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_label04_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:21:31,338 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:21:31,341 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:21:31,359 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:21:31,359 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:21:31,360 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:21:31,361 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:21:31,363 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:21:31,365 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:21:31,366 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:21:31,366 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:21:31,367 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:21:31,368 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:21:31,369 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:21:31,370 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:21:31,374 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:21:31,375 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:21:31,377 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:21:31,379 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:21:31,382 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:21:31,383 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:21:31,384 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:21:31,386 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:21:31,399 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 19:21:31,429 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:21:31,429 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:21:31,431 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:21:31,431 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:21:31,431 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:21:31,431 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:21:31,431 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:21:31,432 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:21:31,432 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:21:31,432 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:21:31,432 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:21:31,432 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:21:31,433 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:21:31,434 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:21:31,434 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:21:31,434 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:21:31,434 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:21:31,434 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:21:31,434 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:21:31,435 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:21:31,435 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:21:31,435 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:21:31,435 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:21:31,435 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:21:31,437 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:21:31,438 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:21:31,438 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:21:31,438 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:21:31,438 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:21:31,438 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:21:31,438 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:21:31,439 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:21:31,439 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:21:31,439 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:21:31,485 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:21:31,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:21:31,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:21:31,505 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:21:31,506 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:21:31,507 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label04_true-unreach-call_false-termination.c [2018-10-24 19:21:31,574 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6a997d18c/03a11fb8343548fbb39f2f8df87c943d/FLAG720dd0b7f [2018-10-24 19:21:32,168 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:21:32,169 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label04_true-unreach-call_false-termination.c [2018-10-24 19:21:32,189 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6a997d18c/03a11fb8343548fbb39f2f8df87c943d/FLAG720dd0b7f [2018-10-24 19:21:32,207 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6a997d18c/03a11fb8343548fbb39f2f8df87c943d [2018-10-24 19:21:32,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:21:32,219 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:21:32,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:21:32,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:21:32,224 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:21:32,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:32,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed858fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32, skipping insertion in model container [2018-10-24 19:21:32,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:32,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:21:32,304 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:21:32,725 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:21:32,730 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:21:32,871 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:21:32,892 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:21:32,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32 WrapperNode [2018-10-24 19:21:32,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:21:32,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:21:32,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:21:32,894 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:21:32,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:32,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:33,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:21:33,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:21:33,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:21:33,098 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:21:33,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:33,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:33,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:33,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:33,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:33,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:33,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (1/1) ... [2018-10-24 19:21:33,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:21:33,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:21:33,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:21:33,185 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:21:33,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (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 19:21:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:21:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:21:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:21:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:21:33,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:21:33,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:21:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:21:33,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:21:36,723 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:21:36,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:21:36 BoogieIcfgContainer [2018-10-24 19:21:36,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:21:36,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:21:36,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:21:36,735 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:21:36,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:21:32" (1/3) ... [2018-10-24 19:21:36,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e51fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:21:36, skipping insertion in model container [2018-10-24 19:21:36,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:21:32" (2/3) ... [2018-10-24 19:21:36,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e51fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:21:36, skipping insertion in model container [2018-10-24 19:21:36,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:21:36" (3/3) ... [2018-10-24 19:21:36,741 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label04_true-unreach-call_false-termination.c [2018-10-24 19:21:36,752 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:21:36,767 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:21:36,787 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:21:36,841 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:21:36,841 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:21:36,841 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:21:36,841 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:21:36,841 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:21:36,842 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:21:36,842 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:21:36,843 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:21:36,878 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:21:36,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 19:21:36,892 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:21:36,893 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] [2018-10-24 19:21:36,896 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:21:36,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:36,904 INFO L82 PathProgramCache]: Analyzing trace with hash -744241401, now seen corresponding path program 1 times [2018-10-24 19:21:36,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:21:36,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:36,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:21:36,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:36,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:21:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:21:37,591 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:21:37,677 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 19:21:37,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:21:37,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:21:37,680 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:37,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:21:37,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:21:37,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:21:37,705 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:21:39,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:21:39,179 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-24 19:21:39,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:21:39,182 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 113 [2018-10-24 19:21:39,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:21:39,200 INFO L225 Difference]: With dead ends: 618 [2018-10-24 19:21:39,201 INFO L226 Difference]: Without dead ends: 379 [2018-10-24 19:21:39,207 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 19:21:39,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-24 19:21:39,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-24 19:21:39,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-24 19:21:39,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-24 19:21:39,292 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 113 [2018-10-24 19:21:39,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:21:39,293 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-24 19:21:39,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:21:39,294 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-24 19:21:39,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 19:21:39,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:21:39,300 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] [2018-10-24 19:21:39,301 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:21:39,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:39,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1318428498, now seen corresponding path program 1 times [2018-10-24 19:21:39,301 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:21:39,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:39,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:21:39,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:39,303 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:21:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:21:39,578 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 19:21:39,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:21:39,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:21:39,579 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:39,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:21:39,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:21:39,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:21:39,582 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-24 19:21:41,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:21:41,567 INFO L93 Difference]: Finished difference Result 1229 states and 2094 transitions. [2018-10-24 19:21:41,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:21:41,570 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-24 19:21:41,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:21:41,582 INFO L225 Difference]: With dead ends: 1229 [2018-10-24 19:21:41,582 INFO L226 Difference]: Without dead ends: 856 [2018-10-24 19:21:41,586 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:21:41,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2018-10-24 19:21:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 823. [2018-10-24 19:21:41,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2018-10-24 19:21:41,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1292 transitions. [2018-10-24 19:21:41,666 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1292 transitions. Word has length 129 [2018-10-24 19:21:41,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:21:41,667 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1292 transitions. [2018-10-24 19:21:41,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:21:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1292 transitions. [2018-10-24 19:21:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-24 19:21:41,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:21:41,673 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] [2018-10-24 19:21:41,673 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:21:41,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:41,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1830664699, now seen corresponding path program 1 times [2018-10-24 19:21:41,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:21:41,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:41,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:21:41,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:41,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:21:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:21:42,191 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 19:21:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:21:42,341 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:21:42,342 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 19:21:42,342 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:21:42,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 19:21:42,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 19:21:42,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:21:42,344 INFO L87 Difference]: Start difference. First operand 823 states and 1292 transitions. Second operand 5 states. [2018-10-24 19:21:45,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:21:45,604 INFO L93 Difference]: Finished difference Result 1778 states and 2834 transitions. [2018-10-24 19:21:45,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 19:21:45,604 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2018-10-24 19:21:45,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:21:45,610 INFO L225 Difference]: With dead ends: 1778 [2018-10-24 19:21:45,610 INFO L226 Difference]: Without dead ends: 813 [2018-10-24 19:21:45,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 19:21:45,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2018-10-24 19:21:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 813. [2018-10-24 19:21:45,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 813 states. [2018-10-24 19:21:45,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1260 transitions. [2018-10-24 19:21:45,643 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1260 transitions. Word has length 140 [2018-10-24 19:21:45,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:21:45,644 INFO L481 AbstractCegarLoop]: Abstraction has 813 states and 1260 transitions. [2018-10-24 19:21:45,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 19:21:45,644 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1260 transitions. [2018-10-24 19:21:45,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 19:21:45,648 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:21:45,649 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:21:45,649 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:21:45,649 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:45,650 INFO L82 PathProgramCache]: Analyzing trace with hash 654500000, now seen corresponding path program 1 times [2018-10-24 19:21:45,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:21:45,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:45,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:21:45,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:21:45,651 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:21:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:21:45,940 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 19:21:45,940 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:21:45,941 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:21:45,942 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-24 19:21:45,944 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [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], [225], [228], [232], [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], [575], [577], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:21:46,015 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:21:46,015 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:21:58,477 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:21:58,479 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:21:58,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:21:58,519 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:22:03,731 INFO L232 lantSequenceWeakener]: Weakened 158 states. On average, predicates are now at 81.13% of their original sizes. [2018-10-24 19:22:03,731 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:22:07,398 INFO L413 sIntCurrentIteration]: We have 180 unified AI predicates [2018-10-24 19:22:07,399 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:22:07,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:22:07,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 19:22:07,400 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:22:07,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:22:07,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:22:07,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:22:07,402 INFO L87 Difference]: Start difference. First operand 813 states and 1260 transitions. Second operand 14 states. [2018-10-24 19:23:46,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:23:46,533 INFO L93 Difference]: Finished difference Result 1920 states and 2965 transitions. [2018-10-24 19:23:46,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:23:46,533 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 181 [2018-10-24 19:23:46,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:23:46,542 INFO L225 Difference]: With dead ends: 1920 [2018-10-24 19:23:46,542 INFO L226 Difference]: Without dead ends: 1113 [2018-10-24 19:23:46,545 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 193 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-24 19:23:46,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2018-10-24 19:23:46,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 960. [2018-10-24 19:23:46,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2018-10-24 19:23:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1414 transitions. [2018-10-24 19:23:46,649 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1414 transitions. Word has length 181 [2018-10-24 19:23:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:23:46,650 INFO L481 AbstractCegarLoop]: Abstraction has 960 states and 1414 transitions. [2018-10-24 19:23:46,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:23:46,650 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1414 transitions. [2018-10-24 19:23:46,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-10-24 19:23:46,654 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:23:46,654 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 19:23:46,655 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:23:46,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:23:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1852596897, now seen corresponding path program 1 times [2018-10-24 19:23:46,655 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:23:46,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:46,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:23:46,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:23:46,657 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:23:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:23:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 73 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:23:47,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:23:47,693 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:23:47,693 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-10-24 19:23:47,694 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [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], [225], [228], [232], [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], [575], [577], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:23:47,702 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:23:47,702 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:24:50,287 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:24:50,287 INFO L272 AbstractInterpreter]: Visited 118 different actions 460 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 19:24:50,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:24:50,298 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:24:54,517 INFO L232 lantSequenceWeakener]: Weakened 72 states. On average, predicates are now at 81.75% of their original sizes. [2018-10-24 19:24:54,517 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 19:25:31,282 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:25:31,286 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:25:31,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:25:31 BoogieIcfgContainer [2018-10-24 19:25:31,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:25:31,288 INFO L168 Benchmark]: Toolchain (without parser) took 239069.27 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -833.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 19:25:31,289 INFO L168 Benchmark]: CDTParser took 0.57 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 19:25:31,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 672.85 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:25:31,290 INFO L168 Benchmark]: Boogie Procedure Inliner took 204.41 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:25:31,291 INFO L168 Benchmark]: Boogie Preprocessor took 86.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:25:31,292 INFO L168 Benchmark]: RCFGBuilder took 3539.22 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: 105.8 MB). Peak memory consumption was 105.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:25:31,293 INFO L168 Benchmark]: TraceAbstraction took 234558.98 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -173.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 19:25:31,298 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 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 672.85 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 204.41 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.39 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3539.22 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: 105.8 MB). Peak memory consumption was 105.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234558.98 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: -173.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 490]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 490). Cancelled while BasicCegarLoop was analyzing trace of length 192 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 234.4s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 105.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 619 SDtfs, 3043 SDslu, 787 SDs, 0 SdLazy, 2994 SolverSat, 619 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 216 GetRequests, 177 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=960occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 75.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.99499634769905 AbsIntWeakeningRatio, 0.21621621621621623 AbsIntAvgWeakeningVarsNumRemoved, 1285.6756756756756 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 186 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 563 NumberOfCodeBlocks, 563 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 559 ConstructedInterpolants, 0 QuantifiedInterpolants, 422339 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 104/106 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown