java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label06_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:57:31,641 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:57:31,643 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:57:31,655 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:57:31,656 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:57:31,657 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:57:31,658 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:57:31,660 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:57:31,662 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:57:31,662 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:57:31,663 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:57:31,664 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:57:31,665 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:57:31,666 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:57:31,667 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:57:31,668 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:57:31,669 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:57:31,670 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:57:31,672 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:57:31,674 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:57:31,675 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:57:31,676 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:57:31,679 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:57:31,679 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:57:31,679 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:57:31,680 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:57:31,682 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:57:31,682 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:57:31,684 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:57:31,685 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:57:31,685 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:57:31,686 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:57:31,686 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:57:31,686 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:57:31,687 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:57:31,688 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:57:31,689 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:57:31,705 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:57:31,705 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:57:31,706 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:57:31,706 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:57:31,706 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:57:31,707 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:57:31,707 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:57:31,707 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:57:31,707 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:57:31,707 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:57:31,708 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:57:31,708 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:57:31,708 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:57:31,709 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:57:31,709 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:57:31,709 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:57:31,709 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:57:31,709 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:57:31,710 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:57:31,710 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:57:31,710 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:57:31,710 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:57:31,711 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:57:31,711 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:57:31,711 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:57:31,711 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:57:31,711 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:57:31,712 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:57:31,712 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:57:31,712 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:57:31,712 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:57:31,712 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:57:31,713 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:57:31,713 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:57:31,784 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:57:31,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:57:31,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:57:31,804 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:57:31,804 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:57:31,805 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label06_false-unreach-call.c [2018-10-24 18:57:31,870 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/20dfe9034/b99204d7926a459daeba8364f7b3ad9c/FLAGd9e03ce0b [2018-10-24 18:57:32,621 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:57:32,623 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label06_false-unreach-call.c [2018-10-24 18:57:32,653 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/20dfe9034/b99204d7926a459daeba8364f7b3ad9c/FLAGd9e03ce0b [2018-10-24 18:57:32,674 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/20dfe9034/b99204d7926a459daeba8364f7b3ad9c [2018-10-24 18:57:32,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:57:32,692 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:57:32,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:57:32,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:57:32,701 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:57:32,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:57:32" (1/1) ... [2018-10-24 18:57:32,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:32, skipping insertion in model container [2018-10-24 18:57:32,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:57:32" (1/1) ... [2018-10-24 18:57:32,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:57:32,866 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:57:33,868 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:57:33,872 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:57:34,346 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:57:34,372 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:57:34,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34 WrapperNode [2018-10-24 18:57:34,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:57:34,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:57:34,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:57:34,374 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:57:34,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (1/1) ... [2018-10-24 18:57:34,436 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (1/1) ... [2018-10-24 18:57:34,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:57:34,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:57:34,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:57:34,851 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:57:34,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (1/1) ... [2018-10-24 18:57:34,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (1/1) ... [2018-10-24 18:57:34,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (1/1) ... [2018-10-24 18:57:34,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (1/1) ... [2018-10-24 18:57:34,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (1/1) ... [2018-10-24 18:57:35,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (1/1) ... [2018-10-24 18:57:35,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (1/1) ... [2018-10-24 18:57:35,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:57:35,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:57:35,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:57:35,066 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:57:35,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:57:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:57:35,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:57:35,143 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:57:35,143 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:57:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:57:35,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:57:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:57:35,144 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:57:35,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:57:35,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:57:35,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:57:35,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:57:42,811 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:57:42,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:57:42 BoogieIcfgContainer [2018-10-24 18:57:42,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:57:42,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:57:42,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:57:42,817 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:57:42,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:57:32" (1/3) ... [2018-10-24 18:57:42,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb0b389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:57:42, skipping insertion in model container [2018-10-24 18:57:42,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:34" (2/3) ... [2018-10-24 18:57:42,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cb0b389 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:57:42, skipping insertion in model container [2018-10-24 18:57:42,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:57:42" (3/3) ... [2018-10-24 18:57:42,821 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label06_false-unreach-call.c [2018-10-24 18:57:42,831 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:57:42,841 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:57:42,859 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:57:42,911 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:57:42,911 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:57:42,911 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:57:42,911 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:57:42,912 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:57:42,912 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:57:42,912 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:57:42,912 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:57:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 18:57:42,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-24 18:57:42,971 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:42,973 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] [2018-10-24 18:57:42,975 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:42,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:42,981 INFO L82 PathProgramCache]: Analyzing trace with hash 396758956, now seen corresponding path program 1 times [2018-10-24 18:57:42,984 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:43,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:43,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:43,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:43,034 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:43,427 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:57:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:57:43,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:43,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:57:43,542 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:43,548 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:57:43,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:57:43,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:57:43,566 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 18:57:50,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:57:50,468 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 18:57:50,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:57:50,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-10-24 18:57:50,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:57:50,508 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 18:57:50,509 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 18:57:50,522 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:57:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 18:57:50,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 18:57:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 18:57:50,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-10-24 18:57:50,671 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 32 [2018-10-24 18:57:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:57:50,672 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-10-24 18:57:50,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:57:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-10-24 18:57:50,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 18:57:50,680 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:50,681 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:57:50,682 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:50,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:50,682 INFO L82 PathProgramCache]: Analyzing trace with hash 642583282, now seen corresponding path program 1 times [2018-10-24 18:57:50,682 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:50,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:50,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:50,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:50,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:57:50,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:50,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:57:50,977 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:50,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:57:50,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:57:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:57:50,980 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-10-24 18:58:02,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:02,378 INFO L93 Difference]: Finished difference Result 5789 states and 11192 transitions. [2018-10-24 18:58:02,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:58:02,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2018-10-24 18:58:02,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:02,411 INFO L225 Difference]: With dead ends: 5789 [2018-10-24 18:58:02,412 INFO L226 Difference]: Without dead ends: 4321 [2018-10-24 18:58:02,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:58:02,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2018-10-24 18:58:02,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4295. [2018-10-24 18:58:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4295 states. [2018-10-24 18:58:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4295 states to 4295 states and 7032 transitions. [2018-10-24 18:58:02,562 INFO L78 Accepts]: Start accepts. Automaton has 4295 states and 7032 transitions. Word has length 106 [2018-10-24 18:58:02,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:02,562 INFO L481 AbstractCegarLoop]: Abstraction has 4295 states and 7032 transitions. [2018-10-24 18:58:02,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:58:02,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4295 states and 7032 transitions. [2018-10-24 18:58:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-10-24 18:58:02,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:02,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:58:02,569 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:02,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:02,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1007584981, now seen corresponding path program 1 times [2018-10-24 18:58:02,569 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:02,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:02,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:02,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:02,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:02,731 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:02,732 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:02,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:58:02,732 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:02,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:58:02,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:58:02,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:58:02,733 INFO L87 Difference]: Start difference. First operand 4295 states and 7032 transitions. Second operand 5 states. [2018-10-24 18:58:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:15,460 INFO L93 Difference]: Finished difference Result 14323 states and 23451 transitions. [2018-10-24 18:58:15,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:58:15,467 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2018-10-24 18:58:15,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:15,518 INFO L225 Difference]: With dead ends: 14323 [2018-10-24 18:58:15,518 INFO L226 Difference]: Without dead ends: 10034 [2018-10-24 18:58:15,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:58:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10034 states. [2018-10-24 18:58:15,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10034 to 9930. [2018-10-24 18:58:15,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9930 states. [2018-10-24 18:58:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9930 states to 9930 states and 14563 transitions. [2018-10-24 18:58:15,839 INFO L78 Accepts]: Start accepts. Automaton has 9930 states and 14563 transitions. Word has length 109 [2018-10-24 18:58:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:15,840 INFO L481 AbstractCegarLoop]: Abstraction has 9930 states and 14563 transitions. [2018-10-24 18:58:15,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:58:15,840 INFO L276 IsEmpty]: Start isEmpty. Operand 9930 states and 14563 transitions. [2018-10-24 18:58:15,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 18:58:15,850 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:15,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:58:15,853 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:15,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:15,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2115491697, now seen corresponding path program 1 times [2018-10-24 18:58:15,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:15,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:15,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:15,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:15,857 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:58:16,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:58:16,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:58:16,098 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:16,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:58:16,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:58:16,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:58:16,099 INFO L87 Difference]: Start difference. First operand 9930 states and 14563 transitions. Second operand 4 states. [2018-10-24 18:58:23,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:58:23,877 INFO L93 Difference]: Finished difference Result 29905 states and 46811 transitions. [2018-10-24 18:58:23,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:58:23,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 139 [2018-10-24 18:58:23,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:58:23,957 INFO L225 Difference]: With dead ends: 29905 [2018-10-24 18:58:23,958 INFO L226 Difference]: Without dead ends: 19981 [2018-10-24 18:58:23,993 INFO L605 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 [2018-10-24 18:58:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19981 states. [2018-10-24 18:58:24,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19981 to 19978. [2018-10-24 18:58:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19978 states. [2018-10-24 18:58:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19978 states to 19978 states and 29097 transitions. [2018-10-24 18:58:24,421 INFO L78 Accepts]: Start accepts. Automaton has 19978 states and 29097 transitions. Word has length 139 [2018-10-24 18:58:24,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:58:24,422 INFO L481 AbstractCegarLoop]: Abstraction has 19978 states and 29097 transitions. [2018-10-24 18:58:24,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:58:24,422 INFO L276 IsEmpty]: Start isEmpty. Operand 19978 states and 29097 transitions. [2018-10-24 18:58:24,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-24 18:58:24,427 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:58:24,427 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:58:24,428 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:58:24,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:24,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1955458851, now seen corresponding path program 1 times [2018-10-24 18:58:24,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:58:24,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:24,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:24,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:58:24,433 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:58:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:24,736 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:58:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 50 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:58:24,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:58:24,957 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:58:24,958 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-10-24 18:58:24,960 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1779], [1781], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 18:58:25,036 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:58:25,036 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:58:26,573 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:58:26,575 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:58:26,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:26,584 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:58:28,036 INFO L232 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 77.76% of their original sizes. [2018-10-24 18:58:28,036 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:58:28,462 INFO L413 sIntCurrentIteration]: We have 178 unified AI predicates [2018-10-24 18:58:28,462 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:58:28,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:58:28,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-24 18:58:28,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:28,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:58:28,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:58:28,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:58:28,465 INFO L87 Difference]: Start difference. First operand 19978 states and 29097 transitions. Second operand 7 states. [2018-10-24 18:58:31,725 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:59:15,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:59:15,096 INFO L93 Difference]: Finished difference Result 40655 states and 59109 transitions. [2018-10-24 18:59:15,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:59:15,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 179 [2018-10-24 18:59:15,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:59:15,168 INFO L225 Difference]: With dead ends: 40655 [2018-10-24 18:59:15,168 INFO L226 Difference]: Without dead ends: 20683 [2018-10-24 18:59:15,210 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 179 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:59:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20683 states. [2018-10-24 18:59:15,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20683 to 20681. [2018-10-24 18:59:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20681 states. [2018-10-24 18:59:15,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20681 states to 20681 states and 29809 transitions. [2018-10-24 18:59:15,607 INFO L78 Accepts]: Start accepts. Automaton has 20681 states and 29809 transitions. Word has length 179 [2018-10-24 18:59:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:59:15,608 INFO L481 AbstractCegarLoop]: Abstraction has 20681 states and 29809 transitions. [2018-10-24 18:59:15,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:59:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 20681 states and 29809 transitions. [2018-10-24 18:59:15,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2018-10-24 18:59:15,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:59:15,619 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:59:15,619 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:59:15,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:59:15,620 INFO L82 PathProgramCache]: Analyzing trace with hash 2147140794, now seen corresponding path program 1 times [2018-10-24 18:59:15,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:59:15,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:59:15,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:59:15,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:59:15,622 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:59:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:59:16,199 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:59:16,411 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:59:16,650 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:59:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 134 proven. 153 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:59:17,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:59:17,139 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:59:17,140 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 367 with the following transitions: [2018-10-24 18:59:17,141 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1779], [1781], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2144], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [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], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 18:59:17,150 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:59:17,151 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:59:30,293 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:59:30,294 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:59:30,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:59:30,301 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:59:35,994 INFO L232 lantSequenceWeakener]: Weakened 74 states. On average, predicates are now at 77.95% of their original sizes. [2018-10-24 18:59:35,995 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:00:25,420 INFO L413 sIntCurrentIteration]: We have 365 unified AI predicates [2018-10-24 19:00:25,421 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:00:25,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:00:25,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-10-24 19:00:25,421 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:00:25,422 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 19:00:25,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 19:00:25,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-10-24 19:00:25,423 INFO L87 Difference]: Start difference. First operand 20681 states and 29809 transitions. Second operand 15 states. Received shutdown request... [2018-10-24 19:01:26,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 19:01:26,635 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:01:26,640 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:01:26,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:01:26 BoogieIcfgContainer [2018-10-24 19:01:26,640 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:01:26,641 INFO L168 Benchmark]: Toolchain (without parser) took 233950.91 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 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 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 19:01:26,642 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. [2018-10-24 19:01:26,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1680.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:26,643 INFO L168 Benchmark]: Boogie Procedure Inliner took 476.44 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 814.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -990.7 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:26,644 INFO L168 Benchmark]: Boogie Preprocessor took 214.37 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:26,645 INFO L168 Benchmark]: RCFGBuilder took 7746.97 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 516.6 MB). Peak memory consumption was 516.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:26,646 INFO L168 Benchmark]: TraceAbstraction took 223827.18 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.9 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 771.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:01:26,651 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 1680.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.0 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 476.44 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 814.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -990.7 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 214.37 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: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7746.97 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 516.6 MB). Peak memory consumption was 516.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223827.18 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.9 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 771.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 84). Cancelled while BasicCegarLoop was constructing difference of abstraction (20681states) and FLOYD_HOARE automaton (currently 10 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (193 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 223.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 147.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2616 SDtfs, 10866 SDslu, 657 SDs, 0 SdLazy, 20771 SolverSat, 5416 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 577 GetRequests, 465 SyntacticMatches, 73 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 49.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20681occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.995499372781381 AbsIntWeakeningRatio, 0.10681399631675875 AbsIntAvgWeakeningVarsNumRemoved, 307.1915285451197 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 135 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 931 NumberOfCodeBlocks, 931 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 925 ConstructedInterpolants, 0 QuantifiedInterpolants, 1241752 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 269/487 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown