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/Problem12_label33_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:22:36,673 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:22:36,675 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:22:36,691 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:22:36,693 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:22:36,694 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:22:36,695 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:22:36,698 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:22:36,700 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:22:36,709 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:22:36,710 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:22:36,710 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:22:36,712 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:22:36,715 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:22:36,717 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:22:36,717 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:22:36,718 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:22:36,720 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:22:36,723 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:22:36,726 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:22:36,728 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:22:36,729 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:22:36,731 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:22:36,743 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 21:22:36,773 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:22:36,774 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:22:36,774 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:22:36,775 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:22:36,775 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:22:36,775 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:22:36,776 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:22:36,776 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:22:36,776 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:22:36,776 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:22:36,776 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:22:36,776 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:22:36,777 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:22:36,777 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:22:36,778 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:22:36,779 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:22:36,779 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:22:36,779 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:22:36,779 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:22:36,780 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:22:36,781 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:22:36,781 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:22:36,781 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:22:36,782 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:22:36,782 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:22:36,782 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:22:36,782 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:22:36,782 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:22:36,783 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:22:36,783 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:22:36,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:22:36,783 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:22:36,783 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:22:36,784 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:22:36,853 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:22:36,867 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:22:36,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:22:36,873 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:22:36,873 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:22:36,874 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label33_true-unreach-call.c [2018-10-24 21:22:36,937 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2a6b39d3/ab0f89dc709a4b1d91ef25444abc648c/FLAG1950b36ad [2018-10-24 21:22:37,684 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:22:37,685 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label33_true-unreach-call.c [2018-10-24 21:22:37,718 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2a6b39d3/ab0f89dc709a4b1d91ef25444abc648c/FLAG1950b36ad [2018-10-24 21:22:37,738 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f2a6b39d3/ab0f89dc709a4b1d91ef25444abc648c [2018-10-24 21:22:37,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:22:37,753 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:22:37,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:22:37,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:22:37,762 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:22:37,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:22:37" (1/1) ... [2018-10-24 21:22:37,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31151419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:37, skipping insertion in model container [2018-10-24 21:22:37,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:22:37" (1/1) ... [2018-10-24 21:22:37,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:22:37,955 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:22:39,219 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:22:39,224 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:22:39,827 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:22:39,864 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:22:39,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39 WrapperNode [2018-10-24 21:22:39,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:22:39,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:22:39,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:22:39,866 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:22:39,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (1/1) ... [2018-10-24 21:22:39,933 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (1/1) ... [2018-10-24 21:22:40,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:22:40,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:22:40,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:22:40,339 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:22:40,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (1/1) ... [2018-10-24 21:22:40,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (1/1) ... [2018-10-24 21:22:40,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (1/1) ... [2018-10-24 21:22:40,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (1/1) ... [2018-10-24 21:22:40,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (1/1) ... [2018-10-24 21:22:40,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (1/1) ... [2018-10-24 21:22:40,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (1/1) ... [2018-10-24 21:22:40,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:22:40,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:22:40,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:22:40,627 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:22:40,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (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 21:22:40,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:22:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:22:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:22:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:22:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:22:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:22:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:22:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:22:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:22:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:22:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:22:40,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:22:40,702 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:22:40,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:22:52,145 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:22:52,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:22:52 BoogieIcfgContainer [2018-10-24 21:22:52,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:22:52,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:22:52,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:22:52,151 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:22:52,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:22:37" (1/3) ... [2018-10-24 21:22:52,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb78536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:22:52, skipping insertion in model container [2018-10-24 21:22:52,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:39" (2/3) ... [2018-10-24 21:22:52,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb78536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:22:52, skipping insertion in model container [2018-10-24 21:22:52,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:22:52" (3/3) ... [2018-10-24 21:22:52,154 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label33_true-unreach-call.c [2018-10-24 21:22:52,164 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:22:52,174 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:22:52,192 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:22:52,237 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:22:52,237 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:22:52,237 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:22:52,237 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:22:52,237 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:22:52,238 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:22:52,238 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:22:52,238 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:22:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:22:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-24 21:22:52,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:22:52,302 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, 1, 1, 1] [2018-10-24 21:22:52,306 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:22:52,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:22:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1505698572, now seen corresponding path program 1 times [2018-10-24 21:22:52,318 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:22:52,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:52,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:22:52,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:52,368 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:22:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:22:52,912 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 21:22:52,915 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:22:52,918 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:22:52,918 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:22:52,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:22:52,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:22:52,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:22:52,964 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-24 21:23:09,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:23:09,047 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-24 21:23:09,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:23:09,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-10-24 21:23:09,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:23:09,096 INFO L225 Difference]: With dead ends: 3234 [2018-10-24 21:23:09,096 INFO L226 Difference]: Without dead ends: 2388 [2018-10-24 21:23:09,108 INFO L605 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 [2018-10-24 21:23:09,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-24 21:23:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-10-24 21:23:09,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-10-24 21:23:09,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 4022 transitions. [2018-10-24 21:23:09,277 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 4022 transitions. Word has length 56 [2018-10-24 21:23:09,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:23:09,278 INFO L481 AbstractCegarLoop]: Abstraction has 2388 states and 4022 transitions. [2018-10-24 21:23:09,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:23:09,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 4022 transitions. [2018-10-24 21:23:09,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-24 21:23:09,297 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:23:09,298 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, 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] [2018-10-24 21:23:09,298 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:23:09,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:09,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1233616770, now seen corresponding path program 1 times [2018-10-24 21:23:09,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:23:09,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:09,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:23:09,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:09,301 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:23:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:23:09,687 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:23:09,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:23:09,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:23:09,688 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:23:09,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:23:09,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:23:09,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:23:09,691 INFO L87 Difference]: Start difference. First operand 2388 states and 4022 transitions. Second operand 6 states. [2018-10-24 21:23:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:23:23,469 INFO L93 Difference]: Finished difference Result 9453 states and 16261 transitions. [2018-10-24 21:23:23,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:23:23,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-10-24 21:23:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:23:23,531 INFO L225 Difference]: With dead ends: 9453 [2018-10-24 21:23:23,531 INFO L226 Difference]: Without dead ends: 7071 [2018-10-24 21:23:23,545 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:23:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7071 states. [2018-10-24 21:23:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7071 to 7023. [2018-10-24 21:23:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2018-10-24 21:23:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 10536 transitions. [2018-10-24 21:23:23,763 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 10536 transitions. Word has length 156 [2018-10-24 21:23:23,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:23:23,764 INFO L481 AbstractCegarLoop]: Abstraction has 7023 states and 10536 transitions. [2018-10-24 21:23:23,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:23:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 10536 transitions. [2018-10-24 21:23:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-24 21:23:23,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:23:23,777 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, 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] [2018-10-24 21:23:23,780 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:23:23,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:23,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1668109382, now seen corresponding path program 1 times [2018-10-24 21:23:23,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:23:23,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:23,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:23:23,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:23,782 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:23:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:23:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:23:24,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:23:24,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:23:24,074 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:23:24,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:23:24,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:23:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:23:24,079 INFO L87 Difference]: Start difference. First operand 7023 states and 10536 transitions. Second operand 4 states. [2018-10-24 21:23:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:23:33,567 INFO L93 Difference]: Finished difference Result 27807 states and 43305 transitions. [2018-10-24 21:23:33,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:23:33,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2018-10-24 21:23:33,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:23:33,692 INFO L225 Difference]: With dead ends: 27807 [2018-10-24 21:23:33,693 INFO L226 Difference]: Without dead ends: 20790 [2018-10-24 21:23:33,734 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 21:23:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20790 states. [2018-10-24 21:23:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20790 to 20790. [2018-10-24 21:23:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20790 states. [2018-10-24 21:23:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20790 states to 20790 states and 31085 transitions. [2018-10-24 21:23:34,300 INFO L78 Accepts]: Start accepts. Automaton has 20790 states and 31085 transitions. Word has length 206 [2018-10-24 21:23:34,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:23:34,301 INFO L481 AbstractCegarLoop]: Abstraction has 20790 states and 31085 transitions. [2018-10-24 21:23:34,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:23:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 20790 states and 31085 transitions. [2018-10-24 21:23:34,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-10-24 21:23:34,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:23:34,315 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:23:34,315 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:23:34,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:34,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1323393900, now seen corresponding path program 1 times [2018-10-24 21:23:34,316 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:23:34,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:34,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:23:34,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:34,318 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:23:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:23:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 98 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:23:34,754 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:23:34,754 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:23:34,755 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-10-24 21:23:34,757 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2215], [2217], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2376], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:23:34,837 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:23:34,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:23:36,958 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:23:36,960 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:23:36,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:36,974 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:23:39,096 INFO L232 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 75.82% of their original sizes. [2018-10-24 21:23:39,097 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:23:39,753 INFO L413 sIntCurrentIteration]: We have 209 unified AI predicates [2018-10-24 21:23:39,753 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:23:39,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:23:39,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-24 21:23:39,755 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:23:39,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:23:39,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:23:39,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:23:39,757 INFO L87 Difference]: Start difference. First operand 20790 states and 31085 transitions. Second operand 8 states. [2018-10-24 21:23:46,259 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