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_label09_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:19:06,522 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:19:06,524 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:19:06,537 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:19:06,538 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:19:06,539 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:19:06,540 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:19:06,542 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:19:06,547 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:19:06,548 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:19:06,549 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:19:06,550 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:19:06,550 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:19:06,551 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:19:06,553 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:19:06,559 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:19:06,560 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:19:06,564 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:19:06,569 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:19:06,571 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:19:06,575 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:19:06,577 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:19:06,581 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:19:06,596 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 23:19:06,612 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:19:06,612 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:19:06,613 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:19:06,613 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:19:06,613 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:19:06,614 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:19:06,614 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:19:06,614 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:19:06,614 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:19:06,614 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:19:06,615 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:19:06,615 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:19:06,616 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:19:06,616 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:19:06,616 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:19:06,616 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:19:06,616 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:19:06,617 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:19:06,617 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:19:06,617 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:19:06,617 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:19:06,617 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:19:06,617 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:19:06,618 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:19:06,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:19:06,618 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:19:06,618 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:19:06,618 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:19:06,619 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:19:06,619 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:19:06,619 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:19:06,619 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:19:06,619 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:19:06,620 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:19:06,664 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:19:06,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:19:06,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:19:06,685 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:19:06,685 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:19:06,686 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09_true-unreach-call_false-termination.c [2018-10-23 23:19:06,744 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/96f88c9c5/179b8d0f6ae74b069b6a4ca5cfe50316/FLAGb085609f0 [2018-10-23 23:19:07,282 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:19:07,287 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label09_true-unreach-call_false-termination.c [2018-10-23 23:19:07,313 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/96f88c9c5/179b8d0f6ae74b069b6a4ca5cfe50316/FLAGb085609f0 [2018-10-23 23:19:07,330 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/96f88c9c5/179b8d0f6ae74b069b6a4ca5cfe50316 [2018-10-23 23:19:07,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:19:07,344 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:19:07,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:19:07,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:19:07,350 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:19:07,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:19:07" (1/1) ... [2018-10-23 23:19:07,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bedfbfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:07, skipping insertion in model container [2018-10-23 23:19:07,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:19:07" (1/1) ... [2018-10-23 23:19:07,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:19:07,429 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:19:07,872 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:19:07,877 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:19:08,029 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:19:08,047 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:19:08,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08 WrapperNode [2018-10-23 23:19:08,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:19:08,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:19:08,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:19:08,050 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:19:08,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (1/1) ... [2018-10-23 23:19:08,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (1/1) ... [2018-10-23 23:19:08,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:19:08,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:19:08,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:19:08,263 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:19:08,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (1/1) ... [2018-10-23 23:19:08,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (1/1) ... [2018-10-23 23:19:08,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (1/1) ... [2018-10-23 23:19:08,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (1/1) ... [2018-10-23 23:19:08,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (1/1) ... [2018-10-23 23:19:08,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (1/1) ... [2018-10-23 23:19:08,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (1/1) ... [2018-10-23 23:19:08,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:19:08,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:19:08,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:19:08,351 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:19:08,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (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 23:19:08,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:19:08,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:19:08,433 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:19:08,435 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:19:08,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:19:08,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:19:08,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:19:08,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:19:12,087 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:19:12,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:19:12 BoogieIcfgContainer [2018-10-23 23:19:12,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:19:12,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:19:12,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:19:12,095 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:19:12,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:19:07" (1/3) ... [2018-10-23 23:19:12,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ba61ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:19:12, skipping insertion in model container [2018-10-23 23:19:12,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:08" (2/3) ... [2018-10-23 23:19:12,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ba61ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:19:12, skipping insertion in model container [2018-10-23 23:19:12,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:19:12" (3/3) ... [2018-10-23 23:19:12,100 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label09_true-unreach-call_false-termination.c [2018-10-23 23:19:12,113 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:19:12,124 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:19:12,143 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:19:12,184 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:19:12,185 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:19:12,185 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:19:12,185 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:19:12,185 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:19:12,186 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:19:12,186 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:19:12,186 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:19:12,224 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:19:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-23 23:19:12,245 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:12,246 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] [2018-10-23 23:19:12,249 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:12,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:12,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1669527864, now seen corresponding path program 1 times [2018-10-23 23:19:12,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:12,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:12,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:12,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:12,321 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:12,916 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 23:19:12,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:19:12,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:19:12,919 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:12,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:19:12,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:19:12,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:19:12,948 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:19:14,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:14,528 INFO L93 Difference]: Finished difference Result 627 states and 1072 transitions. [2018-10-23 23:19:14,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:19:14,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2018-10-23 23:19:14,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:14,549 INFO L225 Difference]: With dead ends: 627 [2018-10-23 23:19:14,549 INFO L226 Difference]: Without dead ends: 388 [2018-10-23 23:19:14,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:19:14,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-10-23 23:19:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-10-23 23:19:14,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-10-23 23:19:14,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 619 transitions. [2018-10-23 23:19:14,669 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 619 transitions. Word has length 128 [2018-10-23 23:19:14,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:14,671 INFO L481 AbstractCegarLoop]: Abstraction has 383 states and 619 transitions. [2018-10-23 23:19:14,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:19:14,671 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 619 transitions. [2018-10-23 23:19:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-23 23:19:14,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:14,688 INFO L375 BasicCegarLoop]: trace histogram [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 23:19:14,689 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:14,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:14,691 INFO L82 PathProgramCache]: Analyzing trace with hash -91961275, now seen corresponding path program 1 times [2018-10-23 23:19:14,691 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:14,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:14,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:14,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:14,695 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:15,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:19:15,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:19:15,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:19:15,224 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:15,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:19:15,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:19:15,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:19:15,228 INFO L87 Difference]: Start difference. First operand 383 states and 619 transitions. Second operand 5 states. [2018-10-23 23:19:17,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:17,085 INFO L93 Difference]: Finished difference Result 905 states and 1519 transitions. [2018-10-23 23:19:17,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:19:17,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-10-23 23:19:17,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:17,093 INFO L225 Difference]: With dead ends: 905 [2018-10-23 23:19:17,093 INFO L226 Difference]: Without dead ends: 382 [2018-10-23 23:19:17,103 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:19:17,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-23 23:19:17,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-23 23:19:17,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-23 23:19:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 613 transitions. [2018-10-23 23:19:17,130 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 613 transitions. Word has length 137 [2018-10-23 23:19:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:17,131 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 613 transitions. [2018-10-23 23:19:17,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:19:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 613 transitions. [2018-10-23 23:19:17,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-23 23:19:17,134 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:17,135 INFO L375 BasicCegarLoop]: trace histogram [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 23:19:17,135 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:17,135 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:17,136 INFO L82 PathProgramCache]: Analyzing trace with hash -2004319935, now seen corresponding path program 1 times [2018-10-23 23:19:17,136 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:17,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:17,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:17,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:17,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:19:17,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:19:17,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:19:17,514 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:17,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:19:17,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:19:17,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:19:17,516 INFO L87 Difference]: Start difference. First operand 382 states and 613 transitions. Second operand 6 states. [2018-10-23 23:19:20,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:20,430 INFO L93 Difference]: Finished difference Result 1241 states and 2101 transitions. [2018-10-23 23:19:20,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 23:19:20,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-23 23:19:20,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:20,440 INFO L225 Difference]: With dead ends: 1241 [2018-10-23 23:19:20,440 INFO L226 Difference]: Without dead ends: 865 [2018-10-23 23:19:20,443 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:19:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2018-10-23 23:19:20,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 818. [2018-10-23 23:19:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2018-10-23 23:19:20,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1267 transitions. [2018-10-23 23:19:20,503 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1267 transitions. Word has length 139 [2018-10-23 23:19:20,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:20,503 INFO L481 AbstractCegarLoop]: Abstraction has 818 states and 1267 transitions. [2018-10-23 23:19:20,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:19:20,503 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1267 transitions. [2018-10-23 23:19:20,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-23 23:19:20,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:20,507 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:19:20,508 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:20,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:20,508 INFO L82 PathProgramCache]: Analyzing trace with hash -430858735, now seen corresponding path program 1 times [2018-10-23 23:19:20,508 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:20,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:20,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:20,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:20,510 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:20,957 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 23:19:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:19:21,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:19:21,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 23:19:21,108 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:21,108 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 23:19:21,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 23:19:21,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 23:19:21,109 INFO L87 Difference]: Start difference. First operand 818 states and 1267 transitions. Second operand 7 states. [2018-10-23 23:19:24,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:24,806 INFO L93 Difference]: Finished difference Result 2617 states and 4252 transitions. [2018-10-23 23:19:24,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 23:19:24,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2018-10-23 23:19:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:24,827 INFO L225 Difference]: With dead ends: 2617 [2018-10-23 23:19:24,828 INFO L226 Difference]: Without dead ends: 1805 [2018-10-23 23:19:24,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:19:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2018-10-23 23:19:24,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1800. [2018-10-23 23:19:24,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1800 states. [2018-10-23 23:19:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2733 transitions. [2018-10-23 23:19:24,918 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2733 transitions. Word has length 142 [2018-10-23 23:19:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:24,918 INFO L481 AbstractCegarLoop]: Abstraction has 1800 states and 2733 transitions. [2018-10-23 23:19:24,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 23:19:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2733 transitions. [2018-10-23 23:19:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-23 23:19:24,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:24,930 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 23:19:24,930 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:24,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:24,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1196711489, now seen corresponding path program 1 times [2018-10-23 23:19:24,931 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:24,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:24,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:24,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:24,933 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:25,155 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:19:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:19:25,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:19:25,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:19:25,533 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:25,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:19:25,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:19:25,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:19:25,534 INFO L87 Difference]: Start difference. First operand 1800 states and 2733 transitions. Second operand 6 states. [2018-10-23 23:19:27,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:27,791 INFO L93 Difference]: Finished difference Result 4620 states and 7211 transitions. [2018-10-23 23:19:27,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:19:27,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-10-23 23:19:27,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:27,821 INFO L225 Difference]: With dead ends: 4620 [2018-10-23 23:19:27,822 INFO L226 Difference]: Without dead ends: 2826 [2018-10-23 23:19:27,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:19:27,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2018-10-23 23:19:27,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2779. [2018-10-23 23:19:27,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2779 states. [2018-10-23 23:19:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 4070 transitions. [2018-10-23 23:19:27,955 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 4070 transitions. Word has length 150 [2018-10-23 23:19:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:27,955 INFO L481 AbstractCegarLoop]: Abstraction has 2779 states and 4070 transitions. [2018-10-23 23:19:27,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:19:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 4070 transitions. [2018-10-23 23:19:27,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-23 23:19:27,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:27,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:27,969 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:27,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:27,970 INFO L82 PathProgramCache]: Analyzing trace with hash 443735674, now seen corresponding path program 1 times [2018-10-23 23:19:27,970 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:27,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:27,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:27,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:27,971 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:19:28,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:19:28,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:19:28,410 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:28,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:19:28,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:19:28,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:19:28,411 INFO L87 Difference]: Start difference. First operand 2779 states and 4070 transitions. Second operand 5 states. [2018-10-23 23:19:29,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:29,308 INFO L93 Difference]: Finished difference Result 5671 states and 8370 transitions. [2018-10-23 23:19:29,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:19:29,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2018-10-23 23:19:29,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:29,332 INFO L225 Difference]: With dead ends: 5671 [2018-10-23 23:19:29,332 INFO L226 Difference]: Without dead ends: 2750 [2018-10-23 23:19:29,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:19:29,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2018-10-23 23:19:29,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2750. [2018-10-23 23:19:29,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2750 states. [2018-10-23 23:19:29,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 3975 transitions. [2018-10-23 23:19:29,424 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 3975 transitions. Word has length 155 [2018-10-23 23:19:29,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:29,425 INFO L481 AbstractCegarLoop]: Abstraction has 2750 states and 3975 transitions. [2018-10-23 23:19:29,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:19:29,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 3975 transitions. [2018-10-23 23:19:29,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-23 23:19:29,435 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:29,436 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 23:19:29,436 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:29,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:29,437 INFO L82 PathProgramCache]: Analyzing trace with hash -939036357, now seen corresponding path program 1 times [2018-10-23 23:19:29,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:29,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:29,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:29,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:29,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-23 23:19:29,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:19:29,557 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:19:29,558 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 165 with the following transitions: [2018-10-23 23:19:29,560 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [13], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [83], [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], [695], [697], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:19:29,631 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:19:29,632 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:19:40,973 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:19:40,975 INFO L272 AbstractInterpreter]: Visited 129 different actions 129 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-23 23:19:40,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:40,987 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:19:44,491 INFO L232 lantSequenceWeakener]: Weakened 143 states. On average, predicates are now at 81.5% of their original sizes. [2018-10-23 23:19:44,491 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:19:48,154 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:19:48,155 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:19:48,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [5] total 17 [2018-10-23 23:19:48,155 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:48,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-23 23:19:48,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-23 23:19:48,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-10-23 23:19:48,157 INFO L87 Difference]: Start difference. First operand 2750 states and 3975 transitions. Second operand 14 states. [2018-10-23 23:21:17,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:17,254 INFO L93 Difference]: Finished difference Result 5792 states and 8388 transitions. [2018-10-23 23:21:17,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:21:17,254 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 164 [2018-10-23 23:21:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:17,268 INFO L225 Difference]: With dead ends: 5792 [2018-10-23 23:21:17,268 INFO L226 Difference]: Without dead ends: 3048 [2018-10-23 23:21:17,278 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 174 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2018-10-23 23:21:17,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2018-10-23 23:21:17,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 2895. [2018-10-23 23:21:17,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2895 states. [2018-10-23 23:21:17,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2895 states to 2895 states and 4128 transitions. [2018-10-23 23:21:17,426 INFO L78 Accepts]: Start accepts. Automaton has 2895 states and 4128 transitions. Word has length 164 [2018-10-23 23:21:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:17,426 INFO L481 AbstractCegarLoop]: Abstraction has 2895 states and 4128 transitions. [2018-10-23 23:21:17,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-23 23:21:17,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2895 states and 4128 transitions. [2018-10-23 23:21:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-23 23:21:17,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:17,438 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:21:17,439 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:17,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:17,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1140751716, now seen corresponding path program 1 times [2018-10-23 23:21:17,439 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:17,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:17,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:17,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:17,441 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:17,752 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 50 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-23 23:21:17,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:21:17,752 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:21:17,753 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-10-23 23:21:17,753 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [13], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [83], [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], [695], [697], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:21:17,760 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:21:17,760 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:21:46,573 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:21:46,574 INFO L272 AbstractInterpreter]: Visited 133 different actions 260 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-23 23:21:46,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:46,582 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:21:51,317 INFO L232 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 82.29% of their original sizes. [2018-10-23 23:21:51,317 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 23:23:16,436 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:23:16,440 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:23:16,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:23:16 BoogieIcfgContainer [2018-10-23 23:23:16,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:23:16,442 INFO L168 Benchmark]: Toolchain (without parser) took 249098.90 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 646.9 MB. Max. memory is 7.1 GB. [2018-10-23 23:23:16,443 INFO L168 Benchmark]: CDTParser took 0.22 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 23:23:16,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.77 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 23:23:16,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 212.76 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:23:16,446 INFO L168 Benchmark]: Boogie Preprocessor took 88.37 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 23:23:16,446 INFO L168 Benchmark]: RCFGBuilder took 3737.47 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-23 23:23:16,447 INFO L168 Benchmark]: TraceAbstraction took 244351.06 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 584.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:23:16,452 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 702.77 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 212.76 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.37 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 3737.47 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244351.06 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 3.1 GB in the end (delta: -1.0 GB). Peak memory consumption was 584.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 535]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 535). Cancelled while BasicCegarLoop was analyzing trace of length 175 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, 244.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 102.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 990 SDtfs, 5841 SDslu, 1244 SDs, 0 SdLazy, 6556 SolverSat, 1285 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 227 GetRequests, 172 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2895occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 40.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9941682754182748 AbsIntWeakeningRatio, 0.22023809523809523 AbsIntAvgWeakeningVarsNumRemoved, 1299.6845238095239 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 257 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1015 NumberOfCodeBlocks, 1015 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1008 ConstructedInterpolants, 0 QuantifiedInterpolants, 961084 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 105/107 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown