states and 4561 transitions. [2018-09-18 11:22:07,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-09-18 11:22:07,478 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:07,478 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, 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] [2018-09-18 11:22:07,478 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:07,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1652950013, now seen corresponding path program 1 times [2018-09-18 11:22:07,479 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:07,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:07,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:07,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:07,480 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:07,768 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:22:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 110 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:22:08,154 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:08,154 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 11:22:08,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:08,171 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:08,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 11:22:08,618 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:08,819 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:22:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 110 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:22:09,308 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:22:09,309 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-09-18 11:22:09,309 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:09,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:22:09,310 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:22:09,310 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:22:09,310 INFO L87 Difference]: Start difference. First operand 3204 states and 4561 transitions. Second operand 5 states. [2018-09-18 11:22:13,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:13,163 INFO L93 Difference]: Finished difference Result 10427 states and 15185 transitions. [2018-09-18 11:22:13,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:22:13,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 219 [2018-09-18 11:22:13,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:13,201 INFO L225 Difference]: With dead ends: 10427 [2018-09-18 11:22:13,202 INFO L226 Difference]: Without dead ends: 7229 [2018-09-18 11:22:13,219 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 433 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:22:13,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7229 states. [2018-09-18 11:22:13,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7229 to 7139. [2018-09-18 11:22:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7139 states. [2018-09-18 11:22:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7139 states to 7139 states and 9909 transitions. [2018-09-18 11:22:13,382 INFO L78 Accepts]: Start accepts. Automaton has 7139 states and 9909 transitions. Word has length 219 [2018-09-18 11:22:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:13,383 INFO L480 AbstractCegarLoop]: Abstraction has 7139 states and 9909 transitions. [2018-09-18 11:22:13,383 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:22:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 7139 states and 9909 transitions. [2018-09-18 11:22:13,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-09-18 11:22:13,396 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:13,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:22:13,397 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:13,397 INFO L82 PathProgramCache]: Analyzing trace with hash -197787496, now seen corresponding path program 1 times [2018-09-18 11:22:13,397 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:13,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:13,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:13,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:13,398 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:13,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:13,621 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:22:13,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:13,632 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:13,713 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:22:13,788 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:14,019 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:22:14,039 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:22:14,040 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 7 [2018-09-18 11:22:14,040 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:14,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:22:14,041 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:22:14,041 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:22:14,041 INFO L87 Difference]: Start difference. First operand 7139 states and 9909 transitions. Second operand 3 states. [2018-09-18 11:22:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:15,574 INFO L93 Difference]: Finished difference Result 18519 states and 26358 transitions. [2018-09-18 11:22:15,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:22:15,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2018-09-18 11:22:15,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:15,621 INFO L225 Difference]: With dead ends: 18519 [2018-09-18 11:22:15,622 INFO L226 Difference]: Without dead ends: 11386 [2018-09-18 11:22:15,662 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 439 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-09-18 11:22:15,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11386 states. [2018-09-18 11:22:15,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11386 to 11256. [2018-09-18 11:22:15,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11256 states. [2018-09-18 11:22:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11256 states to 11256 states and 15191 transitions. [2018-09-18 11:22:15,901 INFO L78 Accepts]: Start accepts. Automaton has 11256 states and 15191 transitions. Word has length 220 [2018-09-18 11:22:15,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:15,902 INFO L480 AbstractCegarLoop]: Abstraction has 11256 states and 15191 transitions. [2018-09-18 11:22:15,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:22:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 11256 states and 15191 transitions. [2018-09-18 11:22:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-09-18 11:22:15,921 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:15,922 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, 1, 1, 1, 1, 1] [2018-09-18 11:22:15,922 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:15,922 INFO L82 PathProgramCache]: Analyzing trace with hash -59544233, now seen corresponding path program 1 times [2018-09-18 11:22:15,922 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:15,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:15,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:15,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:15,924 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 11:22:16,278 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:22:16,278 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:22:16,278 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:22:16,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:22:16,279 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:22:16,279 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:22:16,280 INFO L87 Difference]: Start difference. First operand 11256 states and 15191 transitions. Second operand 4 states. [2018-09-18 11:22:18,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:18,352 INFO L93 Difference]: Finished difference Result 24486 states and 34686 transitions. [2018-09-18 11:22:18,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:22:18,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2018-09-18 11:22:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:18,409 INFO L225 Difference]: With dead ends: 24486 [2018-09-18 11:22:18,409 INFO L226 Difference]: Without dead ends: 13236 [2018-09-18 11:22:18,448 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 11:22:18,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13236 states. [2018-09-18 11:22:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13236 to 13224. [2018-09-18 11:22:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13224 states. [2018-09-18 11:22:18,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13224 states to 13224 states and 17596 transitions. [2018-09-18 11:22:18,708 INFO L78 Accepts]: Start accepts. Automaton has 13224 states and 17596 transitions. Word has length 225 [2018-09-18 11:22:18,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:18,708 INFO L480 AbstractCegarLoop]: Abstraction has 13224 states and 17596 transitions. [2018-09-18 11:22:18,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:22:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 13224 states and 17596 transitions. [2018-09-18 11:22:18,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-09-18 11:22:18,741 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:18,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:22:18,742 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:18,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1417788410, now seen corresponding path program 1 times [2018-09-18 11:22:18,742 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:18,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:18,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:18,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:18,743 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:19,178 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:19,178 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 11:22:19,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:19,185 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:19,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:19,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:19,929 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2018-09-18 11:22:20,359 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-09-18 11:22:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:20,520 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:21,078 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:21,078 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:22:21,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:21,096 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:21,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:21,402 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 111 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:21,402 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:21,574 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:22:21,574 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 8, 7, 5] total 19 [2018-09-18 11:22:21,574 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:22:21,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-18 11:22:21,575 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-18 11:22:21,575 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2018-09-18 11:22:21,575 INFO L87 Difference]: Start difference. First operand 13224 states and 17596 transitions. Second operand 11 states. [2018-09-18 11:22:25,739 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 12 [2018-09-18 11:22:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:31,857 INFO L93 Difference]: Finished difference Result 29638 states and 40858 transitions. [2018-09-18 11:22:31,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-09-18 11:22:31,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 260 [2018-09-18 11:22:31,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:31,919 INFO L225 Difference]: With dead ends: 29638 [2018-09-18 11:22:31,919 INFO L226 Difference]: Without dead ends: 14667 [2018-09-18 11:22:31,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1037 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=597, Invalid=1953, Unknown=0, NotChecked=0, Total=2550 [2018-09-18 11:22:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14667 states. [2018-09-18 11:22:32,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14667 to 13941. [2018-09-18 11:22:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13941 states. [2018-09-18 11:22:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13941 states to 13941 states and 16808 transitions. [2018-09-18 11:22:32,238 INFO L78 Accepts]: Start accepts. Automaton has 13941 states and 16808 transitions. Word has length 260 [2018-09-18 11:22:32,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:32,238 INFO L480 AbstractCegarLoop]: Abstraction has 13941 states and 16808 transitions. [2018-09-18 11:22:32,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-18 11:22:32,239 INFO L276 IsEmpty]: Start isEmpty. Operand 13941 states and 16808 transitions. [2018-09-18 11:22:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-09-18 11:22:32,290 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:32,291 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:22:32,291 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:32,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1400023186, now seen corresponding path program 1 times [2018-09-18 11:22:32,291 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:32,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:32,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:32,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:32,294 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-09-18 11:22:33,293 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:33,293 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 11:22:33,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:33,309 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:33,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:34,063 WARN L1001 $PredicateComparison]: unable to prove that (or (exists ((v_~a29~0_569 Int)) (let ((.cse0 (mod v_~a29~0_569 15))) (and (< v_~a29~0_569 0) (<= |c_old(~a29~0)| v_~a29~0_569) (<= c_~a29~0 (+ .cse0 245)) (not (= .cse0 0))))) (exists ((v_prenex_2 Int)) (let ((.cse1 (mod v_prenex_2 15))) (and (<= |c_old(~a29~0)| v_prenex_2) (<= c_~a29~0 (+ .cse1 260)) (= .cse1 0)))) (exists ((v_prenex_1 Int)) (and (<= |c_old(~a29~0)| v_prenex_1) (<= c_~a29~0 (+ (mod v_prenex_1 15) 260)) (<= 0 v_prenex_1)))) is different from true [2018-09-18 11:22:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 111 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-09-18 11:22:34,369 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:34,660 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:34,681 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:34,681 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:22:34,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:34,697 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:34,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 111 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:35,091 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 238 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:22:35,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:22:35,450 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5, 8, 5] total 16 [2018-09-18 11:22:35,451 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:22:35,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-18 11:22:35,452 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-18 11:22:35,452 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=154, Unknown=1, NotChecked=26, Total=240 [2018-09-18 11:22:35,453 INFO L87 Difference]: Start difference. First operand 13941 states and 16808 transitions. Second operand 11 states. [2018-09-18 11:22:42,846 WARN L178 SmtUtils]: Spent 4.57 s on a formula simplification. DAG size of input: 38 DAG size of output: 16 [2018-09-18 11:22:51,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:51,064 INFO L93 Difference]: Finished difference Result 42253 states and 56183 transitions. [2018-09-18 11:22:51,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-09-18 11:22:51,064 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 374 [2018-09-18 11:22:51,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:22:51,197 INFO L225 Difference]: With dead ends: 42253 [2018-09-18 11:22:51,198 INFO L226 Difference]: Without dead ends: 28507 [2018-09-18 11:22:51,244 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1518 GetRequests, 1483 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=192, Invalid=619, Unknown=5, NotChecked=54, Total=870 [2018-09-18 11:22:51,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28507 states. [2018-09-18 11:22:51,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28507 to 27830. [2018-09-18 11:22:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27830 states. [2018-09-18 11:22:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27830 states to 27830 states and 35035 transitions. [2018-09-18 11:22:51,842 INFO L78 Accepts]: Start accepts. Automaton has 27830 states and 35035 transitions. Word has length 374 [2018-09-18 11:22:51,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:22:51,843 INFO L480 AbstractCegarLoop]: Abstraction has 27830 states and 35035 transitions. [2018-09-18 11:22:51,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-18 11:22:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 27830 states and 35035 transitions. [2018-09-18 11:22:51,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-09-18 11:22:51,963 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:22:51,963 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:22:51,963 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:22:51,964 INFO L82 PathProgramCache]: Analyzing trace with hash 356616465, now seen corresponding path program 1 times [2018-09-18 11:22:51,964 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:22:51,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:51,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:51,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:22:51,965 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:22:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 269 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-09-18 11:22:52,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:52,721 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 [2018-09-18 11:22:52,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:52,742 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:52,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:53,199 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 439 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 11:22:53,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 269 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-09-18 11:22:53,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:22:53,467 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 [2018-09-18 11:22:53,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:22:53,656 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:22:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:22:53,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:22:54,255 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 439 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-09-18 11:22:54,255 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:22:54,605 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 269 proven. 100 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-09-18 11:22:54,608 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:22:54,608 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:22:54,608 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:22:54,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:22:54,609 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:22:54,609 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:22:54,610 INFO L87 Difference]: Start difference. First operand 27830 states and 35035 transitions. Second operand 9 states. [2018-09-18 11:22:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:22:59,866 INFO L93 Difference]: Finished difference Result 59596 states and 87697 transitions. [2018-09-18 11:22:59,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-18 11:22:59,866 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 477 [2018-09-18 11:22:59,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:23:00,043 INFO L225 Difference]: With dead ends: 59596 [2018-09-18 11:23:00,044 INFO L226 Difference]: Without dead ends: 32154 [2018-09-18 11:23:00,169 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1930 GetRequests, 1905 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2018-09-18 11:23:00,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32154 states. [2018-09-18 11:23:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32154 to 31197. [2018-09-18 11:23:01,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31197 states. [2018-09-18 11:23:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31197 states to 31197 states and 44773 transitions. [2018-09-18 11:23:01,274 INFO L78 Accepts]: Start accepts. Automaton has 31197 states and 44773 transitions. Word has length 477 [2018-09-18 11:23:01,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:23:01,274 INFO L480 AbstractCegarLoop]: Abstraction has 31197 states and 44773 transitions. [2018-09-18 11:23:01,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:23:01,274 INFO L276 IsEmpty]: Start isEmpty. Operand 31197 states and 44773 transitions. [2018-09-18 11:23:01,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-09-18 11:23:01,420 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:23:01,420 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:23:01,420 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:23:01,421 INFO L82 PathProgramCache]: Analyzing trace with hash 656109110, now seen corresponding path program 1 times [2018-09-18 11:23:01,421 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:23:01,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:23:01,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:01,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:23:01,422 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:23:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:23:01,932 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:23:01,932 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 [2018-09-18 11:23:01,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:01,941 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:23:02,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:02,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:23:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2018-09-18 11:23:02,894 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:23:03,240 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-18 11:23:03,374 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 38 [2018-09-18 11:23:04,082 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 165 proven. 138 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2018-09-18 11:23:04,103 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:23:04,103 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-18 11:23:04,103 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:23:04,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:23:04,104 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:23:04,104 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:23:04,105 INFO L87 Difference]: Start difference. First operand 31197 states and 44773 transitions. Second operand 5 states. [2018-09-18 11:23:06,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:23:06,725 INFO L93 Difference]: Finished difference Result 62530 states and 90097 transitions. [2018-09-18 11:23:06,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:23:06,726 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 493 [2018-09-18 11:23:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:23:06,884 INFO L225 Difference]: With dead ends: 62530 [2018-09-18 11:23:06,884 INFO L226 Difference]: Without dead ends: 31719 [2018-09-18 11:23:07,002 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 981 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2018-09-18 11:23:07,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31719 states. [2018-09-18 11:23:07,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31719 to 30863. [2018-09-18 11:23:07,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30863 states. [2018-09-18 11:23:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30863 states to 30863 states and 44458 transitions. [2018-09-18 11:23:07,760 INFO L78 Accepts]: Start accepts. Automaton has 30863 states and 44458 transitions. Word has length 493 [2018-09-18 11:23:07,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:23:07,761 INFO L480 AbstractCegarLoop]: Abstraction has 30863 states and 44458 transitions. [2018-09-18 11:23:07,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:23:07,761 INFO L276 IsEmpty]: Start isEmpty. Operand 30863 states and 44458 transitions. [2018-09-18 11:23:07,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 568 [2018-09-18 11:23:07,913 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:23:07,914 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-09-18 11:23:07,914 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:23:07,914 INFO L82 PathProgramCache]: Analyzing trace with hash 335125876, now seen corresponding path program 1 times [2018-09-18 11:23:07,914 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:23:07,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:23:07,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:07,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:23:07,915 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:23:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 489 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-18 11:23:08,477 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:23:08,477 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 [2018-09-18 11:23:08,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:08,487 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:23:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:08,968 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:23:11,433 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 437 proven. 2 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2018-09-18 11:23:11,434 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:23:11,839 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 316 proven. 174 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2018-09-18 11:23:11,861 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:23:11,861 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 [2018-09-18 11:23:11,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:11,882 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:23:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:12,264 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:23:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 489 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-18 11:23:12,466 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:23:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 489 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-09-18 11:23:13,034 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:23:13,035 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5, 6, 5] total 18 [2018-09-18 11:23:13,035 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:23:13,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-18 11:23:13,036 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-18 11:23:13,036 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=235, Unknown=1, NotChecked=0, Total=306 [2018-09-18 11:23:13,036 INFO L87 Difference]: Start difference. First operand 30863 states and 44458 transitions. Second operand 13 states. [2018-09-18 11:23:14,309 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 19 [2018-09-18 11:23:17,507 WARN L178 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 34 DAG size of output: 18 [2018-09-18 11:23:30,533 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-09-18 11:23:33,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:23:33,123 INFO L93 Difference]: Finished difference Result 72460 states and 114817 transitions. [2018-09-18 11:23:33,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-09-18 11:23:33,123 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 567 [2018-09-18 11:23:33,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:23:33,353 INFO L225 Difference]: With dead ends: 72460 [2018-09-18 11:23:33,354 INFO L226 Difference]: Without dead ends: 39420 [2018-09-18 11:23:33,624 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2324 GetRequests, 2274 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=412, Invalid=1566, Unknown=2, NotChecked=0, Total=1980 [2018-09-18 11:23:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39420 states. [2018-09-18 11:23:34,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39420 to 36993. [2018-09-18 11:23:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36993 states. [2018-09-18 11:23:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36993 states to 36993 states and 48447 transitions. [2018-09-18 11:23:34,766 INFO L78 Accepts]: Start accepts. Automaton has 36993 states and 48447 transitions. Word has length 567 [2018-09-18 11:23:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:23:34,767 INFO L480 AbstractCegarLoop]: Abstraction has 36993 states and 48447 transitions. [2018-09-18 11:23:34,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-18 11:23:34,768 INFO L276 IsEmpty]: Start isEmpty. Operand 36993 states and 48447 transitions. [2018-09-18 11:23:34,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2018-09-18 11:23:34,914 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:23:34,914 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-09-18 11:23:34,914 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:23:34,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1792372431, now seen corresponding path program 1 times [2018-09-18 11:23:34,915 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:23:34,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:23:34,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:34,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:23:34,916 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:23:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 433 proven. 100 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-09-18 11:23:35,785 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:23:35,785 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 [2018-09-18 11:23:35,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:35,794 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:23:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:35,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:23:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 717 proven. 2 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-09-18 11:23:36,274 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:23:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 433 proven. 100 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-09-18 11:23:36,527 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:23:36,527 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 [2018-09-18 11:23:36,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:36,542 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:23:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:36,928 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:23:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 717 proven. 2 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2018-09-18 11:23:37,251 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:23:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 433 proven. 100 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2018-09-18 11:23:37,786 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:23:37,787 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:23:37,787 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:23:37,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:23:37,791 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:23:37,791 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:23:37,792 INFO L87 Difference]: Start difference. First operand 36993 states and 48447 transitions. Second operand 9 states. [2018-09-18 11:23:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:23:41,920 INFO L93 Difference]: Finished difference Result 69403 states and 89031 transitions. [2018-09-18 11:23:41,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:23:41,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 594 [2018-09-18 11:23:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:23:42,008 INFO L225 Difference]: With dead ends: 69403 [2018-09-18 11:23:42,008 INFO L226 Difference]: Without dead ends: 31256 [2018-09-18 11:23:42,109 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2394 GetRequests, 2371 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:23:42,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31256 states. [2018-09-18 11:23:42,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31256 to 30723. [2018-09-18 11:23:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30723 states. [2018-09-18 11:23:42,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30723 states to 30723 states and 35658 transitions. [2018-09-18 11:23:42,620 INFO L78 Accepts]: Start accepts. Automaton has 30723 states and 35658 transitions. Word has length 594 [2018-09-18 11:23:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:23:42,621 INFO L480 AbstractCegarLoop]: Abstraction has 30723 states and 35658 transitions. [2018-09-18 11:23:42,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:23:42,621 INFO L276 IsEmpty]: Start isEmpty. Operand 30723 states and 35658 transitions. [2018-09-18 11:23:42,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2018-09-18 11:23:42,689 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:23:42,689 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, 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, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:23:42,690 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:23:42,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1930055322, now seen corresponding path program 1 times [2018-09-18 11:23:42,690 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:23:42,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:23:42,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:42,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:23:42,693 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:23:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 291 proven. 572 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2018-09-18 11:23:43,875 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:23:43,875 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:23:43,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:23:43,883 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:23:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:23:44,084 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:23:52,201 WARN L178 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 40 [2018-09-18 11:23:58,270 WARN L178 SmtUtils]: Spent 2.02 s on a formula simplification. DAG size of input: 40 DAG size of output: 21 [2018-09-18 11:24:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 805 proven. 2 refuted. 2 times theorem prover too weak. 487 trivial. 0 not checked. [2018-09-18 11:24:00,778 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:24:05,030 WARN L178 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 42 [2018-09-18 11:24:28,875 WARN L178 SmtUtils]: Spent 15.05 s on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-09-18 11:24:28,883 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:24:29,714 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:24:34,183 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:24:36,565 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:24:39,432 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:24:42,179 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:24:46,635 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:24:48,958 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:24:53,364 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:24:57,612 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:02,031 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:07,723 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:10,877 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:17,196 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:21,621 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:27,153 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:33,464 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:39,709 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,639 WARN L178 SmtUtils]: Spent 2.69 s on a formula simplification that was a NOOP. DAG size: 95 [2018-09-18 11:25:46,645 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,654 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,663 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,676 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,687 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,700 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,712 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,725 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,738 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,750 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,764 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,777 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,793 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,807 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,821 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,835 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,849 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,862 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,876 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,890 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,905 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,919 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,932 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,946 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,958 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,971 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,984 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:46,997 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,010 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,027 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,040 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,053 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,065 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,078 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,091 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,103 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,116 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,128 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,140 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,154 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,166 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,180 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,192 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,205 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,218 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,230 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,242 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,255 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,268 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,281 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,296 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,308 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,320 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,332 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,345 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,357 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,371 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,383 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,395 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,409 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,422 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 30 [2018-09-18 11:25:47,471 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 36 Received shutdown request... [2018-09-18 11:25:51,825 WARN L186 SmtUtils]: Removed 2 from assertion stack [2018-09-18 11:25:51,825 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-09-18 11:25:52,026 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:25:52,027 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:25:52,031 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:25:52,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:25:52 BoogieIcfgContainer [2018-09-18 11:25:52,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:25:52,033 INFO L168 Benchmark]: Toolchain (without parser) took 249437.74 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 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 1.2 GB. Max. memory is 7.1 GB. [2018-09-18 11:25:52,034 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:25:52,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 949.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-09-18 11:25:52,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 158.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:25:52,036 INFO L168 Benchmark]: Boogie Preprocessor took 398.99 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -950.1 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. [2018-09-18 11:25:52,036 INFO L168 Benchmark]: RCFGBuilder took 4352.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 182.6 MB). Peak memory consumption was 182.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:25:52,037 INFO L168 Benchmark]: TraceAbstraction took 243571.95 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -735.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-09-18 11:25:52,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 949.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 158.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 398.99 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -950.1 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4352.20 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 182.6 MB). Peak memory consumption was 182.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243571.95 ms. Allocated memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -735.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 171). Cancelled while BasicCegarLoop was analyzing trace of length 688 with TraceHistMax 6, while TraceCheckSpWp was constructing backward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 83. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 243.4s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 83.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2654 SDtfs, 17712 SDslu, 2820 SDs, 0 SdLazy, 28222 SolverSat, 6756 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 53.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11564 GetRequests, 11322 SyntacticMatches, 36 SemanticMatches, 206 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 26.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36993occurred in iteration=12, 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: 5.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 6865 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 19.3s InterpolantComputationTime, 9642 NumberOfCodeBlocks, 9642 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 15271 ConstructedInterpolants, 10 QuantifiedInterpolants, 17173454 SizeOfPredicates, 28 NumberOfNonLiveVariables, 8914 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 41 InterpolantComputations, 10 PerfectInterpolantSequences, 13832/15255 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/Problem11_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-25-52-060.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label22_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-25-52-060.csv Completed graceful shutdown