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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:16:49,591 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:16:49,593 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:16:49,605 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:16:49,605 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:16:49,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:16:49,608 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:16:49,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:16:49,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:16:49,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:16:49,613 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:16:49,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:16:49,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:16:49,617 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:16:49,618 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:16:49,619 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:16:49,620 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:16:49,622 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:16:49,624 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:16:49,625 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:16:49,627 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:16:49,628 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:16:49,630 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 04:16:49,631 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 04:16:49,631 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 04:16:49,632 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 04:16:49,633 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 04:16:49,634 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 04:16:49,634 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 04:16:49,636 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 04:16:49,636 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 04:16:49,637 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 04:16:49,637 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 04:16:49,637 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 04:16:49,638 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 04:16:49,639 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 04:16:49,639 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:16:49,670 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:16:49,671 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:16:49,672 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:16:49,673 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:16:49,673 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:16:49,673 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:16:49,673 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:16:49,674 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:16:49,674 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:16:49,674 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:16:49,674 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:16:49,674 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:16:49,676 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:16:49,676 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:16:49,676 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:16:49,676 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:16:49,676 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:16:49,677 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:16:49,677 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:16:49,677 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:16:49,677 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:16:49,677 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:16:49,679 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:16:49,679 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:16:49,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:16:49,680 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:16:49,680 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:16:49,680 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:16:49,680 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:16:49,681 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:16:49,681 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:16:49,681 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:16:49,681 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:16:49,681 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:16:49,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:16:49,756 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:16:49,760 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:16:49,762 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:16:49,762 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:16:49,763 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-11-07 04:16:49,822 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b784cdb47/b2fd36876aee45de906a684ea7c90375/FLAG9bc4442f8 [2018-11-07 04:16:50,674 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:16:50,675 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label37_true-unreach-call.c [2018-11-07 04:16:50,728 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b784cdb47/b2fd36876aee45de906a684ea7c90375/FLAG9bc4442f8 [2018-11-07 04:16:50,751 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b784cdb47/b2fd36876aee45de906a684ea7c90375 [2018-11-07 04:16:50,764 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:16:50,766 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:16:50,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:16:50,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:16:50,774 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:16:50,775 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:16:50" (1/1) ... [2018-11-07 04:16:50,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a456000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:50, skipping insertion in model container [2018-11-07 04:16:50,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:16:50" (1/1) ... [2018-11-07 04:16:50,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:16:51,064 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:16:53,003 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:16:53,009 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:16:54,115 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:16:54,172 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:16:54,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54 WrapperNode [2018-11-07 04:16:54,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:16:54,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:16:54,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:16:54,175 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:16:54,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (1/1) ... [2018-11-07 04:16:54,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (1/1) ... [2018-11-07 04:16:54,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:16:54,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:16:54,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:16:54,721 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:16:54,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (1/1) ... [2018-11-07 04:16:54,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (1/1) ... [2018-11-07 04:16:54,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (1/1) ... [2018-11-07 04:16:54,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (1/1) ... [2018-11-07 04:16:54,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (1/1) ... [2018-11-07 04:16:55,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (1/1) ... [2018-11-07 04:16:55,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (1/1) ... [2018-11-07 04:16:55,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:16:55,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:16:55,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:16:55,238 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:16:55,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (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 [2018-11-07 04:16:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 04:16:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:16:55,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:16:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 04:16:55,310 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 04:16:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 04:16:55,311 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 04:16:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 04:16:55,311 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 04:16:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 04:16:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 04:16:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 04:16:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 04:16:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 04:16:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 04:16:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:16:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:16:55,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:16:55,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:17:10,391 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:17:10,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:17:10 BoogieIcfgContainer [2018-11-07 04:17:10,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:17:10,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:17:10,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:17:10,397 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:17:10,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:16:50" (1/3) ... [2018-11-07 04:17:10,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb133f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:17:10, skipping insertion in model container [2018-11-07 04:17:10,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:16:54" (2/3) ... [2018-11-07 04:17:10,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eb133f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:17:10, skipping insertion in model container [2018-11-07 04:17:10,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:17:10" (3/3) ... [2018-11-07 04:17:10,401 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label37_true-unreach-call.c [2018-11-07 04:17:10,411 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:17:10,423 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:17:10,442 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:17:10,499 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:17:10,500 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:17:10,500 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:17:10,500 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:17:10,500 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:17:10,501 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:17:10,501 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:17:10,501 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:17:10,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 04:17:10,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-07 04:17:10,587 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:17:10,588 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:17:10,592 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:17:10,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:17:10,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1282298446, now seen corresponding path program 1 times [2018-11-07 04:17:10,602 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:17:10,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:17:10,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:17:10,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:17:10,665 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:17:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:17:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:17:11,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:17:11,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 04:17:11,205 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:17:11,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 04:17:11,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 04:17:11,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:17:11,229 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-07 04:17:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:17:33,362 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-11-07 04:17:33,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 04:17:33,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-11-07 04:17:33,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:17:33,428 INFO L225 Difference]: With dead ends: 6513 [2018-11-07 04:17:33,428 INFO L226 Difference]: Without dead ends: 4729 [2018-11-07 04:17:33,444 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:17:33,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-11-07 04:17:33,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-11-07 04:17:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-07 04:17:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-11-07 04:17:33,712 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 45 [2018-11-07 04:17:33,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:17:33,713 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-11-07 04:17:33,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 04:17:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-11-07 04:17:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-07 04:17:33,721 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:17:33,721 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:17:33,722 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:17:33,722 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:17:33,722 INFO L82 PathProgramCache]: Analyzing trace with hash 889446652, now seen corresponding path program 1 times [2018-11-07 04:17:33,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:17:33,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:17:33,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:17:33,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:17:33,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:17:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:17:34,164 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:17:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:17:34,567 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:17:34,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:17:34,568 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:17:34,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:17:34,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:17:34,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:17:34,574 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-11-07 04:17:58,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:17:58,714 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-11-07 04:17:58,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:17:58,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-11-07 04:17:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:17:58,779 INFO L225 Difference]: With dead ends: 17886 [2018-11-07 04:17:58,780 INFO L226 Difference]: Without dead ends: 13199 [2018-11-07 04:17:58,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 04:17:58,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-11-07 04:17:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-11-07 04:17:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-11-07 04:17:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-11-07 04:17:59,141 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 117 [2018-11-07 04:17:59,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:17:59,142 INFO L480 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-11-07 04:17:59,143 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:17:59,143 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-11-07 04:17:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 04:17:59,147 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:17:59,148 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:17:59,148 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:17:59,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:17:59,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1968737342, now seen corresponding path program 1 times [2018-11-07 04:17:59,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:17:59,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:17:59,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:17:59,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:17:59,150 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:17:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:17:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:17:59,687 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:17:59,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:17:59,687 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:17:59,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:17:59,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:17:59,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:17:59,689 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-11-07 04:18:17,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:18:17,346 INFO L93 Difference]: Finished difference Result 39923 states and 60296 transitions. [2018-11-07 04:18:17,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 04:18:17,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-11-07 04:18:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:18:17,463 INFO L225 Difference]: With dead ends: 39923 [2018-11-07 04:18:17,464 INFO L226 Difference]: Without dead ends: 26799 [2018-11-07 04:18:17,508 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 04:18:17,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26799 states. [2018-11-07 04:18:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26799 to 26543. [2018-11-07 04:18:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26543 states. [2018-11-07 04:18:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26543 states to 26543 states and 38662 transitions. [2018-11-07 04:18:18,231 INFO L78 Accepts]: Start accepts. Automaton has 26543 states and 38662 transitions. Word has length 127 [2018-11-07 04:18:18,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:18:18,232 INFO L480 AbstractCegarLoop]: Abstraction has 26543 states and 38662 transitions. [2018-11-07 04:18:18,232 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:18:18,232 INFO L276 IsEmpty]: Start isEmpty. Operand 26543 states and 38662 transitions. [2018-11-07 04:18:18,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-07 04:18:18,237 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:18:18,237 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:18:18,238 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:18:18,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:18:18,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1600159600, now seen corresponding path program 1 times [2018-11-07 04:18:18,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:18:18,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:18:18,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:18:18,244 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:18:18,244 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:18:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:18:18,531 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:18:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:18:18,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:18:18,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:18:18,943 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:18:18,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:18:18,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:18:18,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:18:18,944 INFO L87 Difference]: Start difference. First operand 26543 states and 38662 transitions. Second operand 6 states. [2018-11-07 04:18:38,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:18:38,713 INFO L93 Difference]: Finished difference Result 70591 states and 107233 transitions. [2018-11-07 04:18:38,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:18:38,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-11-07 04:18:38,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:18:38,881 INFO L225 Difference]: With dead ends: 70591 [2018-11-07 04:18:38,882 INFO L226 Difference]: Without dead ends: 44054 [2018-11-07 04:18:38,949 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 04:18:38,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44054 states. [2018-11-07 04:18:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44054 to 43873. [2018-11-07 04:18:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43873 states. [2018-11-07 04:18:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43873 states to 43873 states and 61147 transitions. [2018-11-07 04:18:39,776 INFO L78 Accepts]: Start accepts. Automaton has 43873 states and 61147 transitions. Word has length 160 [2018-11-07 04:18:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:18:39,776 INFO L480 AbstractCegarLoop]: Abstraction has 43873 states and 61147 transitions. [2018-11-07 04:18:39,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:18:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 43873 states and 61147 transitions. [2018-11-07 04:18:39,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-07 04:18:39,781 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:18:39,781 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 04:18:39,784 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:18:39,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:18:39,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1164760866, now seen corresponding path program 1 times [2018-11-07 04:18:39,785 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:18:39,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:18:39,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:18:39,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:18:39,786 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:18:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:18:40,077 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:18:40,436 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 76 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 04:18:40,437 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:18:40,437 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:18:40,438 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-11-07 04:18:40,441 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5486], [5488], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5724], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 04:18:40,549 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:18:40,549 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:18:42,849 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:18:42,850 INFO L272 AbstractInterpreter]: Visited 84 different actions 84 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 04:18:42,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:18:42,878 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:18:45,018 INFO L227 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 75.64% of their original sizes. [2018-11-07 04:18:45,019 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:18:45,495 INFO L415 sIntCurrentIteration]: We unified 195 AI predicates to 195 [2018-11-07 04:18:45,496 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:18:45,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:18:45,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 04:18:45,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:18:45,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 04:18:45,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 04:18:45,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:18:45,499 INFO L87 Difference]: Start difference. First operand 43873 states and 61147 transitions. Second operand 7 states. [2018-11-07 04:18:48,764 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 04:20:21,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:20:21,835 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:20:21,840 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:20:21,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:20:21 BoogieIcfgContainer [2018-11-07 04:20:21,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:20:21,842 INFO L168 Benchmark]: Toolchain (without parser) took 211076.71 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 04:20:21,843 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 04:20:21,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3406.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-11-07 04:20:21,844 INFO L168 Benchmark]: Boogie Procedure Inliner took 546.43 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 859.8 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 99.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:20:21,845 INFO L168 Benchmark]: Boogie Preprocessor took 516.89 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:20:21,846 INFO L168 Benchmark]: RCFGBuilder took 15154.19 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 147.8 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 524.2 MB). Peak memory consumption was 672.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:20:21,847 INFO L168 Benchmark]: TraceAbstraction took 191447.62 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 568.7 MB. Max. memory is 7.1 GB. [2018-11-07 04:20:21,853 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 3406.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 546.43 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 859.8 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 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 516.89 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15154.19 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 147.8 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 524.2 MB). Peak memory consumption was 672.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 191447.62 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 568.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (43873states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (46148 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 191.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 180.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4010 SDtfs, 28434 SDslu, 3057 SDs, 0 SdLazy, 42579 SolverSat, 9789 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 127.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 233 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43873occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9952347140039446 AbsIntWeakeningRatio, 0.14358974358974358 AbsIntAvgWeakeningVarsNumRemoved, 1027.3333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 542 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 645 NumberOfCodeBlocks, 645 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 382895 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 195/260 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown