java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label57_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:05:43,722 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:05:43,727 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:05:43,743 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:05:43,743 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:05:43,744 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:05:43,746 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:05:43,747 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:05:43,749 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:05:43,750 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:05:43,751 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:05:43,751 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:05:43,752 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:05:43,753 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:05:43,754 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:05:43,755 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:05:43,756 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:05:43,758 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:05:43,760 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:05:43,761 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:05:43,763 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:05:43,764 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:05:43,767 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:05:43,767 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:05:43,767 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:05:43,768 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:05:43,769 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:05:43,770 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:05:43,771 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:05:43,772 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:05:43,772 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:05:43,773 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 22:05:43,773 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:05:43,773 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:05:43,774 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:05:43,775 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:05:43,775 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:05:43,803 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:05:43,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:05:43,805 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:05:43,805 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:05:43,805 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:05:43,806 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:05:43,806 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:05:43,806 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:05:43,806 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:05:43,807 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:05:43,807 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:05:43,807 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:05:43,808 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:05:43,808 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:05:43,808 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:05:43,808 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:05:43,808 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:05:43,808 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:05:43,810 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:05:43,810 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:05:43,810 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:05:43,811 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:05:43,811 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:05:43,811 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:05:43,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:05:43,812 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:05:43,812 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:05:43,812 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:05:43,812 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:05:43,813 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:05:43,813 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:05:43,813 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:05:43,813 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:05:43,813 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:05:43,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:05:43,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:05:43,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:05:43,886 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:05:43,886 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:05:43,887 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label57_false-unreach-call.c [2018-10-23 22:05:43,945 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d18b77fd/7778116684264d18aae9e5e0a5bb7a69/FLAG19f6ea920 [2018-10-23 22:05:44,509 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:05:44,511 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label57_false-unreach-call.c [2018-10-23 22:05:44,527 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d18b77fd/7778116684264d18aae9e5e0a5bb7a69/FLAG19f6ea920 [2018-10-23 22:05:44,550 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7d18b77fd/7778116684264d18aae9e5e0a5bb7a69 [2018-10-23 22:05:44,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:05:44,567 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:05:44,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:05:44,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:05:44,574 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:05:44,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:05:44" (1/1) ... [2018-10-23 22:05:44,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33fe9958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:44, skipping insertion in model container [2018-10-23 22:05:44,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:05:44" (1/1) ... [2018-10-23 22:05:44,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:05:44,644 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:05:45,051 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:05:45,059 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:05:45,174 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:05:45,191 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:05:45,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45 WrapperNode [2018-10-23 22:05:45,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:05:45,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:05:45,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:05:45,193 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:05:45,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (1/1) ... [2018-10-23 22:05:45,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (1/1) ... [2018-10-23 22:05:45,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:05:45,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:05:45,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:05:45,394 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:05:45,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (1/1) ... [2018-10-23 22:05:45,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (1/1) ... [2018-10-23 22:05:45,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (1/1) ... [2018-10-23 22:05:45,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (1/1) ... [2018-10-23 22:05:45,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (1/1) ... [2018-10-23 22:05:45,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (1/1) ... [2018-10-23 22:05:45,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (1/1) ... [2018-10-23 22:05:45,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:05:45,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:05:45,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:05:45,533 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:05:45,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 22:05:45,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:05:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:05:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:05:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:05:45,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:05:45,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:05:45,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:05:45,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:05:49,021 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:05:49,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:05:49 BoogieIcfgContainer [2018-10-23 22:05:49,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:05:49,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:05:49,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:05:49,027 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:05:49,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:05:44" (1/3) ... [2018-10-23 22:05:49,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7982eb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:05:49, skipping insertion in model container [2018-10-23 22:05:49,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:05:45" (2/3) ... [2018-10-23 22:05:49,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7982eb51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:05:49, skipping insertion in model container [2018-10-23 22:05:49,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:05:49" (3/3) ... [2018-10-23 22:05:49,031 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label57_false-unreach-call.c [2018-10-23 22:05:49,041 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:05:49,050 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:05:49,068 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:05:49,107 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:05:49,108 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:05:49,108 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:05:49,108 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:05:49,108 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:05:49,108 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:05:49,109 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:05:49,109 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:05:49,146 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-23 22:05:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-23 22:05:49,154 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:49,155 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:05:49,158 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:49,164 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:49,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1838359401, now seen corresponding path program 1 times [2018-10-23 22:05:49,167 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:49,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:49,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:49,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:49,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:49,561 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:05:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:49,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:49,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:05:49,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:49,685 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:05:49,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:05:49,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:05:49,704 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-23 22:05:51,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:51,707 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-23 22:05:51,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:05:51,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-23 22:05:51,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:51,734 INFO L225 Difference]: With dead ends: 574 [2018-10-23 22:05:51,735 INFO L226 Difference]: Without dead ends: 356 [2018-10-23 22:05:51,742 INFO L605 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 [2018-10-23 22:05:51,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-23 22:05:51,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-23 22:05:51,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-23 22:05:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-23 22:05:51,844 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 13 [2018-10-23 22:05:51,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:51,845 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-23 22:05:51,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:05:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-23 22:05:51,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-23 22:05:51,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:51,851 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:05:51,851 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:51,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:51,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1031774248, now seen corresponding path program 1 times [2018-10-23 22:05:51,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:51,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:51,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:51,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:51,854 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:52,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:52,270 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:05:52,270 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:52,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:05:52,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:05:52,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:05:52,273 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 6 states. [2018-10-23 22:05:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:54,335 INFO L93 Difference]: Finished difference Result 867 states and 1507 transitions. [2018-10-23 22:05:54,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:05:54,336 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2018-10-23 22:05:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:54,342 INFO L225 Difference]: With dead ends: 867 [2018-10-23 22:05:54,342 INFO L226 Difference]: Without dead ends: 517 [2018-10-23 22:05:54,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:05:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-10-23 22:05:54,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 508. [2018-10-23 22:05:54,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-10-23 22:05:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 831 transitions. [2018-10-23 22:05:54,400 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 831 transitions. Word has length 87 [2018-10-23 22:05:54,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:54,401 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 831 transitions. [2018-10-23 22:05:54,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:05:54,402 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 831 transitions. [2018-10-23 22:05:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-23 22:05:54,406 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:54,406 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:05:54,407 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:54,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:54,407 INFO L82 PathProgramCache]: Analyzing trace with hash -281780396, now seen corresponding path program 1 times [2018-10-23 22:05:54,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:54,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:54,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:54,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:54,409 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:54,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:54,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:54,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:05:54,544 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:54,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:05:54,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:05:54,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:05:54,546 INFO L87 Difference]: Start difference. First operand 508 states and 831 transitions. Second operand 3 states. [2018-10-23 22:05:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:55,765 INFO L93 Difference]: Finished difference Result 1448 states and 2461 transitions. [2018-10-23 22:05:55,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:05:55,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 93 [2018-10-23 22:05:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:55,776 INFO L225 Difference]: With dead ends: 1448 [2018-10-23 22:05:55,777 INFO L226 Difference]: Without dead ends: 946 [2018-10-23 22:05:55,781 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:05:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2018-10-23 22:05:55,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2018-10-23 22:05:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2018-10-23 22:05:55,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1389 transitions. [2018-10-23 22:05:55,827 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1389 transitions. Word has length 93 [2018-10-23 22:05:55,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:55,828 INFO L481 AbstractCegarLoop]: Abstraction has 946 states and 1389 transitions. [2018-10-23 22:05:55,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:05:55,828 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1389 transitions. [2018-10-23 22:05:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-10-23 22:05:55,833 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:55,833 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:05:55,833 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:55,833 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:55,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1162021757, now seen corresponding path program 1 times [2018-10-23 22:05:55,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:55,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:55,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:55,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:55,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:05:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:05:56,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:05:56,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:05:56,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:05:56,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:05:56,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:05:56,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:05:56,024 INFO L87 Difference]: Start difference. First operand 946 states and 1389 transitions. Second operand 6 states. [2018-10-23 22:05:59,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:05:59,705 INFO L93 Difference]: Finished difference Result 2476 states and 3870 transitions. [2018-10-23 22:05:59,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:05:59,708 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-10-23 22:05:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:05:59,724 INFO L225 Difference]: With dead ends: 2476 [2018-10-23 22:05:59,724 INFO L226 Difference]: Without dead ends: 1536 [2018-10-23 22:05:59,734 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:05:59,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2018-10-23 22:05:59,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1517. [2018-10-23 22:05:59,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1517 states. [2018-10-23 22:05:59,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2192 transitions. [2018-10-23 22:05:59,803 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2192 transitions. Word has length 104 [2018-10-23 22:05:59,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:05:59,803 INFO L481 AbstractCegarLoop]: Abstraction has 1517 states and 2192 transitions. [2018-10-23 22:05:59,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:05:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2192 transitions. [2018-10-23 22:05:59,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-23 22:05:59,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:05:59,809 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:05:59,810 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:05:59,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:05:59,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1276807536, now seen corresponding path program 1 times [2018-10-23 22:05:59,810 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:05:59,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:59,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:05:59,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:05:59,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:05:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:06:00,145 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:06:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:06:00,517 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:06:00,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:06:00,517 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:06:00,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:06:00,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:06:00,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:06:00,519 INFO L87 Difference]: Start difference. First operand 1517 states and 2192 transitions. Second operand 6 states. [2018-10-23 22:06:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:06:02,074 INFO L93 Difference]: Finished difference Result 3307 states and 4766 transitions. [2018-10-23 22:06:02,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:06:02,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-23 22:06:02,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:06:02,099 INFO L225 Difference]: With dead ends: 3307 [2018-10-23 22:06:02,099 INFO L226 Difference]: Without dead ends: 1796 [2018-10-23 22:06:02,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:06:02,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2018-10-23 22:06:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1751. [2018-10-23 22:06:02,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1751 states. [2018-10-23 22:06:02,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1751 states to 1751 states and 2338 transitions. [2018-10-23 22:06:02,175 INFO L78 Accepts]: Start accepts. Automaton has 1751 states and 2338 transitions. Word has length 155 [2018-10-23 22:06:02,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:06:02,175 INFO L481 AbstractCegarLoop]: Abstraction has 1751 states and 2338 transitions. [2018-10-23 22:06:02,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:06:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1751 states and 2338 transitions. [2018-10-23 22:06:02,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-23 22:06:02,180 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:06:02,181 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:06:02,181 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:06:02,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:02,182 INFO L82 PathProgramCache]: Analyzing trace with hash 555074088, now seen corresponding path program 1 times [2018-10-23 22:06:02,182 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:06:02,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:02,183 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:06:02,183 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:02,183 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:06:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:06:02,383 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-23 22:06:02,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:06:02,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:06:02,384 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:06:02,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:06:02,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:06:02,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:06:02,386 INFO L87 Difference]: Start difference. First operand 1751 states and 2338 transitions. Second operand 3 states. [2018-10-23 22:06:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:06:04,003 INFO L93 Difference]: Finished difference Result 4731 states and 6537 transitions. [2018-10-23 22:06:04,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:06:04,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2018-10-23 22:06:04,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:06:04,031 INFO L225 Difference]: With dead ends: 4731 [2018-10-23 22:06:04,031 INFO L226 Difference]: Without dead ends: 2986 [2018-10-23 22:06:04,045 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:06:04,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2018-10-23 22:06:04,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2962. [2018-10-23 22:06:04,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2962 states. [2018-10-23 22:06:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2962 states to 2962 states and 3774 transitions. [2018-10-23 22:06:04,149 INFO L78 Accepts]: Start accepts. Automaton has 2962 states and 3774 transitions. Word has length 192 [2018-10-23 22:06:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:06:04,151 INFO L481 AbstractCegarLoop]: Abstraction has 2962 states and 3774 transitions. [2018-10-23 22:06:04,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:06:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2962 states and 3774 transitions. [2018-10-23 22:06:04,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-23 22:06:04,168 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:06:04,168 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:06:04,169 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:06:04,169 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:04,169 INFO L82 PathProgramCache]: Analyzing trace with hash 36527643, now seen corresponding path program 1 times [2018-10-23 22:06:04,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:06:04,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:04,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:06:04,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:06:04,171 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:06:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:06:04,538 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:06:05,336 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-23 22:06:05,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:06:05,337 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:06:05,338 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 236 with the following transitions: [2018-10-23 22:06:05,341 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [10], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [782], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-23 22:06:05,423 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:06:05,423 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:06:08,427 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:06:39,558 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:06:39,560 INFO L272 AbstractInterpreter]: Visited 150 different actions 870 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 22:06:39,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:06:39,574 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:06:43,250 INFO L232 lantSequenceWeakener]: Weakened 66 states. On average, predicates are now at 73.19% of their original sizes. [2018-10-23 22:06:43,250 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:07:10,814 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:07:10,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:07:10,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [8] total 31 [2018-10-23 22:07:10,816 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:07:10,816 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-23 22:07:10,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-23 22:07:10,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2018-10-23 22:07:10,817 INFO L87 Difference]: Start difference. First operand 2962 states and 3774 transitions. Second operand 25 states. [2018-10-23 22:09:32,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:09:32,039 INFO L93 Difference]: Finished difference Result 6489 states and 8269 transitions. [2018-10-23 22:09:32,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-23 22:09:32,039 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 235 [2018-10-23 22:09:32,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:09:32,057 INFO L225 Difference]: With dead ends: 6489 [2018-10-23 22:09:32,058 INFO L226 Difference]: Without dead ends: 3533 [2018-10-23 22:09:32,068 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 248 GetRequests, 187 SyntacticMatches, 24 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2018-10-23 22:09:32,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3533 states. [2018-10-23 22:09:32,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3533 to 3254. [2018-10-23 22:09:32,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3254 states. [2018-10-23 22:09:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 4071 transitions. [2018-10-23 22:09:32,224 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 4071 transitions. Word has length 235 [2018-10-23 22:09:32,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:09:32,225 INFO L481 AbstractCegarLoop]: Abstraction has 3254 states and 4071 transitions. [2018-10-23 22:09:32,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-23 22:09:32,225 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 4071 transitions. [2018-10-23 22:09:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-23 22:09:32,235 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:09:32,236 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:09:32,236 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:09:32,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:09:32,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1124090659, now seen corresponding path program 1 times [2018-10-23 22:09:32,237 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:09:32,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:09:32,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:09:32,238 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:09:32,238 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:09:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:09:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-23 22:09:32,587 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:09:32,588 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:09:32,588 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-10-23 22:09:32,589 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [10], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [782], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-23 22:09:32,598 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:09:32,598 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:09:35,757 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-23 22:09:35,907 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-23 22:09:35,907 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-23 22:09:35,909 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 22:09:35,909 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:09:35,909 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 22:09:35,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:09:35,918 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 22:09:36,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:09:36,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 22:09:36,064 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 22:09:36,265 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 22:09:36,266 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:09:36,271 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:09:36,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:09:36 BoogieIcfgContainer [2018-10-23 22:09:36,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:09:36,273 INFO L168 Benchmark]: Toolchain (without parser) took 231707.24 ms. Allocated memory was 1.6 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -364.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-23 22:09:36,274 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:09:36,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.17 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:36,276 INFO L168 Benchmark]: Boogie Procedure Inliner took 200.59 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -842.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:36,277 INFO L168 Benchmark]: Boogie Preprocessor took 138.31 ms. Allocated memory is still 2.3 GB. Free memory is still 2.3 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:09:36,277 INFO L168 Benchmark]: RCFGBuilder took 3489.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:09:36,278 INFO L168 Benchmark]: TraceAbstraction took 227248.88 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 317.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-23 22:09:36,283 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 624.17 ms. Allocated memory is still 1.6 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 200.59 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 766.0 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -842.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.31 ms. Allocated memory is still 2.3 GB. Free memory is still 2.3 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3489.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227248.88 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 317.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 22]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 22). Cancelled while BasicCegarLoop was analyzing trace of length 272 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 227.1s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 153.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1210 SDtfs, 4840 SDslu, 720 SDs, 0 SdLazy, 6036 SolverSat, 1097 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 291 GetRequests, 201 SyntacticMatches, 29 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 32.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3254occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 37.5s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9949600520252697 AbsIntWeakeningRatio, 0.1111111111111111 AbsIntAvgWeakeningVarsNumRemoved, 277.71367521367523 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 376 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 879 NumberOfCodeBlocks, 879 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 872 ConstructedInterpolants, 0 QuantifiedInterpolants, 577206 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 210/216 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown