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_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:18:15,662 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:18:15,665 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:18:15,683 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:18:15,683 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:18:15,685 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:18:15,686 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:18:15,688 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:18:15,689 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:18:15,690 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:18:15,691 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:18:15,691 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:18:15,692 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:18:15,693 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:18:15,694 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:18:15,695 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:18:15,696 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:18:15,698 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:18:15,700 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:18:15,702 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:18:15,703 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:18:15,704 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:18:15,706 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:18:15,722 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 21:18:15,737 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:18:15,738 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:18:15,738 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:18:15,739 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:18:15,739 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:18:15,739 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:18:15,739 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:18:15,739 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:18:15,740 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:18:15,740 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:18:15,740 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:18:15,740 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:18:15,741 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:18:15,741 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:18:15,741 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:18:15,741 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:18:15,742 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:18:15,742 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:18:15,742 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:18:15,742 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:18:15,742 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:18:15,743 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:18:15,743 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:18:15,743 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:18:15,743 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:18:15,743 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:18:15,743 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:18:15,748 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:18:15,748 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:18:15,748 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:18:15,748 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:18:15,749 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:18:15,749 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:18:15,749 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:18:15,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:18:15,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:18:15,831 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:18:15,832 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:18:15,833 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:18:15,833 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-10-24 21:18:15,898 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea9035f31/f7d59b151b1b419d80d0224ef6759df5/FLAG6905d912d [2018-10-24 21:18:16,634 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:18:16,635 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-10-24 21:18:16,676 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea9035f31/f7d59b151b1b419d80d0224ef6759df5/FLAG6905d912d [2018-10-24 21:18:16,699 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ea9035f31/f7d59b151b1b419d80d0224ef6759df5 [2018-10-24 21:18:16,713 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:18:16,715 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:18:16,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:18:16,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:18:16,724 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:18:16,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:18:16" (1/1) ... [2018-10-24 21:18:16,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2874412b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:16, skipping insertion in model container [2018-10-24 21:18:16,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:18:16" (1/1) ... [2018-10-24 21:18:16,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:18:16,898 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:18:18,276 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:18:18,282 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:18:18,959 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:18:18,992 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:18:18,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18 WrapperNode [2018-10-24 21:18:18,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:18:18,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:18:18,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:18:18,994 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:18:19,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (1/1) ... [2018-10-24 21:18:19,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (1/1) ... [2018-10-24 21:18:19,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:18:19,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:18:19,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:18:19,497 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:18:19,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (1/1) ... [2018-10-24 21:18:19,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (1/1) ... [2018-10-24 21:18:19,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (1/1) ... [2018-10-24 21:18:19,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (1/1) ... [2018-10-24 21:18:19,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (1/1) ... [2018-10-24 21:18:19,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (1/1) ... [2018-10-24 21:18:19,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (1/1) ... [2018-10-24 21:18:19,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:18:19,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:18:19,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:18:19,760 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:18:19,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (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 21:18:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:18:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:18:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:18:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:18:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:18:19,834 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:18:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:18:19,834 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:18:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:18:19,835 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:18:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:18:19,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:18:19,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:18:19,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:18:31,229 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:18:31,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:18:31 BoogieIcfgContainer [2018-10-24 21:18:31,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:18:31,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:18:31,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:18:31,235 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:18:31,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:18:16" (1/3) ... [2018-10-24 21:18:31,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9e6de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:18:31, skipping insertion in model container [2018-10-24 21:18:31,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:18:18" (2/3) ... [2018-10-24 21:18:31,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e9e6de1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:18:31, skipping insertion in model container [2018-10-24 21:18:31,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:18:31" (3/3) ... [2018-10-24 21:18:31,239 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label09_true-unreach-call.c [2018-10-24 21:18:31,249 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:18:31,259 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:18:31,278 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:18:31,326 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:18:31,326 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:18:31,326 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:18:31,326 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:18:31,326 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:18:31,327 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:18:31,327 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:18:31,327 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:18:31,374 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:18:31,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-24 21:18:31,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:31,386 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:18:31,388 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:31,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash -539031517, now seen corresponding path program 1 times [2018-10-24 21:18:31,397 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:31,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:31,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:31,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:31,447 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:31,961 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:18:32,091 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 21:18:32,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:32,094 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:18:32,095 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:32,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:18:32,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:18:32,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:18:32,123 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:18:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:18:39,273 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:18:39,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:18:39,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-10-24 21:18:39,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:18:39,327 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:18:39,327 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:18:39,344 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 21:18:39,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:18:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:18:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:18:39,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-24 21:18:39,516 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 73 [2018-10-24 21:18:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:18:39,517 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-24 21:18:39,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:18:39,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-24 21:18:39,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 21:18:39,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:39,526 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, 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 21:18:39,526 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:39,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:39,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1174971868, now seen corresponding path program 1 times [2018-10-24 21:18:39,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:39,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:39,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:39,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:39,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:39,890 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:18:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:18:39,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:39,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:18:39,993 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:39,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:18:39,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:18:39,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:18:39,996 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-24 21:18:50,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:18:50,678 INFO L93 Difference]: Finished difference Result 4038 states and 7427 transitions. [2018-10-24 21:18:50,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:18:50,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2018-10-24 21:18:50,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:18:50,697 INFO L225 Difference]: With dead ends: 4038 [2018-10-24 21:18:50,697 INFO L226 Difference]: Without dead ends: 2440 [2018-10-24 21:18:50,704 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:18:50,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2018-10-24 21:18:50,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2413. [2018-10-24 21:18:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2413 states. [2018-10-24 21:18:50,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2413 states to 2413 states and 4141 transitions. [2018-10-24 21:18:50,775 INFO L78 Accepts]: Start accepts. Automaton has 2413 states and 4141 transitions. Word has length 147 [2018-10-24 21:18:50,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:18:50,775 INFO L481 AbstractCegarLoop]: Abstraction has 2413 states and 4141 transitions. [2018-10-24 21:18:50,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:18:50,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2413 states and 4141 transitions. [2018-10-24 21:18:50,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 21:18:50,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:18:50,780 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, 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] [2018-10-24 21:18:50,780 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:18:50,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:18:50,781 INFO L82 PathProgramCache]: Analyzing trace with hash 710506752, now seen corresponding path program 1 times [2018-10-24 21:18:50,781 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:18:50,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:50,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:18:50,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:18:50,782 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:18:50,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:18:50,958 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:18:50,959 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:18:50,959 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:18:50,959 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:18:50,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:18:50,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:18:50,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:18:50,960 INFO L87 Difference]: Start difference. First operand 2413 states and 4141 transitions. Second operand 4 states. [2018-10-24 21:18:59,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:18:59,885 INFO L93 Difference]: Finished difference Result 9492 states and 16758 transitions. [2018-10-24 21:18:59,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:18:59,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 149 [2018-10-24 21:18:59,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:18:59,935 INFO L225 Difference]: With dead ends: 9492 [2018-10-24 21:18:59,936 INFO L226 Difference]: Without dead ends: 7085 [2018-10-24 21:18:59,952 INFO L605 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 [2018-10-24 21:18:59,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2018-10-24 21:19:00,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 7085. [2018-10-24 21:19:00,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7085 states. [2018-10-24 21:19:00,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7085 states to 7085 states and 11755 transitions. [2018-10-24 21:19:00,160 INFO L78 Accepts]: Start accepts. Automaton has 7085 states and 11755 transitions. Word has length 149 [2018-10-24 21:19:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:00,161 INFO L481 AbstractCegarLoop]: Abstraction has 7085 states and 11755 transitions. [2018-10-24 21:19:00,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:19:00,161 INFO L276 IsEmpty]: Start isEmpty. Operand 7085 states and 11755 transitions. [2018-10-24 21:19:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-24 21:19:00,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:00,170 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, 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] [2018-10-24 21:19:00,175 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:00,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:00,175 INFO L82 PathProgramCache]: Analyzing trace with hash 2064727429, now seen corresponding path program 1 times [2018-10-24 21:19:00,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:00,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:00,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:00,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:00,177 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:00,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:19:00,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:19:00,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:19:00,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:19:00,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:19:00,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:19:00,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:19:00,425 INFO L87 Difference]: Start difference. First operand 7085 states and 11755 transitions. Second operand 6 states. [2018-10-24 21:19:07,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:19:07,256 INFO L93 Difference]: Finished difference Result 16634 states and 27837 transitions. [2018-10-24 21:19:07,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:19:07,257 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-10-24 21:19:07,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:19:07,326 INFO L225 Difference]: With dead ends: 16634 [2018-10-24 21:19:07,326 INFO L226 Difference]: Without dead ends: 9555 [2018-10-24 21:19:07,357 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 21:19:07,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9555 states. [2018-10-24 21:19:07,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9555 to 9513. [2018-10-24 21:19:07,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9513 states. [2018-10-24 21:19:07,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9513 states to 9513 states and 14979 transitions. [2018-10-24 21:19:07,660 INFO L78 Accepts]: Start accepts. Automaton has 9513 states and 14979 transitions. Word has length 176 [2018-10-24 21:19:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:19:07,661 INFO L481 AbstractCegarLoop]: Abstraction has 9513 states and 14979 transitions. [2018-10-24 21:19:07,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:19:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 9513 states and 14979 transitions. [2018-10-24 21:19:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-24 21:19:07,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:19:07,676 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, 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, 1, 1, 1, 1, 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 21:19:07,676 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:19:07,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:07,676 INFO L82 PathProgramCache]: Analyzing trace with hash -907554919, now seen corresponding path program 1 times [2018-10-24 21:19:07,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:19:07,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:07,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:07,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:19:07,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:19:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:07,961 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:19:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 132 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:19:08,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:19:08,149 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:19:08,150 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-10-24 21:19:08,152 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], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2339], [2347], [2351], [2353], [2356], [2361], [2365], [2369], [2373], [2376], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2448], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:19:08,224 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:19:08,225 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:19:10,965 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:19:10,967 INFO L272 AbstractInterpreter]: Visited 97 different actions 97 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:19:10,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:10,978 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:19:13,689 INFO L232 lantSequenceWeakener]: Weakened 231 states. On average, predicates are now at 76.02% of their original sizes. [2018-10-24 21:19:13,690 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:19:14,381 INFO L413 sIntCurrentIteration]: We have 238 unified AI predicates [2018-10-24 21:19:14,382 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:19:14,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:19:14,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 21:19:14,383 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:19:14,384 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:19:14,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:19:14,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:19:14,386 INFO L87 Difference]: Start difference. First operand 9513 states and 14979 transitions. Second operand 8 states. [2018-10-24 21:19:18,011 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:20:59,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:20:59,803 INFO L93 Difference]: Finished difference Result 19790 states and 31161 transitions. [2018-10-24 21:20:59,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:20:59,804 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 239 [2018-10-24 21:20:59,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:20:59,850 INFO L225 Difference]: With dead ends: 19790 [2018-10-24 21:20:59,850 INFO L226 Difference]: Without dead ends: 10283 [2018-10-24 21:20:59,881 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 240 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:20:59,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2018-10-24 21:21:00,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 10281. [2018-10-24 21:21:00,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10281 states. [2018-10-24 21:21:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10281 states to 10281 states and 15760 transitions. [2018-10-24 21:21:00,131 INFO L78 Accepts]: Start accepts. Automaton has 10281 states and 15760 transitions. Word has length 239 [2018-10-24 21:21:00,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:00,131 INFO L481 AbstractCegarLoop]: Abstraction has 10281 states and 15760 transitions. [2018-10-24 21:21:00,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:21:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 10281 states and 15760 transitions. [2018-10-24 21:21:00,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-10-24 21:21:00,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:00,147 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:00,147 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:00,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:00,148 INFO L82 PathProgramCache]: Analyzing trace with hash 851544685, now seen corresponding path program 1 times [2018-10-24 21:21:00,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:00,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:00,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:00,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:00,149 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 135 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:21:00,915 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:21:00,915 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:21:00,915 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 298 with the following transitions: [2018-10-24 21:21:00,916 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], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2339], [2347], [2351], [2353], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2672], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:21:00,944 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:21:00,944 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:21:16,465 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:21:16,465 INFO L272 AbstractInterpreter]: Visited 156 different actions 306 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 21:21:16,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:16,489 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:21:20,902 INFO L232 lantSequenceWeakener]: Weakened 136 states. On average, predicates are now at 77.04% of their original sizes. [2018-10-24 21:21:20,902 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:21:29,962 INFO L413 sIntCurrentIteration]: We have 296 unified AI predicates [2018-10-24 21:21:29,963 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:21:29,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:21:29,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-24 21:21:29,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:29,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 21:21:29,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 21:21:29,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2018-10-24 21:21:29,964 INFO L87 Difference]: Start difference. First operand 10281 states and 15760 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 21:22:09,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 21:22:09,451 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:22:09,456 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:22:09,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:22:09 BoogieIcfgContainer [2018-10-24 21:22:09,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:22:09,457 INFO L168 Benchmark]: Toolchain (without parser) took 232743.90 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 2.1 GB in the end (delta: -653.7 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:22:09,459 INFO L168 Benchmark]: CDTParser took 0.20 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 21:22:09,459 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2276.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:22:09,460 INFO L168 Benchmark]: Boogie Procedure Inliner took 502.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:22:09,461 INFO L168 Benchmark]: Boogie Preprocessor took 262.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:22:09,462 INFO L168 Benchmark]: RCFGBuilder took 11471.42 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 174.6 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -186.6 MB). Peak memory consumption was 657.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:22:09,463 INFO L168 Benchmark]: TraceAbstraction took 218225.09 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 336.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:22:09,470 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2276.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 502.45 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 262.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11471.42 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 174.6 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -186.6 MB). Peak memory consumption was 657.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218225.09 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 336.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 210]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 210). Cancelled while BasicCegarLoop was constructing difference of abstraction (10281states) and FLOYD_HOARE automaton (currently 15 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (94 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 218.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 178.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2810 SDtfs, 9793 SDslu, 655 SDs, 0 SdLazy, 17118 SolverSat, 4381 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 116.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 571 GetRequests, 519 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10281occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960760587726877 AbsIntWeakeningRatio, 0.10112359550561797 AbsIntAvgWeakeningVarsNumRemoved, 491.9925093632959 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 71 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1081 NumberOfCodeBlocks, 1081 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1075 ConstructedInterpolants, 0 QuantifiedInterpolants, 724971 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 476/612 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown