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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label42_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:11:38,653 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:11:38,656 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:11:38,668 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:11:38,668 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:11:38,669 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:11:38,671 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:11:38,672 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:11:38,676 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:11:38,677 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:11:38,682 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:11:38,682 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:11:38,683 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:11:38,684 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:11:38,685 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:11:38,686 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:11:38,687 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:11:38,689 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:11:38,691 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:11:38,692 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:11:38,694 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:11:38,695 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:11:38,698 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:11:38,698 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:11:38,698 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:11:38,699 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:11:38,702 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:11:38,703 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:11:38,707 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:11:38,708 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:11:38,708 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:11:38,709 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:11:38,709 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:11:38,709 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:11:38,713 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:11:38,714 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:11:38,714 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.epf [2018-11-07 15:11:38,748 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:11:38,748 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:11:38,749 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:11:38,749 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:11:38,752 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:11:38,752 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:11:38,752 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:11:38,753 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:11:38,753 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:11:38,753 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:11:38,753 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:11:38,753 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:11:38,754 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:11:38,755 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:11:38,755 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:11:38,756 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:11:38,756 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:11:38,756 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:11:38,756 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:11:38,756 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:11:38,757 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:11:38,758 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:11:38,758 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:11:38,758 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:11:38,759 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:11:38,759 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:11:38,759 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:11:38,759 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:11:38,759 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:11:38,760 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:11:38,760 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:11:38,760 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:11:38,761 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:11:38,761 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:11:38,827 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:11:38,842 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:11:38,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:11:38,849 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:11:38,849 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:11:38,850 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label42_true-unreach-call.c [2018-11-07 15:11:38,910 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6eba6d2/98a3ceff4b4a42ae8c989eeb8e289ea3/FLAG946dafa5f [2018-11-07 15:11:39,537 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:11:39,538 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label42_true-unreach-call.c [2018-11-07 15:11:39,558 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6eba6d2/98a3ceff4b4a42ae8c989eeb8e289ea3/FLAG946dafa5f [2018-11-07 15:11:39,580 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c6eba6d2/98a3ceff4b4a42ae8c989eeb8e289ea3 [2018-11-07 15:11:39,594 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:11:39,596 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:11:39,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:11:39,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:11:39,603 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:11:39,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:11:39" (1/1) ... [2018-11-07 15:11:39,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2964f187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:39, skipping insertion in model container [2018-11-07 15:11:39,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:11:39" (1/1) ... [2018-11-07 15:11:39,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:11:39,731 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:11:40,551 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:11:40,557 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:11:40,839 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:11:40,859 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:11:40,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40 WrapperNode [2018-11-07 15:11:40,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:11:40,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:11:40,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:11:40,862 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:11:40,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (1/1) ... [2018-11-07 15:11:41,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (1/1) ... [2018-11-07 15:11:41,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:11:41,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:11:41,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:11:41,101 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:11:41,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (1/1) ... [2018-11-07 15:11:41,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (1/1) ... [2018-11-07 15:11:41,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (1/1) ... [2018-11-07 15:11:41,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (1/1) ... [2018-11-07 15:11:41,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (1/1) ... [2018-11-07 15:11:41,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (1/1) ... [2018-11-07 15:11:41,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (1/1) ... [2018-11-07 15:11:41,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:11:41,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:11:41,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:11:41,270 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:11:41,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (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 15:11:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:11:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:11:41,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:11:41,341 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:11:41,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:11:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:11:41,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:11:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:11:41,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:11:41,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:11:41,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:11:49,058 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:11:49,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:11:49 BoogieIcfgContainer [2018-11-07 15:11:49,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:11:49,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:11:49,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:11:49,066 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:11:49,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:11:39" (1/3) ... [2018-11-07 15:11:49,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac4851c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:11:49, skipping insertion in model container [2018-11-07 15:11:49,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:40" (2/3) ... [2018-11-07 15:11:49,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac4851c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:11:49, skipping insertion in model container [2018-11-07 15:11:49,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:11:49" (3/3) ... [2018-11-07 15:11:49,070 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label42_true-unreach-call.c [2018-11-07 15:11:49,082 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:11:49,095 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:11:49,113 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:11:49,169 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:11:49,169 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:11:49,170 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:11:49,170 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:11:49,170 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:11:49,170 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:11:49,170 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:11:49,171 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:11:49,221 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 15:11:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-07 15:11:49,233 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:49,234 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:11:49,239 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:49,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:49,246 INFO L82 PathProgramCache]: Analyzing trace with hash 592671889, now seen corresponding path program 1 times [2018-11-07 15:11:49,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:49,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:49,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:49,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:49,295 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:49,795 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 15:11:49,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:49,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:11:49,798 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:49,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:11:49,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:11:49,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:49,823 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 15:11:56,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:11:56,683 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 15:11:56,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:11:56,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-11-07 15:11:56,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:11:56,712 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 15:11:56,712 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 15:11:56,723 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:11:56,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 15:11:56,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-11-07 15:11:56,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-11-07 15:11:56,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-11-07 15:11:56,858 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 53 [2018-11-07 15:11:56,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:11:56,859 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-11-07 15:11:56,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:11:56,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-11-07 15:11:56,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 15:11:56,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:11:56,874 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:11:56,874 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:11:56,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:11:56,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1626960388, now seen corresponding path program 1 times [2018-11-07 15:11:56,874 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:11:56,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:56,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:11:56,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:11:56,876 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:11:56,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:11:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:11:57,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:11:57,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:11:57,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:11:57,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:11:57,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:11:57,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:11:57,142 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-11-07 15:12:02,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:12:02,449 INFO L93 Difference]: Finished difference Result 3246 states and 5588 transitions. [2018-11-07 15:12:02,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:12:02,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2018-11-07 15:12:02,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:12:02,477 INFO L225 Difference]: With dead ends: 3246 [2018-11-07 15:12:02,477 INFO L226 Difference]: Without dead ends: 2161 [2018-11-07 15:12:02,483 INFO L604 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 [2018-11-07 15:12:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2018-11-07 15:12:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2114. [2018-11-07 15:12:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-11-07 15:12:02,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-11-07 15:12:02,582 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 126 [2018-11-07 15:12:02,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:12:02,583 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-11-07 15:12:02,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:12:02,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-11-07 15:12:02,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 15:12:02,592 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:12:02,594 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:12:02,594 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:12:02,594 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:12:02,594 INFO L82 PathProgramCache]: Analyzing trace with hash 108586508, now seen corresponding path program 1 times [2018-11-07 15:12:02,594 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:12:02,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:12:02,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:12:02,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:12:02,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:12:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:12:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:12:02,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:12:02,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:12:02,855 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:12:02,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:12:02,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:12:02,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:12:02,856 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-11-07 15:12:08,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:12:08,009 INFO L93 Difference]: Finished difference Result 7944 states and 12441 transitions. [2018-11-07 15:12:08,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:12:08,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-11-07 15:12:08,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:12:08,051 INFO L225 Difference]: With dead ends: 7944 [2018-11-07 15:12:08,051 INFO L226 Difference]: Without dead ends: 5836 [2018-11-07 15:12:08,076 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:12:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2018-11-07 15:12:08,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5834. [2018-11-07 15:12:08,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2018-11-07 15:12:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8173 transitions. [2018-11-07 15:12:08,249 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8173 transitions. Word has length 134 [2018-11-07 15:12:08,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:12:08,250 INFO L480 AbstractCegarLoop]: Abstraction has 5834 states and 8173 transitions. [2018-11-07 15:12:08,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:12:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8173 transitions. [2018-11-07 15:12:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-11-07 15:12:08,262 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:12:08,262 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:12:08,263 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:12:08,263 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:12:08,263 INFO L82 PathProgramCache]: Analyzing trace with hash 2141238506, now seen corresponding path program 1 times [2018-11-07 15:12:08,263 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:12:08,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:12:08,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:12:08,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:12:08,264 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:12:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:12:08,561 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:12:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 92 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:12:08,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:12:08,967 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:12:08,968 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-11-07 15:12:08,970 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [397], [399], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 15:12:09,019 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:12:09,019 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:12:09,544 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:12:09,546 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:12:09,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:12:09,582 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:12:10,085 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 78% of their original sizes. [2018-11-07 15:12:10,086 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:12:10,519 INFO L415 sIntCurrentIteration]: We unified 222 AI predicates to 222 [2018-11-07 15:12:10,520 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:12:10,521 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:12:10,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 15:12:10,521 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:12:10,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 15:12:10,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 15:12:10,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:12:10,524 INFO L87 Difference]: Start difference. First operand 5834 states and 8173 transitions. Second operand 8 states. [2018-11-07 15:12:13,537 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown