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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label13_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 17:47:13,570 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 17:47:13,572 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 17:47:13,584 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 17:47:13,585 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 17:47:13,586 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 17:47:13,587 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 17:47:13,589 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 17:47:13,590 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 17:47:13,591 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 17:47:13,592 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 17:47:13,592 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 17:47:13,593 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 17:47:13,595 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 17:47:13,596 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 17:47:13,597 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 17:47:13,598 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 17:47:13,600 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 17:47:13,602 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 17:47:13,603 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 17:47:13,607 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 17:47:13,608 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 17:47:13,613 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 17:47:13,613 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 17:47:13,614 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 17:47:13,615 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 17:47:13,616 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 17:47:13,620 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 17:47:13,621 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 17:47:13,624 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 17:47:13,624 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 17:47:13,625 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 17:47:13,626 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 17:47:13,626 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 17:47:13,627 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 17:47:13,628 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 17:47:13,629 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 17:47:13,655 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 17:47:13,656 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 17:47:13,657 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 17:47:13,657 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 17:47:13,657 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 17:47:13,657 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 17:47:13,657 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 17:47:13,658 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 17:47:13,658 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 17:47:13,658 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 17:47:13,658 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 17:47:13,658 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 17:47:13,659 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 17:47:13,659 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 17:47:13,659 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 17:47:13,660 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 17:47:13,660 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 17:47:13,660 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 17:47:13,660 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 17:47:13,660 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 17:47:13,661 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 17:47:13,661 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 17:47:13,661 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 17:47:13,661 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 17:47:13,662 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 17:47:13,662 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:47:13,662 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 17:47:13,662 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 17:47:13,662 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 17:47:13,663 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 17:47:13,663 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 17:47:13,663 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 17:47:13,663 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 17:47:13,663 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 17:47:13,663 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 17:47:13,718 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 17:47:13,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 17:47:13,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 17:47:13,742 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 17:47:13,742 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 17:47:13,743 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label13_false-unreach-call.c [2018-11-07 17:47:13,808 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25517c545/37bcd0d23003404093c9e0903b8d6cd0/FLAG22399adc3 [2018-11-07 17:47:14,629 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 17:47:14,630 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label13_false-unreach-call.c [2018-11-07 17:47:14,660 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25517c545/37bcd0d23003404093c9e0903b8d6cd0/FLAG22399adc3 [2018-11-07 17:47:14,676 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25517c545/37bcd0d23003404093c9e0903b8d6cd0 [2018-11-07 17:47:14,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 17:47:14,691 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 17:47:14,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 17:47:14,692 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 17:47:14,697 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 17:47:14,698 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:47:14" (1/1) ... [2018-11-07 17:47:14,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c9c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:14, skipping insertion in model container [2018-11-07 17:47:14,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:47:14" (1/1) ... [2018-11-07 17:47:14,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 17:47:14,876 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 17:47:16,326 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:47:16,330 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 17:47:16,883 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:47:16,936 INFO L193 MainTranslator]: Completed translation [2018-11-07 17:47:16,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16 WrapperNode [2018-11-07 17:47:16,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 17:47:16,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 17:47:16,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 17:47:16,938 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 17:47:16,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (1/1) ... [2018-11-07 17:47:17,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (1/1) ... [2018-11-07 17:47:17,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 17:47:17,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 17:47:17,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 17:47:17,267 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 17:47:17,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (1/1) ... [2018-11-07 17:47:17,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (1/1) ... [2018-11-07 17:47:17,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (1/1) ... [2018-11-07 17:47:17,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (1/1) ... [2018-11-07 17:47:17,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (1/1) ... [2018-11-07 17:47:17,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (1/1) ... [2018-11-07 17:47:17,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (1/1) ... [2018-11-07 17:47:17,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 17:47:17,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 17:47:17,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 17:47:17,509 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 17:47:17,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (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 17:47:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 17:47:17,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 17:47:17,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 17:47:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 17:47:17,582 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 17:47:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 17:47:17,582 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 17:47:17,582 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 17:47:17,583 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 17:47:17,583 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 17:47:17,583 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 17:47:17,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 17:47:17,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 17:47:17,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 17:47:17,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 17:47:26,823 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 17:47:26,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:47:26 BoogieIcfgContainer [2018-11-07 17:47:26,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 17:47:26,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 17:47:26,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 17:47:26,828 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 17:47:26,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:47:14" (1/3) ... [2018-11-07 17:47:26,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214379c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:47:26, skipping insertion in model container [2018-11-07 17:47:26,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:47:16" (2/3) ... [2018-11-07 17:47:26,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@214379c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:47:26, skipping insertion in model container [2018-11-07 17:47:26,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:47:26" (3/3) ... [2018-11-07 17:47:26,832 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label13_false-unreach-call.c [2018-11-07 17:47:26,842 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 17:47:26,852 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 17:47:26,870 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 17:47:26,916 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 17:47:26,916 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 17:47:26,916 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 17:47:26,916 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 17:47:26,916 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 17:47:26,916 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 17:47:26,917 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 17:47:26,917 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 17:47:26,957 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 17:47:26,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-07 17:47:26,966 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:26,967 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] [2018-11-07 17:47:26,969 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:26,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:26,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1319252181, now seen corresponding path program 1 times [2018-11-07 17:47:26,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:27,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:27,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:27,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:27,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:27,428 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:47:27,542 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 17:47:27,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:47:27,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 17:47:27,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:27,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:47:27,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:47:27,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:47:27,566 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 17:47:35,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:47:35,302 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 17:47:35,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:47:35,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-11-07 17:47:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:47:35,341 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 17:47:35,341 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 17:47:35,354 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:47:35,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 17:47:35,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 17:47:35,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 17:47:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-11-07 17:47:35,538 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 35 [2018-11-07 17:47:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:47:35,539 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-11-07 17:47:35,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:47:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-11-07 17:47:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 17:47:35,550 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:35,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:35,551 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:35,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:35,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1587812788, now seen corresponding path program 1 times [2018-11-07 17:47:35,552 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:35,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:35,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:35,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:35,559 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:47:35,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:47:35,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:47:35,966 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:35,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:47:35,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:47:35,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:47:35,969 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-11-07 17:47:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:47:50,047 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-11-07 17:47:50,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:47:50,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-07 17:47:50,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:47:50,080 INFO L225 Difference]: With dead ends: 6330 [2018-11-07 17:47:50,080 INFO L226 Difference]: Without dead ends: 4732 [2018-11-07 17:47:50,090 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 17:47:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-11-07 17:47:50,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-11-07 17:47:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-11-07 17:47:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-11-07 17:47:50,235 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 113 [2018-11-07 17:47:50,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:47:50,236 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-11-07 17:47:50,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:47:50,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-11-07 17:47:50,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 17:47:50,241 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:50,242 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:50,244 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:50,244 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:50,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1750714015, now seen corresponding path program 1 times [2018-11-07 17:47:50,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:50,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:50,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:50,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:50,246 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:50,568 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:47:50,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:47:50,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 17:47:50,569 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:50,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 17:47:50,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 17:47:50,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 17:47:50,571 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-11-07 17:47:57,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:47:57,853 INFO L93 Difference]: Finished difference Result 14303 states and 23676 transitions. [2018-11-07 17:47:57,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 17:47:57,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2018-11-07 17:47:57,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:47:57,920 INFO L225 Difference]: With dead ends: 14303 [2018-11-07 17:47:57,920 INFO L226 Difference]: Without dead ends: 9609 [2018-11-07 17:47:57,936 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:47:57,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2018-11-07 17:47:58,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9527. [2018-11-07 17:47:58,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9527 states. [2018-11-07 17:47:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 14359 transitions. [2018-11-07 17:47:58,219 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 14359 transitions. Word has length 116 [2018-11-07 17:47:58,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:47:58,219 INFO L480 AbstractCegarLoop]: Abstraction has 9527 states and 14359 transitions. [2018-11-07 17:47:58,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 17:47:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 14359 transitions. [2018-11-07 17:47:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 17:47:58,227 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:58,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:58,228 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:58,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:58,229 INFO L82 PathProgramCache]: Analyzing trace with hash 716449312, now seen corresponding path program 1 times [2018-11-07 17:47:58,229 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:58,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:58,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:58,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:58,231 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:47:58,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:47:58,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:47:58,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:58,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:47:58,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:47:58,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:47:58,754 INFO L87 Difference]: Start difference. First operand 9527 states and 14359 transitions. Second operand 6 states. [2018-11-07 17:48:15,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:48:15,428 INFO L93 Difference]: Finished difference Result 38548 states and 63646 transitions. [2018-11-07 17:48:15,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 17:48:15,429 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-07 17:48:15,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:48:15,597 INFO L225 Difference]: With dead ends: 38548 [2018-11-07 17:48:15,598 INFO L226 Difference]: Without dead ends: 29027 [2018-11-07 17:48:15,699 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 17:48:15,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29027 states. [2018-11-07 17:48:16,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29027 to 28824. [2018-11-07 17:48:16,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28824 states. [2018-11-07 17:48:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28824 states to 28824 states and 42272 transitions. [2018-11-07 17:48:16,574 INFO L78 Accepts]: Start accepts. Automaton has 28824 states and 42272 transitions. Word has length 139 [2018-11-07 17:48:16,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:48:16,575 INFO L480 AbstractCegarLoop]: Abstraction has 28824 states and 42272 transitions. [2018-11-07 17:48:16,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:48:16,575 INFO L276 IsEmpty]: Start isEmpty. Operand 28824 states and 42272 transitions. [2018-11-07 17:48:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-07 17:48:16,579 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:48:16,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:48:16,580 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:48:16,580 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash 72543737, now seen corresponding path program 1 times [2018-11-07 17:48:16,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:48:16,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:16,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:48:16,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:16,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:48:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:48:16,874 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:48:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:48:17,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:48:17,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:48:17,279 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:48:17,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:48:17,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:48:17,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:48:17,283 INFO L87 Difference]: Start difference. First operand 28824 states and 42272 transitions. Second operand 6 states. [2018-11-07 17:48:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:48:27,471 INFO L93 Difference]: Finished difference Result 77165 states and 121238 transitions. [2018-11-07 17:48:27,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:48:27,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2018-11-07 17:48:27,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:48:27,660 INFO L225 Difference]: With dead ends: 77165 [2018-11-07 17:48:27,661 INFO L226 Difference]: Without dead ends: 48347 [2018-11-07 17:48:27,733 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 17:48:27,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48347 states. [2018-11-07 17:48:28,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48347 to 48115. [2018-11-07 17:48:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48115 states. [2018-11-07 17:48:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48115 states to 48115 states and 68182 transitions. [2018-11-07 17:48:28,843 INFO L78 Accepts]: Start accepts. Automaton has 48115 states and 68182 transitions. Word has length 160 [2018-11-07 17:48:28,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:48:28,843 INFO L480 AbstractCegarLoop]: Abstraction has 48115 states and 68182 transitions. [2018-11-07 17:48:28,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:48:28,843 INFO L276 IsEmpty]: Start isEmpty. Operand 48115 states and 68182 transitions. [2018-11-07 17:48:28,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-07 17:48:28,853 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:48:28,854 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 17:48:28,854 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:48:28,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:28,854 INFO L82 PathProgramCache]: Analyzing trace with hash -737174824, now seen corresponding path program 1 times [2018-11-07 17:48:28,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:48:28,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:28,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:48:28,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:28,858 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:48:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:48:29,146 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:48:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 56 proven. 76 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 17:48:29,563 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:48:29,563 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:48:29,564 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 231 with the following transitions: [2018-11-07 17:48:29,573 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2047], [2049], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2404], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2536], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:48:29,636 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:48:29,637 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:48:30,421 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:48:30,424 INFO L272 AbstractInterpreter]: Visited 119 different actions 119 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 17:48:30,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:30,468 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:48:31,039 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 75.24% of their original sizes. [2018-11-07 17:48:31,040 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:48:31,514 INFO L415 sIntCurrentIteration]: We unified 229 AI predicates to 229 [2018-11-07 17:48:31,515 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:48:31,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:48:31,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 17:48:31,516 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:48:31,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 17:48:31,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 17:48:31,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 17:48:31,517 INFO L87 Difference]: Start difference. First operand 48115 states and 68182 transitions. Second operand 8 states. [2018-11-07 17:48:37,654 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:49:13,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:49:13,631 INFO L93 Difference]: Finished difference Result 96994 states and 137268 transitions. [2018-11-07 17:49:13,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 17:49:13,631 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 230 [2018-11-07 17:49:13,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:49:13,818 INFO L225 Difference]: With dead ends: 96994 [2018-11-07 17:49:13,819 INFO L226 Difference]: Without dead ends: 48885 [2018-11-07 17:49:13,925 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 231 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 17:49:13,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48885 states. [2018-11-07 17:49:14,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48885 to 48883. [2018-11-07 17:49:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48883 states. [2018-11-07 17:49:14,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48883 states to 48883 states and 68961 transitions. [2018-11-07 17:49:14,961 INFO L78 Accepts]: Start accepts. Automaton has 48883 states and 68961 transitions. Word has length 230 [2018-11-07 17:49:14,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:49:14,962 INFO L480 AbstractCegarLoop]: Abstraction has 48883 states and 68961 transitions. [2018-11-07 17:49:14,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 17:49:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 48883 states and 68961 transitions. [2018-11-07 17:49:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-11-07 17:49:14,967 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:49:14,968 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:49:14,968 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:49:14,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:49:14,969 INFO L82 PathProgramCache]: Analyzing trace with hash 281939484, now seen corresponding path program 1 times [2018-11-07 17:49:14,969 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:49:14,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:49:14,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:49:14,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:49:14,970 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:49:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:49:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:49:15,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:49:15,521 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:49:15,522 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-11-07 17:49:15,523 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2047], [2049], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2580], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:49:15,533 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:49:15,534 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:49:15,937 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:49:15,937 INFO L272 AbstractInterpreter]: Visited 133 different actions 262 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:49:15,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:49:15,967 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:49:16,324 INFO L227 lantSequenceWeakener]: Weakened 233 states. On average, predicates are now at 75.28% of their original sizes. [2018-11-07 17:49:16,324 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:49:16,553 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-11-07 17:49:16,553 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:49:16,553 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:49:16,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 17:49:16,554 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:49:16,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 17:49:16,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 17:49:16,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:49:16,555 INFO L87 Difference]: Start difference. First operand 48883 states and 68961 transitions. Second operand 11 states. [2018-11-07 17:49:20,674 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:50:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:50:11,901 INFO L93 Difference]: Finished difference Result 98534 states and 139010 transitions. [2018-11-07 17:50:11,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 17:50:11,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 236 [2018-11-07 17:50:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:50:12,037 INFO L225 Difference]: With dead ends: 98534 [2018-11-07 17:50:12,038 INFO L226 Difference]: Without dead ends: 50425 [2018-11-07 17:50:12,111 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 244 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 17:50:12,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50425 states. [2018-11-07 17:50:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50425 to 50422. [2018-11-07 17:50:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50422 states. [2018-11-07 17:50:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50422 states to 50422 states and 70515 transitions. [2018-11-07 17:50:13,075 INFO L78 Accepts]: Start accepts. Automaton has 50422 states and 70515 transitions. Word has length 236 [2018-11-07 17:50:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:50:13,075 INFO L480 AbstractCegarLoop]: Abstraction has 50422 states and 70515 transitions. [2018-11-07 17:50:13,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 17:50:13,076 INFO L276 IsEmpty]: Start isEmpty. Operand 50422 states and 70515 transitions. [2018-11-07 17:50:13,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-11-07 17:50:13,084 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:50:13,084 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:50:13,085 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:50:13,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:50:13,085 INFO L82 PathProgramCache]: Analyzing trace with hash 333639945, now seen corresponding path program 1 times [2018-11-07 17:50:13,085 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:50:13,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:50:13,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:50:13,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:50:13,087 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:50:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:50:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-11-07 17:50:13,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:50:13,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:50:13,416 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:50:13,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:50:13,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:50:13,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:50:13,418 INFO L87 Difference]: Start difference. First operand 50422 states and 70515 transitions. Second operand 4 states. [2018-11-07 17:50:23,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:50:23,585 INFO L93 Difference]: Finished difference Result 164286 states and 253608 transitions. [2018-11-07 17:50:23,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:50:23,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 285 [2018-11-07 17:50:23,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:50:23,891 INFO L225 Difference]: With dead ends: 164286 [2018-11-07 17:50:23,891 INFO L226 Difference]: Without dead ends: 116177 [2018-11-07 17:50:24,052 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:50:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116177 states. [2018-11-07 17:50:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116177 to 115367. [2018-11-07 17:50:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115367 states. [2018-11-07 17:50:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115367 states to 115367 states and 163080 transitions. [2018-11-07 17:50:27,009 INFO L78 Accepts]: Start accepts. Automaton has 115367 states and 163080 transitions. Word has length 285 [2018-11-07 17:50:27,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:50:27,010 INFO L480 AbstractCegarLoop]: Abstraction has 115367 states and 163080 transitions. [2018-11-07 17:50:27,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:50:27,010 INFO L276 IsEmpty]: Start isEmpty. Operand 115367 states and 163080 transitions. [2018-11-07 17:50:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-07 17:50:27,057 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:50:27,057 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:50:27,058 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:50:27,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:50:27,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1851583854, now seen corresponding path program 1 times [2018-11-07 17:50:27,058 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:50:27,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:50:27,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:50:27,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:50:27,060 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:50:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:50:27,522 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:50:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 90 proven. 266 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 17:50:28,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:50:28,093 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:50:28,093 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-11-07 17:50:28,094 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2047], [2049], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2536], [2537], [2541], [2545], [2549], [2553], [2557], [2560], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:50:28,106 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:50:28,107 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:50:28,266 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:50:28,555 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:50:28,555 INFO L272 AbstractInterpreter]: Visited 155 different actions 304 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:50:28,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:50:28,592 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:50:29,399 INFO L227 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 75.94% of their original sizes. [2018-11-07 17:50:29,399 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:50:29,881 INFO L415 sIntCurrentIteration]: We unified 414 AI predicates to 414 [2018-11-07 17:50:29,881 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:50:29,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:50:29,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 17:50:29,881 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:50:29,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 17:50:29,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 17:50:29,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2018-11-07 17:50:29,883 INFO L87 Difference]: Start difference. First operand 115367 states and 163080 transitions. Second operand 23 states. Received shutdown request... [2018-11-07 17:50:41,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 17:50:41,063 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 17:50:41,070 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 17:50:41,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:50:41 BoogieIcfgContainer [2018-11-07 17:50:41,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 17:50:41,071 INFO L168 Benchmark]: Toolchain (without parser) took 206381.75 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.5 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -603.0 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-07 17:50:41,072 INFO L168 Benchmark]: CDTParser took 0.22 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 17:50:41,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2244.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. [2018-11-07 17:50:41,074 INFO L168 Benchmark]: Boogie Procedure Inliner took 329.10 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 813.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 17:50:41,075 INFO L168 Benchmark]: Boogie Preprocessor took 242.17 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: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 17:50:41,075 INFO L168 Benchmark]: RCFGBuilder took 9315.16 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 140.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -132.7 MB). Peak memory consumption was 656.2 MB. Max. memory is 7.1 GB. [2018-11-07 17:50:41,076 INFO L168 Benchmark]: TraceAbstraction took 194245.10 ms. Allocated memory was 2.5 GB in the beginning and 5.1 GB in the end (delta: 2.6 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 373.2 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 17:50:41,082 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2244.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 329.10 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 813.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 242.17 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: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9315.16 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 140.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -132.7 MB). Peak memory consumption was 656.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 194245.10 ms. Allocated memory was 2.5 GB in the beginning and 5.1 GB in the end (delta: 2.6 GB). Free memory was 2.4 GB in the beginning and 2.0 GB in the end (delta: 373.2 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 96). Cancelled while BasicCegarLoop was constructing difference of abstraction (115367states) and FLOYD_HOARE automaton (currently 17 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1053 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 194.1s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 176.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2939 SDtfs, 22112 SDslu, 1865 SDs, 0 SdLazy, 46370 SolverSat, 7754 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 948 GetRequests, 858 SyntacticMatches, 4 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115367occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.8s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9976063997406971 AbsIntWeakeningRatio, 0.09908883826879271 AbsIntAvgWeakeningVarsNumRemoved, 18.10250569476082 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 1364 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1729 NumberOfCodeBlocks, 1729 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1720 ConstructedInterpolants, 0 QuantifiedInterpolants, 1308337 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 629/973 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown