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/Problem02_label30_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:24:51,072 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:24:51,074 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:24:51,097 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:24:51,097 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:24:51,099 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:24:51,102 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:24:51,106 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:24:51,109 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:24:51,111 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:24:51,112 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:24:51,112 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:24:51,115 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:24:51,116 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:24:51,117 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:24:51,117 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:24:51,126 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:24:51,129 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:24:51,131 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:24:51,133 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:24:51,135 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:24:51,136 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:24:51,141 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:24:51,154 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 [2018-10-23 23:24:51,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:24:51,181 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:24:51,182 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:24:51,182 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:24:51,182 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:24:51,182 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:24:51,183 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:24:51,183 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:24:51,183 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:24:51,183 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:24:51,183 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:24:51,183 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:24:51,184 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:24:51,184 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:24:51,184 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:24:51,188 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:24:51,188 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:24:51,188 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:24:51,188 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:24:51,189 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:24:51,189 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:24:51,189 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:24:51,189 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:24:51,189 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:24:51,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:24:51,190 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:24:51,190 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:24:51,190 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:24:51,191 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:24:51,191 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:24:51,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:24:51,191 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:24:51,191 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:24:51,191 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:24:51,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:24:51,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:24:51,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:24:51,275 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:24:51,275 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:24:51,276 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label30_true-unreach-call_false-termination.c [2018-10-23 23:24:51,335 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4183043e7/504cfcc80548463484d2f781fa980347/FLAGe43affdfe [2018-10-23 23:24:51,972 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:24:51,977 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label30_true-unreach-call_false-termination.c [2018-10-23 23:24:52,000 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4183043e7/504cfcc80548463484d2f781fa980347/FLAGe43affdfe [2018-10-23 23:24:52,014 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4183043e7/504cfcc80548463484d2f781fa980347 [2018-10-23 23:24:52,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:24:52,027 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:24:52,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:24:52,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:24:52,032 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:24:52,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:52,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86a12f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52, skipping insertion in model container [2018-10-23 23:24:52,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:52,047 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:24:52,105 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:24:52,607 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:24:52,614 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:24:52,723 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:24:52,745 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:24:52,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52 WrapperNode [2018-10-23 23:24:52,746 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:24:52,747 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:24:52,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:24:52,748 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:24:52,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:52,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:52,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:24:52,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:24:52,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:24:52,941 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:24:52,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:52,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:52,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:52,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:52,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:53,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:53,019 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (1/1) ... [2018-10-23 23:24:53,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:24:53,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:24:53,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:24:53,033 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:24:53,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (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 [2018-10-23 23:24:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:24:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:24:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:24:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:24:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:24:53,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:24:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:24:53,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:24:56,566 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:24:56,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:24:56 BoogieIcfgContainer [2018-10-23 23:24:56,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:24:56,571 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:24:56,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:24:56,579 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:24:56,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:24:52" (1/3) ... [2018-10-23 23:24:56,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0915ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:24:56, skipping insertion in model container [2018-10-23 23:24:56,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:24:52" (2/3) ... [2018-10-23 23:24:56,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f0915ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:24:56, skipping insertion in model container [2018-10-23 23:24:56,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:24:56" (3/3) ... [2018-10-23 23:24:56,584 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label30_true-unreach-call_false-termination.c [2018-10-23 23:24:56,596 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:24:56,612 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:24:56,633 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:24:56,684 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:24:56,684 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:24:56,685 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:24:56,685 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:24:56,685 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:24:56,685 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:24:56,686 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:24:56,686 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:24:56,724 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:24:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-23 23:24:56,739 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:24:56,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:24:56,744 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:24:56,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:24:56,750 INFO L82 PathProgramCache]: Analyzing trace with hash -564012609, now seen corresponding path program 1 times [2018-10-23 23:24:56,753 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:24:56,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:24:56,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:24:56,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:24:56,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:24:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:24:57,398 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:24:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:24:57,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:24:57,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:24:57,569 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:24:57,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:24:57,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:24:57,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:24:57,603 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:24:59,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:24:59,580 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-23 23:24:59,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:24:59,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2018-10-23 23:24:59,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:24:59,606 INFO L225 Difference]: With dead ends: 618 [2018-10-23 23:24:59,606 INFO L226 Difference]: Without dead ends: 379 [2018-10-23 23:24:59,613 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 [2018-10-23 23:24:59,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-23 23:24:59,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-23 23:24:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-23 23:24:59,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-23 23:24:59,693 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 135 [2018-10-23 23:24:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:24:59,695 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-23 23:24:59,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:24:59,695 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-23 23:24:59,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-23 23:24:59,702 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:24:59,702 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:24:59,703 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:24:59,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:24:59,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1268148278, now seen corresponding path program 1 times [2018-10-23 23:24:59,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:24:59,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:24:59,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:24:59,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:24:59,705 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:24:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:24:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:24:59,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:24:59,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:24:59,994 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:24:59,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:24:59,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:24:59,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:24:59,998 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-23 23:25:02,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:25:02,151 INFO L93 Difference]: Finished difference Result 1231 states and 2094 transitions. [2018-10-23 23:25:02,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 23:25:02,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-23 23:25:02,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:25:02,178 INFO L225 Difference]: With dead ends: 1231 [2018-10-23 23:25:02,178 INFO L226 Difference]: Without dead ends: 858 [2018-10-23 23:25:02,185 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 [2018-10-23 23:25:02,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2018-10-23 23:25:02,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 821. [2018-10-23 23:25:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2018-10-23 23:25:02,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1290 transitions. [2018-10-23 23:25:02,253 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1290 transitions. Word has length 151 [2018-10-23 23:25:02,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:25:02,254 INFO L481 AbstractCegarLoop]: Abstraction has 821 states and 1290 transitions. [2018-10-23 23:25:02,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:25:02,254 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1290 transitions. [2018-10-23 23:25:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-23 23:25:02,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:25:02,260 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:25:02,261 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:25:02,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:25:02,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1898018613, now seen corresponding path program 1 times [2018-10-23 23:25:02,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:25:02,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:25:02,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:25:02,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:25:02,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:25:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:25:02,554 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:25:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:25:02,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:25:02,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:25:02,891 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:25:02,892 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:25:02,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:25:02,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:25:02,893 INFO L87 Difference]: Start difference. First operand 821 states and 1290 transitions. Second operand 6 states. [2018-10-23 23:25:07,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:25:07,256 INFO L93 Difference]: Finished difference Result 2553 states and 4218 transitions. [2018-10-23 23:25:07,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:25:07,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-23 23:25:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:25:07,278 INFO L225 Difference]: With dead ends: 2553 [2018-10-23 23:25:07,278 INFO L226 Difference]: Without dead ends: 1738 [2018-10-23 23:25:07,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:25:07,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-10-23 23:25:07,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1680. [2018-10-23 23:25:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1680 states. [2018-10-23 23:25:07,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1680 states to 1680 states and 2538 transitions. [2018-10-23 23:25:07,384 INFO L78 Accepts]: Start accepts. Automaton has 1680 states and 2538 transitions. Word has length 158 [2018-10-23 23:25:07,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:25:07,384 INFO L481 AbstractCegarLoop]: Abstraction has 1680 states and 2538 transitions. [2018-10-23 23:25:07,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:25:07,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1680 states and 2538 transitions. [2018-10-23 23:25:07,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-23 23:25:07,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:25:07,397 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:25:07,397 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:25:07,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:25:07,398 INFO L82 PathProgramCache]: Analyzing trace with hash -622646755, now seen corresponding path program 1 times [2018-10-23 23:25:07,398 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:25:07,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:25:07,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:25:07,400 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:25:07,400 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:25:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:25:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 23:25:07,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:25:07,647 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:25:07,647 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 161 with the following transitions: [2018-10-23 23:25:07,650 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [751], [753], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:25:07,746 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:25:07,747 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:25:22,207 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:25:22,210 INFO L272 AbstractInterpreter]: Visited 136 different actions 136 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-23 23:25:22,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:25:22,222 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:25:26,114 INFO L232 lantSequenceWeakener]: Weakened 139 states. On average, predicates are now at 81.64% of their original sizes. [2018-10-23 23:25:26,115 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:25:29,388 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:25:29,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:25:29,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-23 23:25:29,390 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:25:29,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 23:25:29,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 23:25:29,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-10-23 23:25:29,391 INFO L87 Difference]: Start difference. First operand 1680 states and 2538 transitions. Second operand 13 states. [2018-10-23 23:26:53,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:26:53,612 INFO L93 Difference]: Finished difference Result 3652 states and 5496 transitions. [2018-10-23 23:26:53,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:26:53,612 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 160 [2018-10-23 23:26:53,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:26:53,623 INFO L225 Difference]: With dead ends: 3652 [2018-10-23 23:26:53,624 INFO L226 Difference]: Without dead ends: 1978 [2018-10-23 23:26:53,630 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 170 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2018-10-23 23:26:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2018-10-23 23:26:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 1825. [2018-10-23 23:26:53,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1825 states. [2018-10-23 23:26:53,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 2690 transitions. [2018-10-23 23:26:53,802 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 2690 transitions. Word has length 160 [2018-10-23 23:26:53,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:26:53,803 INFO L481 AbstractCegarLoop]: Abstraction has 1825 states and 2690 transitions. [2018-10-23 23:26:53,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 23:26:53,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 2690 transitions. [2018-10-23 23:26:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-23 23:26:53,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:26:53,813 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:26:53,813 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:26:53,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:26:53,814 INFO L82 PathProgramCache]: Analyzing trace with hash 9901054, now seen corresponding path program 1 times [2018-10-23 23:26:53,814 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:26:53,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:53,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:26:53,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:26:53,815 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:26:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:26:54,239 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 23:26:54,240 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:26:54,240 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:26:54,240 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2018-10-23 23:26:54,241 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [751], [753], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:26:54,248 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:26:54,248 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:28:13,188 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:28:13,188 INFO L272 AbstractInterpreter]: Visited 140 different actions 548 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-23 23:28:13,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:28:13,194 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:28:24,103 INFO L232 lantSequenceWeakener]: Weakened 50 states. On average, predicates are now at 83.1% of their original sizes. [2018-10-23 23:28:24,103 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 23:29:01,698 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:29:01,704 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:29:01,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:29:01 BoogieIcfgContainer [2018-10-23 23:29:01,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:29:01,705 INFO L168 Benchmark]: Toolchain (without parser) took 249679.37 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 23:29:01,707 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:29:01,707 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:29:01,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 193.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2018-10-23 23:29:01,709 INFO L168 Benchmark]: Boogie Preprocessor took 91.50 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:29:01,710 INFO L168 Benchmark]: RCFGBuilder took 3537.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.4 MB). Peak memory consumption was 104.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:29:01,711 INFO L168 Benchmark]: TraceAbstraction took 245132.98 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -677.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:29:01,716 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 193.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -807.6 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.50 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3537.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.4 MB). Peak memory consumption was 104.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245132.98 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.7 GB in the end (delta: -677.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 556]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 556). Cancelled while BasicCegarLoop was analyzing trace of length 171 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 20 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 245.0s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 92.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 649 SDtfs, 3089 SDslu, 528 SDs, 0 SdLazy, 2774 SolverSat, 685 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 195 GetRequests, 154 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1825occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 93.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9941908371786415 AbsIntWeakeningRatio, 0.21951219512195122 AbsIntAvgWeakeningVarsNumRemoved, 1207.5243902439024 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 248 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 604 NumberOfCodeBlocks, 604 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 600 ConstructedInterpolants, 0 QuantifiedInterpolants, 196356 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 59/61 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown