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/Problem13_label00_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:37:35,587 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:37:35,589 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:37:35,603 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:37:35,604 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:37:35,605 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:37:35,607 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:37:35,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:37:35,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:37:35,614 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:37:35,615 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:37:35,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:37:35,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:37:35,617 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:37:35,618 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:37:35,619 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:37:35,620 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:37:35,621 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:37:35,623 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:37:35,625 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:37:35,626 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:37:35,627 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:37:35,630 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:37:35,630 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:37:35,630 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:37:35,631 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:37:35,632 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:37:35,633 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:37:35,634 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:37:35,635 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:37:35,636 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:37:35,636 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:37:35,636 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:37:35,637 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:37:35,638 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:37:35,638 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:37:35,639 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 11:37:35,660 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:37:35,660 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:37:35,662 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:37:35,663 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:37:35,663 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:37:35,663 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:37:35,663 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:37:35,663 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:37:35,664 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:37:35,664 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:37:35,664 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:37:35,664 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:37:35,667 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:37:35,667 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:37:35,667 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:37:35,668 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:37:35,668 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:37:35,668 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:37:35,668 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:37:35,668 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:37:35,669 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:37:35,669 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:37:35,669 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:37:35,669 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:37:35,671 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:37:35,671 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:37:35,672 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:37:35,672 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:37:35,672 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:37:35,672 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:37:35,672 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:37:35,673 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:37:35,673 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:37:35,673 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:37:35,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:37:35,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:37:35,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:37:35,754 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:37:35,754 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:37:35,755 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-09-18 11:37:36,129 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf007a7a1/fc9060c2ff9b4bb0a036ce35679276c2/FLAG9f7851d2d [2018-09-18 11:37:36,681 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:37:36,682 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label00_true-unreach-call.c [2018-09-18 11:37:36,714 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf007a7a1/fc9060c2ff9b4bb0a036ce35679276c2/FLAG9f7851d2d [2018-09-18 11:37:36,730 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf007a7a1/fc9060c2ff9b4bb0a036ce35679276c2 [2018-09-18 11:37:36,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:37:36,746 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:37:36,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:37:36,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:37:36,754 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:37:36,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:37:36" (1/1) ... [2018-09-18 11:37:36,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612a6518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:36, skipping insertion in model container [2018-09-18 11:37:36,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:37:36" (1/1) ... [2018-09-18 11:37:36,779 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:37:38,304 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:37:38,325 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:37:39,122 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:37:39,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39 WrapperNode [2018-09-18 11:37:39,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:37:39,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:37:39,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:37:39,523 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:37:39,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (1/1) ... [2018-09-18 11:37:39,667 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (1/1) ... [2018-09-18 11:37:39,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:37:39,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:37:39,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:37:39,863 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:37:40,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (1/1) ... [2018-09-18 11:37:40,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (1/1) ... [2018-09-18 11:37:40,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (1/1) ... [2018-09-18 11:37:40,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (1/1) ... [2018-09-18 11:37:40,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (1/1) ... [2018-09-18 11:37:40,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (1/1) ... [2018-09-18 11:37:41,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (1/1) ... [2018-09-18 11:37:41,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:37:41,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:37:41,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:37:41,145 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:37:41,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (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 11:37:41,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:37:41,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:37:41,228 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:37:41,228 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:37:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:37:41,229 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:37:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:37:41,229 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:37:41,229 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:37:41,230 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:37:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:37:41,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:37:41,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:37:41,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:37:52,026 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:37:52,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:37:52 BoogieIcfgContainer [2018-09-18 11:37:52,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:37:52,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:37:52,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:37:52,031 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:37:52,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:37:36" (1/3) ... [2018-09-18 11:37:52,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e2147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:37:52, skipping insertion in model container [2018-09-18 11:37:52,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:37:39" (2/3) ... [2018-09-18 11:37:52,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e2147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:37:52, skipping insertion in model container [2018-09-18 11:37:52,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:37:52" (3/3) ... [2018-09-18 11:37:52,035 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label00_true-unreach-call.c [2018-09-18 11:37:52,045 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:37:52,055 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:37:52,120 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:37:52,121 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:37:52,122 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:37:52,122 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:37:52,122 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:37:52,122 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:37:52,122 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:37:52,122 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:37:52,122 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:37:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-09-18 11:37:52,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-09-18 11:37:52,174 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:37:52,176 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] [2018-09-18 11:37:52,177 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:37:52,182 INFO L82 PathProgramCache]: Analyzing trace with hash -920036068, now seen corresponding path program 1 times [2018-09-18 11:37:52,184 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:37:52,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:52,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:37:52,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:37:52,236 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:37:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:37:52,685 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-18 11:37:52,713 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 11:37:52,715 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:37:52,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-18 11:37:52,716 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:37:52,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-18 11:37:52,754 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-18 11:37:52,755 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:37:52,758 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-09-18 11:38:08,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:08,385 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-09-18 11:38:08,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 11:38:08,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2018-09-18 11:38:08,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:08,442 INFO L225 Difference]: With dead ends: 3968 [2018-09-18 11:38:08,443 INFO L226 Difference]: Without dead ends: 2842 [2018-09-18 11:38:08,458 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:38:08,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-09-18 11:38:08,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-09-18 11:38:08,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-09-18 11:38:08,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-09-18 11:38:08,631 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 44 [2018-09-18 11:38:08,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:08,632 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-09-18 11:38:08,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-18 11:38:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-09-18 11:38:08,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-09-18 11:38:08,643 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:08,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:38:08,644 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:08,645 INFO L82 PathProgramCache]: Analyzing trace with hash 673844312, now seen corresponding path program 1 times [2018-09-18 11:38:08,645 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:08,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:08,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:08,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:08,646 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:08,935 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:38:08,935 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:38:08,936 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:38:08,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:38:08,938 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:38:08,938 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:38:08,938 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-09-18 11:38:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:24,855 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-09-18 11:38:24,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:38:24,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-09-18 11:38:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:24,882 INFO L225 Difference]: With dead ends: 5673 [2018-09-18 11:38:24,882 INFO L226 Difference]: Without dead ends: 3698 [2018-09-18 11:38:24,890 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:38:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-09-18 11:38:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-09-18 11:38:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-09-18 11:38:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-09-18 11:38:25,001 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 114 [2018-09-18 11:38:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:25,002 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-09-18 11:38:25,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:38:25,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-09-18 11:38:25,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-09-18 11:38:25,006 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:25,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:38:25,007 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:25,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1072616972, now seen corresponding path program 1 times [2018-09-18 11:38:25,008 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:25,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:25,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:25,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:25,009 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:25,273 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:25,274 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:38:25,274 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:38:25,274 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:38:25,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:38:25,275 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:38:25,275 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:38:25,275 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-09-18 11:38:42,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:38:42,802 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-09-18 11:38:42,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:38:42,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-09-18 11:38:42,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:38:42,844 INFO L225 Difference]: With dead ends: 10963 [2018-09-18 11:38:42,845 INFO L226 Difference]: Without dead ends: 7282 [2018-09-18 11:38:42,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:38:42,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-09-18 11:38:43,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-09-18 11:38:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-09-18 11:38:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-09-18 11:38:43,034 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 116 [2018-09-18 11:38:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:38:43,034 INFO L480 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-09-18 11:38:43,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:38:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-09-18 11:38:43,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-09-18 11:38:43,038 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:38:43,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:38:43,039 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:38:43,039 INFO L82 PathProgramCache]: Analyzing trace with hash -2080422020, now seen corresponding path program 1 times [2018-09-18 11:38:43,039 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:38:43,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:43,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:38:43,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:38:43,041 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:38:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:38:43,425 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:38:43,426 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:38:43,426 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:38:43,426 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:38:43,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:38:43,427 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:38:43,427 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:38:43,427 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 6 states. [2018-09-18 11:39:11,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:39:11,115 INFO L93 Difference]: Finished difference Result 18116 states and 26150 transitions. [2018-09-18 11:39:11,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 11:39:11,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-09-18 11:39:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:39:11,175 INFO L225 Difference]: With dead ends: 18116 [2018-09-18 11:39:11,176 INFO L226 Difference]: Without dead ends: 10947 [2018-09-18 11:39:11,212 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:39:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10947 states. [2018-09-18 11:39:11,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10947 to 10597. [2018-09-18 11:39:11,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10597 states. [2018-09-18 11:39:11,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10597 states to 10597 states and 14744 transitions. [2018-09-18 11:39:11,482 INFO L78 Accepts]: Start accepts. Automaton has 10597 states and 14744 transitions. Word has length 160 [2018-09-18 11:39:11,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:39:11,483 INFO L480 AbstractCegarLoop]: Abstraction has 10597 states and 14744 transitions. [2018-09-18 11:39:11,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:39:11,483 INFO L276 IsEmpty]: Start isEmpty. Operand 10597 states and 14744 transitions. [2018-09-18 11:39:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-09-18 11:39:11,487 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:39:11,488 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:39:11,488 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:39:11,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2003986425, now seen corresponding path program 1 times [2018-09-18 11:39:11,489 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:39:11,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:11,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:11,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:11,490 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:39:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:39:11,787 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:39:11,787 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 11:39:11,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:11,797 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:39:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:11,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:39:12,160 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:39:12,160 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:39:13,113 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:39:13,148 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:39:13,148 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2018-09-18 11:39:13,148 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:39:13,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:39:13,149 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:39:13,149 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:39:13,150 INFO L87 Difference]: Start difference. First operand 10597 states and 14744 transitions. Second operand 6 states. [2018-09-18 11:39:39,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:39:39,296 INFO L93 Difference]: Finished difference Result 38967 states and 58283 transitions. [2018-09-18 11:39:39,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:39:39,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-09-18 11:39:39,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:39:39,417 INFO L225 Difference]: With dead ends: 38967 [2018-09-18 11:39:39,417 INFO L226 Difference]: Without dead ends: 29185 [2018-09-18 11:39:39,482 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:39:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29185 states. [2018-09-18 11:39:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29185 to 28974. [2018-09-18 11:39:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28974 states. [2018-09-18 11:39:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28974 states to 28974 states and 41264 transitions. [2018-09-18 11:39:40,237 INFO L78 Accepts]: Start accepts. Automaton has 28974 states and 41264 transitions. Word has length 174 [2018-09-18 11:39:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:39:40,238 INFO L480 AbstractCegarLoop]: Abstraction has 28974 states and 41264 transitions. [2018-09-18 11:39:40,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:39:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 28974 states and 41264 transitions. [2018-09-18 11:39:40,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-09-18 11:39:40,244 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:39:40,244 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:39:40,245 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:39:40,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1640504864, now seen corresponding path program 1 times [2018-09-18 11:39:40,245 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:39:40,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:40,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:40,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:40,247 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:39:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:40,563 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:39:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 74 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:39:40,969 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:39:40,969 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 11:39:40,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:40,987 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:39:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:41,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:39:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-09-18 11:39:41,563 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:39:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 74 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:39:42,588 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:39:42,588 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-09-18 11:39:42,589 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:39:42,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:39:42,590 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:39:42,590 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:39:42,591 INFO L87 Difference]: Start difference. First operand 28974 states and 41264 transitions. Second operand 5 states. [2018-09-18 11:39:57,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:39:57,186 INFO L93 Difference]: Finished difference Result 94020 states and 142130 transitions. [2018-09-18 11:39:57,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:39:57,190 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 194 [2018-09-18 11:39:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:39:57,466 INFO L225 Difference]: With dead ends: 94020 [2018-09-18 11:39:57,466 INFO L226 Difference]: Without dead ends: 65052 [2018-09-18 11:39:57,634 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 383 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-09-18 11:39:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65052 states. [2018-09-18 11:39:58,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65052 to 64701. [2018-09-18 11:39:58,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64701 states. [2018-09-18 11:39:58,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64701 states to 64701 states and 86448 transitions. [2018-09-18 11:39:58,980 INFO L78 Accepts]: Start accepts. Automaton has 64701 states and 86448 transitions. Word has length 194 [2018-09-18 11:39:58,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:39:58,981 INFO L480 AbstractCegarLoop]: Abstraction has 64701 states and 86448 transitions. [2018-09-18 11:39:58,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:39:58,981 INFO L276 IsEmpty]: Start isEmpty. Operand 64701 states and 86448 transitions. [2018-09-18 11:39:58,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-09-18 11:39:58,991 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:39:58,991 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:39:58,991 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:39:58,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1098316848, now seen corresponding path program 1 times [2018-09-18 11:39:58,992 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:39:58,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:58,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:58,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:39:58,993 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:39:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:59,693 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:39:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:39:59,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:39:59,853 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 11:39:59,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:39:59,862 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:39:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:39:59,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:39:59,997 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:39:59,997 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:40:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:40:00,312 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-18 11:40:00,312 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-09-18 11:40:00,312 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:40:00,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:40:00,313 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:40:00,314 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:40:00,314 INFO L87 Difference]: Start difference. First operand 64701 states and 86448 transitions. Second operand 3 states. [2018-09-18 11:40:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:40:07,139 INFO L93 Difference]: Finished difference Result 136670 states and 184289 transitions. [2018-09-18 11:40:07,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:40:07,140 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2018-09-18 11:40:07,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:40:07,372 INFO L225 Difference]: With dead ends: 136670 [2018-09-18 11:40:07,372 INFO L226 Difference]: Without dead ends: 72780 [2018-09-18 11:40:07,540 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 516 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:40:07,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72780 states. [2018-09-18 11:40:08,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72780 to 71959. [2018-09-18 11:40:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71959 states. [2018-09-18 11:40:09,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71959 states to 71959 states and 90362 transitions. [2018-09-18 11:40:09,127 INFO L78 Accepts]: Start accepts. Automaton has 71959 states and 90362 transitions. Word has length 259 [2018-09-18 11:40:09,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:40:09,128 INFO L480 AbstractCegarLoop]: Abstraction has 71959 states and 90362 transitions. [2018-09-18 11:40:09,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:40:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 71959 states and 90362 transitions. [2018-09-18 11:40:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-09-18 11:40:09,140 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:40:09,140 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:40:09,140 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:40:09,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2015051743, now seen corresponding path program 1 times [2018-09-18 11:40:09,141 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:40:09,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:09,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:09,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:09,142 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:40:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:40:09,479 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:40:09,479 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 11:40:09,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:09,486 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:40:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:09,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:40:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:40:09,834 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:40:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:40:10,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:40:10,004 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 11:40:10,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:10,022 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:40:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:10,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:40:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 11:40:10,987 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:40:11,601 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-09-18 11:40:11,604 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 4 imperfect interpolant sequences. [2018-09-18 11:40:11,604 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5, 5] total 16 [2018-09-18 11:40:11,604 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:40:11,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:40:11,605 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:40:11,605 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:40:11,605 INFO L87 Difference]: Start difference. First operand 71959 states and 90362 transitions. Second operand 5 states. [2018-09-18 11:40:21,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:40:21,840 INFO L93 Difference]: Finished difference Result 143118 states and 180040 transitions. [2018-09-18 11:40:21,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 11:40:21,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2018-09-18 11:40:21,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:40:22,008 INFO L225 Difference]: With dead ends: 143118 [2018-09-18 11:40:22,008 INFO L226 Difference]: Without dead ends: 71970 [2018-09-18 11:40:22,101 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1149 GetRequests, 1133 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-09-18 11:40:22,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71970 states. [2018-09-18 11:40:23,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71970 to 69481. [2018-09-18 11:40:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69481 states. [2018-09-18 11:40:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69481 states to 69481 states and 83857 transitions. [2018-09-18 11:40:23,199 INFO L78 Accepts]: Start accepts. Automaton has 69481 states and 83857 transitions. Word has length 286 [2018-09-18 11:40:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:40:23,200 INFO L480 AbstractCegarLoop]: Abstraction has 69481 states and 83857 transitions. [2018-09-18 11:40:23,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:40:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 69481 states and 83857 transitions. [2018-09-18 11:40:23,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-09-18 11:40:23,219 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:40:23,220 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:23,220 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:40:23,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1853254764, now seen corresponding path program 1 times [2018-09-18 11:40:23,221 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:40:23,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:23,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:23,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:40:23,222 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:40:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:23,805 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-09-18 11:40:24,104 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-18 11:40:24,961 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 208 proven. 69 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-09-18 11:40:24,962 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:40:24,962 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 11:40:24,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:24,977 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:40:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:25,088 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:40:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 252 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:40:25,446 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:40:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 252 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:40:25,609 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:40:25,609 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 11:40:25,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:40:25,625 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:40:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:40:25,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:40:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 252 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:40:26,074 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:40:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 252 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:40:26,288 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:40:26,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5, 5, 5] total 16 [2018-09-18 11:40:26,289 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:40:26,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 11:40:26,289 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 11:40:26,290 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:40:26,290 INFO L87 Difference]: Start difference. First operand 69481 states and 83857 transitions. Second operand 10 states. [2018-09-18 11:41:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:41:01,624 INFO L93 Difference]: Finished difference Result 240391 states and 375813 transitions. [2018-09-18 11:41:01,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-09-18 11:41:01,625 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 329 [2018-09-18 11:41:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:41:02,607 INFO L225 Difference]: With dead ends: 240391 [2018-09-18 11:41:02,607 INFO L226 Difference]: Without dead ends: 170916 [2018-09-18 11:41:04,071 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1388 GetRequests, 1335 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=613, Invalid=2143, Unknown=0, NotChecked=0, Total=2756 [2018-09-18 11:41:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170916 states. [2018-09-18 11:41:07,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170916 to 159783. [2018-09-18 11:41:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159783 states. [2018-09-18 11:41:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159783 states to 159783 states and 187229 transitions. [2018-09-18 11:41:07,599 INFO L78 Accepts]: Start accepts. Automaton has 159783 states and 187229 transitions. Word has length 329 [2018-09-18 11:41:07,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:41:07,599 INFO L480 AbstractCegarLoop]: Abstraction has 159783 states and 187229 transitions. [2018-09-18 11:41:07,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 11:41:07,600 INFO L276 IsEmpty]: Start isEmpty. Operand 159783 states and 187229 transitions. [2018-09-18 11:41:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2018-09-18 11:41:07,636 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:41:07,636 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:41:07,636 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:41:07,637 INFO L82 PathProgramCache]: Analyzing trace with hash 797740025, now seen corresponding path program 1 times [2018-09-18 11:41:07,637 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:41:07,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:07,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:07,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:07,638 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:41:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:08,850 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-09-18 11:41:08,850 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:41:08,850 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 11:41:08,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:08,861 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:41:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:08,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:41:09,116 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 354 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-09-18 11:41:09,116 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:41:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-09-18 11:41:09,249 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:41:09,250 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4 [2018-09-18 11:41:09,250 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:41:09,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:41:09,251 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:41:09,251 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:41:09,251 INFO L87 Difference]: Start difference. First operand 159783 states and 187229 transitions. Second operand 3 states. [2018-09-18 11:41:15,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:41:15,191 INFO L93 Difference]: Finished difference Result 318710 states and 373692 transitions. [2018-09-18 11:41:15,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:41:15,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 417 [2018-09-18 11:41:15,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:41:15,573 INFO L225 Difference]: With dead ends: 318710 [2018-09-18 11:41:15,573 INFO L226 Difference]: Without dead ends: 159737 [2018-09-18 11:41:15,759 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 835 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-18 11:41:15,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159737 states. [2018-09-18 11:41:18,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159737 to 158126. [2018-09-18 11:41:18,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158126 states. [2018-09-18 11:41:18,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158126 states to 158126 states and 185427 transitions. [2018-09-18 11:41:18,390 INFO L78 Accepts]: Start accepts. Automaton has 158126 states and 185427 transitions. Word has length 417 [2018-09-18 11:41:18,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:41:18,390 INFO L480 AbstractCegarLoop]: Abstraction has 158126 states and 185427 transitions. [2018-09-18 11:41:18,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:41:18,391 INFO L276 IsEmpty]: Start isEmpty. Operand 158126 states and 185427 transitions. [2018-09-18 11:41:18,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2018-09-18 11:41:18,418 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:41:18,418 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:41:18,418 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:41:18,419 INFO L82 PathProgramCache]: Analyzing trace with hash 466200773, now seen corresponding path program 1 times [2018-09-18 11:41:18,419 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:41:18,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:18,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:18,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:41:18,420 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:41:18,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:41:19,115 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:41:19,115 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:41:19,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:19,128 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:41:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:19,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:41:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:41:19,414 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:41:20,423 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:41:20,444 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:41:20,444 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 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:41:20,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:41:20,461 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:41:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:41:20,742 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:41:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:41:20,862 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:41:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-09-18 11:41:21,145 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:41:21,145 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-09-18 11:41:21,145 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:41:21,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:41:21,146 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:41:21,146 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:41:21,147 INFO L87 Difference]: Start difference. First operand 158126 states and 185427 transitions. Second operand 9 states. Received shutdown request... [2018-09-18 11:41:30,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:41:30,085 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:41:30,090 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:41:30,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:41:30 BoogieIcfgContainer [2018-09-18 11:41:30,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:41:30,092 INFO L168 Benchmark]: Toolchain (without parser) took 233348.83 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 920.1 MB. Max. memory is 7.1 GB. [2018-09-18 11:41:30,093 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:41:30,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2774.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 341.9 MB). Peak memory consumption was 341.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:41:30,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 340.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:41:30,095 INFO L168 Benchmark]: Boogie Preprocessor took 1281.05 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 993.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-09-18 11:41:30,096 INFO L168 Benchmark]: RCFGBuilder took 10882.68 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 167.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -25.6 MB). Peak memory consumption was 753.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:41:30,097 INFO L168 Benchmark]: TraceAbstraction took 218063.21 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 910.7 MB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -204.1 MB). Peak memory consumption was 706.6 MB. Max. memory is 7.1 GB. [2018-09-18 11:41:30,102 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2774.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 341.9 MB). Peak memory consumption was 341.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 340.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1281.05 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 993.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10882.68 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 167.8 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -25.6 MB). Peak memory consumption was 753.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218063.21 ms. Allocated memory was 2.7 GB in the beginning and 3.6 GB in the end (delta: 910.7 MB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -204.1 MB). Peak memory consumption was 706.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 123). Cancelled while BasicCegarLoop was constructing difference of abstraction (158126states) and FLOYD_HOARE automaton (currently 12 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (81495 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 217.9s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 189.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5600 SDtfs, 41412 SDslu, 5902 SDs, 0 SdLazy, 72613 SolverSat, 16937 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 153.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6373 GetRequests, 6227 SyntacticMatches, 15 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159783occurred in iteration=9, 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: 11.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 17945 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 5621 NumberOfCodeBlocks, 5621 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 8700 ConstructedInterpolants, 0 QuantifiedInterpolants, 7287260 SizeOfPredicates, 9 NumberOfNonLiveVariables, 5517 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 31 InterpolantComputations, 10 PerfectInterpolantSequences, 7323/7624 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/Problem13_label00_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-41-30-117.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label00_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-41-30-117.csv Completed graceful shutdown