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/Problem18_label49_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:57:47,610 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:57:47,613 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:57:47,629 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:57:47,630 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:57:47,631 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:57:47,632 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:57:47,635 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:57:47,637 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:57:47,638 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:57:47,647 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:57:47,647 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:57:47,648 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:57:47,651 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:57:47,653 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:57:47,654 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:57:47,656 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:57:47,660 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:57:47,662 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:57:47,666 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:57:47,667 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:57:47,671 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:57:47,674 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:57:47,688 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 22:57:47,714 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:57:47,714 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:57:47,716 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:57:47,716 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:57:47,716 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:57:47,717 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:57:47,717 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:57:47,717 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:57:47,717 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:57:47,717 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:57:47,718 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:57:47,718 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:57:47,719 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:57:47,719 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:57:47,719 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:57:47,719 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:57:47,719 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:57:47,720 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:57:47,721 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:57:47,722 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:57:47,722 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:57:47,722 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:57:47,722 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:57:47,722 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:57:47,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:57:47,723 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:57:47,723 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:57:47,723 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:57:47,723 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:57:47,724 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:57:47,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:57:47,724 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:57:47,724 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:57:47,724 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:57:47,775 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:57:47,794 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:57:47,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:57:47,800 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:57:47,800 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:57:47,801 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label49_false-unreach-call.c [2018-10-23 22:57:47,871 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/78863f505/f6af980d0ed541d8825e100084ea9e79/FLAGae8115bc9 [2018-10-23 22:57:48,568 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:57:48,569 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label49_false-unreach-call.c [2018-10-23 22:57:48,594 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/78863f505/f6af980d0ed541d8825e100084ea9e79/FLAGae8115bc9 [2018-10-23 22:57:48,611 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/78863f505/f6af980d0ed541d8825e100084ea9e79 [2018-10-23 22:57:48,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:57:48,627 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:57:48,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:57:48,629 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:57:48,633 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:57:48,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:57:48" (1/1) ... [2018-10-23 22:57:48,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b10951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:48, skipping insertion in model container [2018-10-23 22:57:48,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:57:48" (1/1) ... [2018-10-23 22:57:48,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:57:48,794 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:57:49,802 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:57:49,808 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:57:50,288 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:57:50,319 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:57:50,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50 WrapperNode [2018-10-23 22:57:50,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:57:50,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:57:50,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:57:50,322 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:57:50,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (1/1) ... [2018-10-23 22:57:50,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (1/1) ... [2018-10-23 22:57:50,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:57:50,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:57:50,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:57:50,750 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:57:50,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (1/1) ... [2018-10-23 22:57:50,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (1/1) ... [2018-10-23 22:57:50,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (1/1) ... [2018-10-23 22:57:50,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (1/1) ... [2018-10-23 22:57:50,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (1/1) ... [2018-10-23 22:57:50,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (1/1) ... [2018-10-23 22:57:50,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (1/1) ... [2018-10-23 22:57:50,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:57:50,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:57:50,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:57:50,997 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:57:50,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:57:51,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:57:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:57:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:57:51,071 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:57:51,071 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:57:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:57:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:57:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:57:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:57:51,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:57:51,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:57:51,073 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:57:59,346 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:57:59,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:57:59 BoogieIcfgContainer [2018-10-23 22:57:59,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:57:59,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:57:59,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:57:59,353 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:57:59,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:57:48" (1/3) ... [2018-10-23 22:57:59,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19685742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:57:59, skipping insertion in model container [2018-10-23 22:57:59,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:57:50" (2/3) ... [2018-10-23 22:57:59,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19685742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:57:59, skipping insertion in model container [2018-10-23 22:57:59,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:57:59" (3/3) ... [2018-10-23 22:57:59,357 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label49_false-unreach-call.c [2018-10-23 22:57:59,368 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:57:59,379 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:57:59,397 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:57:59,443 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:57:59,444 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:57:59,444 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:57:59,444 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:57:59,444 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:57:59,444 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:57:59,444 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:57:59,445 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:57:59,483 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-23 22:57:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-23 22:57:59,491 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:57:59,492 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] [2018-10-23 22:57:59,495 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:57:59,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:57:59,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1316717375, now seen corresponding path program 1 times [2018-10-23 22:57:59,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:57:59,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:57:59,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:57:59,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:57:59,566 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:57:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:57:59,973 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:58:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:58:00,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:58:00,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:58:00,074 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:58:00,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:58:00,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:58:00,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:58:00,095 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-23 22:58:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:58:06,876 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-23 22:58:06,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:58:06,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-23 22:58:06,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:58:06,927 INFO L225 Difference]: With dead ends: 2251 [2018-10-23 22:58:06,927 INFO L226 Difference]: Without dead ends: 1474 [2018-10-23 22:58:06,943 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:58:06,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-23 22:58:07,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-23 22:58:07,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-23 22:58:07,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-10-23 22:58:07,101 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 29 [2018-10-23 22:58:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:58:07,102 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-10-23 22:58:07,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:58:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-10-23 22:58:07,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 22:58:07,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:58:07,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:58:07,108 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:58:07,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:58:07,109 INFO L82 PathProgramCache]: Analyzing trace with hash -926738512, now seen corresponding path program 1 times [2018-10-23 22:58:07,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:58:07,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:07,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:58:07,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:07,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:58:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:58:07,384 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:58:07,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:58:07,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:58:07,385 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:58:07,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:58:07,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:58:07,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:58:07,387 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-10-23 22:58:15,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:58:15,255 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-10-23 22:58:15,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:58:15,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-10-23 22:58:15,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:58:15,293 INFO L225 Difference]: With dead ends: 4419 [2018-10-23 22:58:15,294 INFO L226 Difference]: Without dead ends: 2951 [2018-10-23 22:58:15,300 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:58:15,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-23 22:58:15,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-23 22:58:15,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-23 22:58:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-10-23 22:58:15,422 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 99 [2018-10-23 22:58:15,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:58:15,423 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-10-23 22:58:15,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:58:15,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-10-23 22:58:15,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-23 22:58:15,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:58:15,431 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:58:15,432 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:58:15,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:58:15,432 INFO L82 PathProgramCache]: Analyzing trace with hash -730565675, now seen corresponding path program 1 times [2018-10-23 22:58:15,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:58:15,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:15,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:58:15,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:15,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:58:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:58:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:58:15,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:58:15,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:58:15,708 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:58:15,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:58:15,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:58:15,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:58:15,710 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-10-23 22:58:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:58:21,333 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-10-23 22:58:21,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:58:21,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 100 [2018-10-23 22:58:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:58:21,380 INFO L225 Difference]: With dead ends: 7345 [2018-10-23 22:58:21,381 INFO L226 Difference]: Without dead ends: 4426 [2018-10-23 22:58:21,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:58:21,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-10-23 22:58:21,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-10-23 22:58:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-10-23 22:58:21,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-10-23 22:58:21,534 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 100 [2018-10-23 22:58:21,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:58:21,534 INFO L481 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-10-23 22:58:21,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:58:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-10-23 22:58:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-23 22:58:21,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:58:21,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:58:21,538 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:58:21,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:58:21,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1316608327, now seen corresponding path program 1 times [2018-10-23 22:58:21,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:58:21,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:21,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:58:21,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:21,540 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:58:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:58:21,855 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:58:21,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:58:21,856 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:58:21,856 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:58:21,856 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:58:21,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:58:21,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:58:21,859 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-10-23 22:58:31,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:58:31,769 INFO L93 Difference]: Finished difference Result 14819 states and 21982 transitions. [2018-10-23 22:58:31,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 22:58:31,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-10-23 22:58:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:58:31,829 INFO L225 Difference]: With dead ends: 14819 [2018-10-23 22:58:31,829 INFO L226 Difference]: Without dead ends: 10434 [2018-10-23 22:58:31,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 22:58:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10434 states. [2018-10-23 22:58:32,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10434 to 10284. [2018-10-23 22:58:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10284 states. [2018-10-23 22:58:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10284 states to 10284 states and 13624 transitions. [2018-10-23 22:58:32,139 INFO L78 Accepts]: Start accepts. Automaton has 10284 states and 13624 transitions. Word has length 102 [2018-10-23 22:58:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:58:32,140 INFO L481 AbstractCegarLoop]: Abstraction has 10284 states and 13624 transitions. [2018-10-23 22:58:32,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:58:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 10284 states and 13624 transitions. [2018-10-23 22:58:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-23 22:58:32,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:58:32,146 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 22:58:32,148 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:58:32,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:58:32,149 INFO L82 PathProgramCache]: Analyzing trace with hash 288363982, now seen corresponding path program 1 times [2018-10-23 22:58:32,149 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:58:32,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:32,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:58:32,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:32,151 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:58:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:58:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-23 22:58:32,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:58:32,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:58:32,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:58:32,441 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:58:32,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:58:32,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:58:32,442 INFO L87 Difference]: Start difference. First operand 10284 states and 13624 transitions. Second operand 4 states. [2018-10-23 22:58:40,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:58:40,136 INFO L93 Difference]: Finished difference Result 37611 states and 51730 transitions. [2018-10-23 22:58:40,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:58:40,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 206 [2018-10-23 22:58:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:58:40,255 INFO L225 Difference]: With dead ends: 37611 [2018-10-23 22:58:40,255 INFO L226 Difference]: Without dead ends: 27333 [2018-10-23 22:58:40,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:58:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27333 states. [2018-10-23 22:58:40,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27333 to 27324. [2018-10-23 22:58:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27324 states. [2018-10-23 22:58:40,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27324 states to 27324 states and 34979 transitions. [2018-10-23 22:58:40,866 INFO L78 Accepts]: Start accepts. Automaton has 27324 states and 34979 transitions. Word has length 206 [2018-10-23 22:58:40,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:58:40,870 INFO L481 AbstractCegarLoop]: Abstraction has 27324 states and 34979 transitions. [2018-10-23 22:58:40,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:58:40,870 INFO L276 IsEmpty]: Start isEmpty. Operand 27324 states and 34979 transitions. [2018-10-23 22:58:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-10-23 22:58:40,879 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:58:40,879 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 22:58:40,879 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:58:40,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:58:40,880 INFO L82 PathProgramCache]: Analyzing trace with hash -15949386, now seen corresponding path program 1 times [2018-10-23 22:58:40,880 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:58:40,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:40,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:58:40,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:58:40,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:58:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:58:41,266 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:58:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 39 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:58:41,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:58:41,753 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:58:41,754 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 291 with the following transitions: [2018-10-23 22:58:41,756 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1755], [1757], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-23 22:58:41,838 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:58:41,839 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:58:45,690 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:58:45,692 INFO L272 AbstractInterpreter]: Visited 143 different actions 143 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-23 22:58:45,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:58:45,703 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:58:48,433 INFO L232 lantSequenceWeakener]: Weakened 282 states. On average, predicates are now at 77.52% of their original sizes. [2018-10-23 22:58:48,433 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:58:48,923 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:58:48,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:58:48,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2018-10-23 22:58:48,925 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:58:48,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 22:58:48,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 22:58:48,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:58:48,926 INFO L87 Difference]: Start difference. First operand 27324 states and 34979 transitions. Second operand 7 states. [2018-10-23 22:58:59,399 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 23:00:28,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:00:28,856 INFO L93 Difference]: Finished difference Result 55347 states and 70690 transitions. [2018-10-23 23:00:28,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:00:28,856 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2018-10-23 23:00:28,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:00:28,948 INFO L225 Difference]: With dead ends: 55347 [2018-10-23 23:00:28,948 INFO L226 Difference]: Without dead ends: 28029 [2018-10-23 23:00:28,997 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 290 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-23 23:00:29,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28029 states. [2018-10-23 23:00:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28029 to 28027. [2018-10-23 23:00:29,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28027 states. [2018-10-23 23:00:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28027 states to 28027 states and 35694 transitions. [2018-10-23 23:00:29,528 INFO L78 Accepts]: Start accepts. Automaton has 28027 states and 35694 transitions. Word has length 290 [2018-10-23 23:00:29,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:00:29,529 INFO L481 AbstractCegarLoop]: Abstraction has 28027 states and 35694 transitions. [2018-10-23 23:00:29,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 23:00:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 28027 states and 35694 transitions. [2018-10-23 23:00:29,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-10-23 23:00:29,546 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:00:29,547 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 23:00:29,548 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:00:29,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:00:29,548 INFO L82 PathProgramCache]: Analyzing trace with hash -2036406216, now seen corresponding path program 1 times [2018-10-23 23:00:29,548 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:00:29,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:00:29,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:00:29,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:00:29,550 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:00:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:00:30,131 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 23:00:30,344 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 23:00:30,590 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 23:00:30,836 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-23 23:00:31,188 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-23 23:00:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 125 proven. 320 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 23:00:31,818 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:00:31,818 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:00:31,818 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 478 with the following transitions: [2018-10-23 23:00:31,819 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1755], [1757], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-23 23:00:31,828 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:00:31,828 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:00:43,223 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:00:43,224 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-23 23:00:43,242 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:00:43,242 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:00:48,423 INFO L232 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 77.45% of their original sizes. [2018-10-23 23:00:48,424 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:01:25,043 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:01:25,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:01:25,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [11] total 24 [2018-10-23 23:01:25,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:01:25,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 23:01:25,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 23:01:25,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2018-10-23 23:01:25,045 INFO L87 Difference]: Start difference. First operand 28027 states and 35694 transitions. Second operand 15 states. Received shutdown request... [2018-10-23 23:01:25,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:01:25,584 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:01:25,589 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:01:25,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:01:25 BoogieIcfgContainer [2018-10-23 23:01:25,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:01:25,591 INFO L168 Benchmark]: Toolchain (without parser) took 216964.53 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 1.9 GB in the end (delta: -430.3 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-23 23:01:25,593 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:01:25,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1692.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. [2018-10-23 23:01:25,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 428.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 788.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.4 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-23 23:01:25,596 INFO L168 Benchmark]: Boogie Preprocessor took 246.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:01:25,597 INFO L168 Benchmark]: RCFGBuilder took 8350.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 502.3 MB). Peak memory consumption was 502.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:01:25,597 INFO L168 Benchmark]: TraceAbstraction took 206240.79 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -147.4 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 23:01:25,607 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1692.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 150.6 MB). Peak memory consumption was 150.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 428.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 788.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -964.4 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 246.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8350.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 502.3 MB). Peak memory consumption was 502.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206240.79 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -147.4 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: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (28027states) and FLOYD_HOARE automaton (currently 4 states, 15 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 206.1s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 138.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1492 SDtfs, 12492 SDslu, 878 SDs, 0 SdLazy, 22128 SolverSat, 5820 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 804 GetRequests, 707 SyntacticMatches, 56 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 36.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28027occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9968054371507056 AbsIntWeakeningRatio, 0.07581699346405228 AbsIntAvgWeakeningVarsNumRemoved, 353.63790849673205 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 222 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1303 NumberOfCodeBlocks, 1303 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1296 ConstructedInterpolants, 0 QuantifiedInterpolants, 2289751 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 349/797 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown