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_label17_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:25:19,222 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:25:19,226 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:25:19,245 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:25:19,245 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:25:19,246 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:25:19,248 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:25:19,249 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:25:19,251 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:25:19,252 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:25:19,253 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:25:19,253 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:25:19,254 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:25:19,255 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:25:19,256 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:25:19,257 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:25:19,258 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:25:19,260 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:25:19,262 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:25:19,263 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:25:19,265 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:25:19,266 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:25:19,269 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:25:19,279 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 19:25:19,309 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:25:19,309 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:25:19,310 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:25:19,311 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:25:19,311 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:25:19,311 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:25:19,311 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:25:19,312 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:25:19,312 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:25:19,312 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:25:19,312 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:25:19,312 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:25:19,313 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:25:19,313 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:25:19,314 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:25:19,314 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:25:19,314 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:25:19,314 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:25:19,314 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:25:19,315 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:25:19,315 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:25:19,315 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:25:19,315 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:25:19,315 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:25:19,315 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:25:19,316 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:25:19,316 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:25:19,316 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:25:19,316 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:25:19,316 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:25:19,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:25:19,317 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:25:19,317 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:25:19,317 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:25:19,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:25:19,380 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:25:19,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:25:19,385 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:25:19,385 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:25:19,386 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label17_true-unreach-call_false-termination.c [2018-10-24 19:25:19,445 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/61bbb4a37/26be26cbac604fb8bc9e9e719ac524e0/FLAG7c7252c1b [2018-10-24 19:25:20,017 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:25:20,021 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label17_true-unreach-call_false-termination.c [2018-10-24 19:25:20,048 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/61bbb4a37/26be26cbac604fb8bc9e9e719ac524e0/FLAG7c7252c1b [2018-10-24 19:25:20,076 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/61bbb4a37/26be26cbac604fb8bc9e9e719ac524e0 [2018-10-24 19:25:20,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:25:20,091 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:25:20,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:25:20,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:25:20,103 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:25:20,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:20,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68109397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20, skipping insertion in model container [2018-10-24 19:25:20,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:20,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:25:20,191 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:25:20,633 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:25:20,645 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:25:20,802 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:25:20,825 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:25:20,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20 WrapperNode [2018-10-24 19:25:20,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:25:20,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:25:20,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:25:20,827 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:25:20,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:20,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:21,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:25:21,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:25:21,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:25:21,031 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:25:21,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:21,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:21,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:21,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:21,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:21,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:21,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (1/1) ... [2018-10-24 19:25:21,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:25:21,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:25:21,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:25:21,125 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:25:21,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:25:21,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:25:21,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:25:21,202 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:25:21,203 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:25:21,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:25:21,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:25:21,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:25:21,204 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:25:24,574 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:25:24,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:25:24 BoogieIcfgContainer [2018-10-24 19:25:24,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:25:24,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:25:24,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:25:24,580 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:25:24,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:25:20" (1/3) ... [2018-10-24 19:25:24,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0ea61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:25:24, skipping insertion in model container [2018-10-24 19:25:24,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:20" (2/3) ... [2018-10-24 19:25:24,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0ea61c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:25:24, skipping insertion in model container [2018-10-24 19:25:24,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:25:24" (3/3) ... [2018-10-24 19:25:24,584 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label17_true-unreach-call_false-termination.c [2018-10-24 19:25:24,595 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:25:24,605 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:25:24,624 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:25:24,663 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:25:24,663 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:25:24,663 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:25:24,663 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:25:24,664 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:25:24,664 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:25:24,664 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:25:24,664 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:25:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:25:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 19:25:24,713 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:25:24,715 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] [2018-10-24 19:25:24,718 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:25:24,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:25:24,725 INFO L82 PathProgramCache]: Analyzing trace with hash -346865840, now seen corresponding path program 1 times [2018-10-24 19:25:24,728 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:25:24,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:24,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:25:24,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:24,791 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:25:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:25:25,434 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:25:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:25:25,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:25:25,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:25:25,565 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:25:25,574 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:25:25,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:25:25,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:25:25,595 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:25:27,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:25:27,354 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-24 19:25:27,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:25:27,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2018-10-24 19:25:27,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:25:27,377 INFO L225 Difference]: With dead ends: 618 [2018-10-24 19:25:27,378 INFO L226 Difference]: Without dead ends: 379 [2018-10-24 19:25:27,388 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:25:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-24 19:25:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-24 19:25:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-24 19:25:27,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-24 19:25:27,530 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 126 [2018-10-24 19:25:27,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:25:27,532 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-24 19:25:27,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:25:27,532 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-24 19:25:27,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-24 19:25:27,548 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:25:27,549 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] [2018-10-24 19:25:27,549 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:25:27,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:25:27,550 INFO L82 PathProgramCache]: Analyzing trace with hash -837125915, now seen corresponding path program 1 times [2018-10-24 19:25:27,550 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:25:27,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:27,559 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:25:27,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:27,560 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:25:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:25:27,851 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 19:25:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:25:27,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:25:27,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:25:27,940 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:25:27,942 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:25:27,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:25:27,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:25:27,943 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-24 19:25:30,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:25:30,246 INFO L93 Difference]: Finished difference Result 1229 states and 2094 transitions. [2018-10-24 19:25:30,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:25:30,253 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-24 19:25:30,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:25:30,269 INFO L225 Difference]: With dead ends: 1229 [2018-10-24 19:25:30,269 INFO L226 Difference]: Without dead ends: 856 [2018-10-24 19:25:30,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:25:30,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2018-10-24 19:25:30,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 823. [2018-10-24 19:25:30,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2018-10-24 19:25:30,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1292 transitions. [2018-10-24 19:25:30,352 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1292 transitions. Word has length 142 [2018-10-24 19:25:30,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:25:30,353 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1292 transitions. [2018-10-24 19:25:30,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:25:30,353 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1292 transitions. [2018-10-24 19:25:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 19:25:30,360 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:25:30,360 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] [2018-10-24 19:25:30,360 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:25:30,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:25:30,361 INFO L82 PathProgramCache]: Analyzing trace with hash -517700326, now seen corresponding path program 1 times [2018-10-24 19:25:30,361 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:25:30,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:30,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:25:30,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:30,363 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:25:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:25:30,673 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:25:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:25:30,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:25:30,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:25:30,964 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:25:30,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:25:30,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:25:30,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:25:30,966 INFO L87 Difference]: Start difference. First operand 823 states and 1292 transitions. Second operand 6 states. [2018-10-24 19:25:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:25:35,131 INFO L93 Difference]: Finished difference Result 2557 states and 4222 transitions. [2018-10-24 19:25:35,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:25:35,135 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-24 19:25:35,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:25:35,154 INFO L225 Difference]: With dead ends: 2557 [2018-10-24 19:25:35,154 INFO L226 Difference]: Without dead ends: 1740 [2018-10-24 19:25:35,161 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 [2018-10-24 19:25:35,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2018-10-24 19:25:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1682. [2018-10-24 19:25:35,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-10-24 19:25:35,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2540 transitions. [2018-10-24 19:25:35,251 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2540 transitions. Word has length 149 [2018-10-24 19:25:35,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:25:35,251 INFO L481 AbstractCegarLoop]: Abstraction has 1682 states and 2540 transitions. [2018-10-24 19:25:35,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:25:35,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2540 transitions. [2018-10-24 19:25:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 19:25:35,260 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:25:35,261 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] [2018-10-24 19:25:35,261 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:25:35,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:25:35,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1972736718, now seen corresponding path program 1 times [2018-10-24 19:25:35,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:25:35,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:35,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:25:35,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:35,264 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:25:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:25:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 19:25:35,479 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:25:35,479 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:25:35,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 152 with the following transitions: [2018-10-24 19:25:35,482 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], [679], [681], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:25:35,560 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:25:35,561 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:25:48,562 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:25:48,563 INFO L272 AbstractInterpreter]: Visited 127 different actions 127 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:25:48,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:25:48,575 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:25:53,508 INFO L232 lantSequenceWeakener]: Weakened 130 states. On average, predicates are now at 81.53% of their original sizes. [2018-10-24 19:25:53,509 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:25:57,213 INFO L413 sIntCurrentIteration]: We have 150 unified AI predicates [2018-10-24 19:25:57,213 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:25:57,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:25:57,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 19:25:57,215 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:25:57,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:25:57,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:25:57,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:25:57,217 INFO L87 Difference]: Start difference. First operand 1682 states and 2540 transitions. Second operand 14 states. [2018-10-24 19:27:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:27:41,836 INFO L93 Difference]: Finished difference Result 3656 states and 5500 transitions. [2018-10-24 19:27:41,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:27:41,837 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 151 [2018-10-24 19:27:41,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:27:41,848 INFO L225 Difference]: With dead ends: 3656 [2018-10-24 19:27:41,848 INFO L226 Difference]: Without dead ends: 1980 [2018-10-24 19:27:41,854 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 163 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-24 19:27:41,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-10-24 19:27:41,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1827. [2018-10-24 19:27:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2018-10-24 19:27:41,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2692 transitions. [2018-10-24 19:27:41,998 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2692 transitions. Word has length 151 [2018-10-24 19:27:41,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:27:41,999 INFO L481 AbstractCegarLoop]: Abstraction has 1827 states and 2692 transitions. [2018-10-24 19:27:41,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:27:41,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2692 transitions. [2018-10-24 19:27:42,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 19:27:42,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:27:42,007 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] [2018-10-24 19:27:42,007 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:27:42,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:27:42,007 INFO L82 PathProgramCache]: Analyzing trace with hash -336940495, now seen corresponding path program 1 times [2018-10-24 19:27:42,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:27:42,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:27:42,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:27:42,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:27:42,009 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:27:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:27:42,243 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:27:42,243 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:27:42,244 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:27:42,244 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 162 with the following transitions: [2018-10-24 19:27:42,244 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], [679], [681], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:27:42,251 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:27:42,251 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:28:42,766 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:28:42,767 INFO L272 AbstractInterpreter]: Visited 131 different actions 512 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-24 19:28:42,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:28:42,773 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:28:47,333 INFO L232 lantSequenceWeakener]: Weakened 34 states. On average, predicates are now at 83.58% of their original sizes. [2018-10-24 19:28:47,334 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 19:29:32,295 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:29:32,300 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:29:32,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:29:32 BoogieIcfgContainer [2018-10-24 19:29:32,300 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:29:32,301 INFO L168 Benchmark]: Toolchain (without parser) took 252211.18 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -309.1 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 19:29:32,303 INFO L168 Benchmark]: CDTParser took 0.17 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. [2018-10-24 19:29:32,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 727.71 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-10-24 19:29:32,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 203.45 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -785.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:29:32,305 INFO L168 Benchmark]: Boogie Preprocessor took 93.94 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:29:32,306 INFO L168 Benchmark]: RCFGBuilder took 3450.32 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 121.6 MB). Peak memory consumption was 121.6 MB. Max. memory is 7.1 GB. [2018-10-24 19:29:32,307 INFO L168 Benchmark]: TraceAbstraction took 247724.31 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 320.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 19:29:32,312 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 727.71 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 203.45 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -785.0 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.94 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3450.32 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 121.6 MB). Peak memory consumption was 121.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 247724.31 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 320.0 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 529]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 529). Cancelled while BasicCegarLoop was analyzing trace of length 162 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 247.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 112.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 649 SDtfs, 2786 SDslu, 605 SDs, 0 SdLazy, 2930 SolverSat, 681 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 188 GetRequests, 144 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 8.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1827occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 73.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9938535309503046 AbsIntWeakeningRatio, 0.23225806451612904 AbsIntAvgWeakeningVarsNumRemoved, 1138.0258064516129 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 244 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 568 NumberOfCodeBlocks, 568 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 564 ConstructedInterpolants, 0 QuantifiedInterpolants, 175872 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