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/Problem10_label24_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:05:35,541 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:05:35,543 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:05:35,555 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:05:35,556 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:05:35,557 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:05:35,558 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:05:35,560 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:05:35,561 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:05:35,562 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:05:35,563 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:05:35,563 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:05:35,564 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:05:35,565 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:05:35,567 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:05:35,567 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:05:35,568 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:05:35,570 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:05:35,572 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:05:35,576 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:05:35,577 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:05:35,583 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:05:35,585 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:05:35,586 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:05:35,586 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:05:35,587 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:05:35,590 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:05:35,591 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:05:35,592 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:05:35,595 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:05:35,595 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:05:35,596 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:05:35,596 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:05:35,597 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:05:35,597 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:05:35,600 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:05:35,601 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 18:05:35,632 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:05:35,634 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:05:35,634 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:05:35,635 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:05:35,635 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:05:35,635 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:05:35,635 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:05:35,636 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:05:35,636 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:05:35,636 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:05:35,636 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:05:35,636 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:05:35,637 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:05:35,637 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:05:35,637 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:05:35,638 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:05:35,638 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:05:35,638 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:05:35,638 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:05:35,638 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:05:35,639 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:05:35,639 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:05:35,639 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:05:35,639 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:05:35,639 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:05:35,640 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:05:35,640 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:05:35,640 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:05:35,640 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:05:35,640 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:05:35,641 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:05:35,642 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:05:35,642 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:05:35,642 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:05:35,688 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:05:35,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:05:35,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:05:35,708 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:05:35,708 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:05:35,709 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label24_false-unreach-call.c [2018-10-24 18:05:35,775 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1f00b1a6/d572ebb0bcd94c04b911ac142279cfeb/FLAG74535b95b [2018-10-24 18:05:36,319 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:05:36,320 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label24_false-unreach-call.c [2018-10-24 18:05:36,339 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1f00b1a6/d572ebb0bcd94c04b911ac142279cfeb/FLAG74535b95b [2018-10-24 18:05:36,359 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1f00b1a6/d572ebb0bcd94c04b911ac142279cfeb [2018-10-24 18:05:36,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:05:36,374 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:05:36,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:05:36,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:05:36,380 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:05:36,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:05:36" (1/1) ... [2018-10-24 18:05:36,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64b8a232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:36, skipping insertion in model container [2018-10-24 18:05:36,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:05:36" (1/1) ... [2018-10-24 18:05:36,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:05:36,476 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:05:36,972 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:05:36,976 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:05:37,143 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:05:37,161 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:05:37,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37 WrapperNode [2018-10-24 18:05:37,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:05:37,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:05:37,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:05:37,163 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:05:37,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (1/1) ... [2018-10-24 18:05:37,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (1/1) ... [2018-10-24 18:05:37,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:05:37,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:05:37,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:05:37,396 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:05:37,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (1/1) ... [2018-10-24 18:05:37,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (1/1) ... [2018-10-24 18:05:37,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (1/1) ... [2018-10-24 18:05:37,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (1/1) ... [2018-10-24 18:05:37,445 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (1/1) ... [2018-10-24 18:05:37,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (1/1) ... [2018-10-24 18:05:37,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (1/1) ... [2018-10-24 18:05:37,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:05:37,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:05:37,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:05:37,495 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:05:37,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (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 18:05:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:05:37,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:05:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:05:37,579 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:05:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:05:37,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:05:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:05:37,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:05:40,763 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:05:40,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:05:40 BoogieIcfgContainer [2018-10-24 18:05:40,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:05:40,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:05:40,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:05:40,770 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:05:40,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:05:36" (1/3) ... [2018-10-24 18:05:40,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1b72b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:05:40, skipping insertion in model container [2018-10-24 18:05:40,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:05:37" (2/3) ... [2018-10-24 18:05:40,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1b72b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:05:40, skipping insertion in model container [2018-10-24 18:05:40,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:05:40" (3/3) ... [2018-10-24 18:05:40,775 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label24_false-unreach-call.c [2018-10-24 18:05:40,785 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:05:40,794 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:05:40,812 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:05:40,850 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:05:40,850 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:05:40,851 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:05:40,851 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:05:40,851 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:05:40,851 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:05:40,852 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:05:40,852 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:05:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 18:05:40,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 18:05:40,887 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:05:40,888 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] [2018-10-24 18:05:40,891 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:05:40,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:05:40,897 INFO L82 PathProgramCache]: Analyzing trace with hash 823320841, now seen corresponding path program 1 times [2018-10-24 18:05:40,900 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:05:40,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:05:40,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:05:40,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:05:40,951 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:05:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:05:41,288 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:05:41,336 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 18:05:41,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:05:41,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:05:41,340 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:05:41,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:05:41,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:05:41,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:05:41,360 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 18:05:43,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:05:43,266 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 18:05:43,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:05:43,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-10-24 18:05:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:05:43,289 INFO L225 Difference]: With dead ends: 574 [2018-10-24 18:05:43,289 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 18:05:43,297 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 18:05:43,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 18:05:43,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 18:05:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 18:05:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 592 transitions. [2018-10-24 18:05:43,371 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 592 transitions. Word has length 21 [2018-10-24 18:05:43,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:05:43,372 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 592 transitions. [2018-10-24 18:05:43,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:05:43,373 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 592 transitions. [2018-10-24 18:05:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 18:05:43,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:05:43,379 INFO L375 BasicCegarLoop]: trace histogram [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 18:05:43,379 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:05:43,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:05:43,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1112402304, now seen corresponding path program 1 times [2018-10-24 18:05:43,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:05:43,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:05:43,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:05:43,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:05:43,382 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:05:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:05:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:05:43,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:05:43,726 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:05:43,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:05:43,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:05:43,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:05:43,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:05:43,730 INFO L87 Difference]: Start difference. First operand 356 states and 592 transitions. Second operand 6 states. [2018-10-24 18:05:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:05:45,906 INFO L93 Difference]: Finished difference Result 1002 states and 1689 transitions. [2018-10-24 18:05:45,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:05:45,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-10-24 18:05:45,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:05:45,918 INFO L225 Difference]: With dead ends: 1002 [2018-10-24 18:05:45,918 INFO L226 Difference]: Without dead ends: 652 [2018-10-24 18:05:45,921 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 18:05:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2018-10-24 18:05:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 640. [2018-10-24 18:05:45,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2018-10-24 18:05:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 960 transitions. [2018-10-24 18:05:45,968 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 960 transitions. Word has length 91 [2018-10-24 18:05:45,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:05:45,969 INFO L481 AbstractCegarLoop]: Abstraction has 640 states and 960 transitions. [2018-10-24 18:05:45,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:05:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 960 transitions. [2018-10-24 18:05:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-24 18:05:45,974 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:05:45,974 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:05:45,974 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:05:45,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:05:45,975 INFO L82 PathProgramCache]: Analyzing trace with hash -2093526668, now seen corresponding path program 1 times [2018-10-24 18:05:45,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:05:45,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:05:45,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:05:45,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:05:45,977 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:05:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:05:46,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:05:46,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:05:46,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:05:46,211 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:05:46,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:05:46,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:05:46,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:05:46,212 INFO L87 Difference]: Start difference. First operand 640 states and 960 transitions. Second operand 4 states. [2018-10-24 18:05:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:05:50,440 INFO L93 Difference]: Finished difference Result 2128 states and 3336 transitions. [2018-10-24 18:05:50,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:05:50,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-10-24 18:05:50,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:05:50,453 INFO L225 Difference]: With dead ends: 2128 [2018-10-24 18:05:50,453 INFO L226 Difference]: Without dead ends: 904 [2018-10-24 18:05:50,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:05:50,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2018-10-24 18:05:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 904. [2018-10-24 18:05:50,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2018-10-24 18:05:50,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1277 transitions. [2018-10-24 18:05:50,533 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1277 transitions. Word has length 101 [2018-10-24 18:05:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:05:50,534 INFO L481 AbstractCegarLoop]: Abstraction has 904 states and 1277 transitions. [2018-10-24 18:05:50,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:05:50,534 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1277 transitions. [2018-10-24 18:05:50,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-10-24 18:05:50,544 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:05:50,544 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:05:50,545 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:05:50,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:05:50,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1920891619, now seen corresponding path program 1 times [2018-10-24 18:05:50,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:05:50,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:05:50,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:05:50,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:05:50,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:05:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:05:50,875 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:05:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:05:51,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:05:51,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:05:51,079 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:05:51,080 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:05:51,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:05:51,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:05:51,080 INFO L87 Difference]: Start difference. First operand 904 states and 1277 transitions. Second operand 6 states. [2018-10-24 18:05:52,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:05:52,319 INFO L93 Difference]: Finished difference Result 2127 states and 3078 transitions. [2018-10-24 18:05:52,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:05:52,327 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-10-24 18:05:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:05:52,339 INFO L225 Difference]: With dead ends: 2127 [2018-10-24 18:05:52,339 INFO L226 Difference]: Without dead ends: 1229 [2018-10-24 18:05:52,344 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:05:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2018-10-24 18:05:52,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1208. [2018-10-24 18:05:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1208 states. [2018-10-24 18:05:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1646 transitions. [2018-10-24 18:05:52,393 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1646 transitions. Word has length 144 [2018-10-24 18:05:52,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:05:52,393 INFO L481 AbstractCegarLoop]: Abstraction has 1208 states and 1646 transitions. [2018-10-24 18:05:52,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:05:52,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1646 transitions. [2018-10-24 18:05:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-24 18:05:52,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:05:52,397 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:05:52,398 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:05:52,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:05:52,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1935153608, now seen corresponding path program 1 times [2018-10-24 18:05:52,398 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:05:52,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:05:52,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:05:52,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:05:52,399 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:05:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:05:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 78 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:05:52,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:05:52,978 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:05:52,980 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 193 with the following transitions: [2018-10-24 18:05:52,983 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:05:53,088 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:05:53,089 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:05:55,771 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:05:55,773 INFO L272 AbstractInterpreter]: Visited 93 different actions 93 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:05:55,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:05:55,783 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:05:58,764 INFO L232 lantSequenceWeakener]: Weakened 171 states. On average, predicates are now at 73.1% of their original sizes. [2018-10-24 18:05:58,764 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:06:03,932 INFO L413 sIntCurrentIteration]: We have 191 unified AI predicates [2018-10-24 18:06:03,932 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:06:03,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:06:03,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-24 18:06:03,933 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:06:03,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:06:03,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:06:03,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:06:03,935 INFO L87 Difference]: Start difference. First operand 1208 states and 1646 transitions. Second operand 10 states. [2018-10-24 18:06:15,790 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:06:48,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:06:48,207 INFO L93 Difference]: Finished difference Result 2559 states and 3488 transitions. [2018-10-24 18:06:48,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:06:48,208 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 192 [2018-10-24 18:06:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:06:48,217 INFO L225 Difference]: With dead ends: 2559 [2018-10-24 18:06:48,218 INFO L226 Difference]: Without dead ends: 1357 [2018-10-24 18:06:48,221 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 195 GetRequests, 154 SyntacticMatches, 29 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-10-24 18:06:48,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2018-10-24 18:06:48,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1352. [2018-10-24 18:06:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2018-10-24 18:06:48,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1796 transitions. [2018-10-24 18:06:48,296 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1796 transitions. Word has length 192 [2018-10-24 18:06:48,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:06:48,296 INFO L481 AbstractCegarLoop]: Abstraction has 1352 states and 1796 transitions. [2018-10-24 18:06:48,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 18:06:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1796 transitions. [2018-10-24 18:06:48,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-24 18:06:48,306 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:06:48,307 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 18:06:48,307 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:06:48,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:06:48,307 INFO L82 PathProgramCache]: Analyzing trace with hash 2141226182, now seen corresponding path program 1 times [2018-10-24 18:06:48,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:06:48,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:48,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:06:48,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:06:48,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:06:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:06:48,774 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 18:06:49,589 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 116 proven. 82 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 18:06:49,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:06:49,590 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:06:49,590 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 264 with the following transitions: [2018-10-24 18:06:49,591 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:06:49,595 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:06:49,596 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:06:50,767 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:07:00,063 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:07:00,064 INFO L272 AbstractInterpreter]: Visited 97 different actions 461 times. Merged at 5 different actions 20 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:07:00,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:07:00,074 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:07:02,163 INFO L232 lantSequenceWeakener]: Weakened 53 states. On average, predicates are now at 74.19% of their original sizes. [2018-10-24 18:07:02,163 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:07:13,048 INFO L413 sIntCurrentIteration]: We have 262 unified AI predicates [2018-10-24 18:07:13,048 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:07:13,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:07:13,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [14] total 32 [2018-10-24 18:07:13,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:07:13,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 18:07:13,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 18:07:13,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2018-10-24 18:07:13,051 INFO L87 Difference]: Start difference. First operand 1352 states and 1796 transitions. Second operand 20 states. [2018-10-24 18:09:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:25,484 INFO L93 Difference]: Finished difference Result 3018 states and 4059 transitions. [2018-10-24 18:09:25,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-10-24 18:09:25,484 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 263 [2018-10-24 18:09:25,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:25,493 INFO L225 Difference]: With dead ends: 3018 [2018-10-24 18:09:25,494 INFO L226 Difference]: Without dead ends: 1816 [2018-10-24 18:09:25,498 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 273 GetRequests, 230 SyntacticMatches, 14 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=178, Invalid=752, Unknown=0, NotChecked=0, Total=930 [2018-10-24 18:09:25,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2018-10-24 18:09:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1730. [2018-10-24 18:09:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1730 states. [2018-10-24 18:09:25,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2217 transitions. [2018-10-24 18:09:25,615 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2217 transitions. Word has length 263 [2018-10-24 18:09:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:25,616 INFO L481 AbstractCegarLoop]: Abstraction has 1730 states and 2217 transitions. [2018-10-24 18:09:25,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 18:09:25,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2217 transitions. [2018-10-24 18:09:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-24 18:09:25,624 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:25,625 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 18:09:25,625 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:25,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:25,626 INFO L82 PathProgramCache]: Analyzing trace with hash -573304603, now seen corresponding path program 1 times [2018-10-24 18:09:25,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:25,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:25,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:25,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:25,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 133 proven. 158 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:09:26,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:09:26,280 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:09:26,280 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 309 with the following transitions: [2018-10-24 18:09:26,280 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:09:26,285 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:09:26,286 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:09:28,703 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:09:31,731 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 18:09:31,732 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 18:09:31,734 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 18:09:31,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:09:31,734 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:09:31,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:31,754 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:09:31,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:31,889 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:09:31,927 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 18:09:32,128 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:09:32,129 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:09:32,134 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:09:32,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:09:32 BoogieIcfgContainer [2018-10-24 18:09:32,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:09:32,135 INFO L168 Benchmark]: Toolchain (without parser) took 235762.68 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 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 18:09:32,138 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-24 18:09:32,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 787.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:09:32,143 INFO L168 Benchmark]: Boogie Procedure Inliner took 232.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 721.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:09:32,145 INFO L168 Benchmark]: Boogie Preprocessor took 98.49 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:09:32,146 INFO L168 Benchmark]: RCFGBuilder took 3269.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.1 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:09:32,147 INFO L168 Benchmark]: TraceAbstraction took 231368.27 ms. Allocated memory was 2.3 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 2.9 GB in the end (delta: -812.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 18:09:32,155 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 787.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 232.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 721.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.49 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3269.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 106.1 MB). Peak memory consumption was 106.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231368.27 ms. Allocated memory was 2.3 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 2.9 GB in the end (delta: -812.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 46]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 46). Cancelled while BasicCegarLoop was analyzing trace of length 309 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 231.2s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 186.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 659 SDtfs, 4379 SDslu, 686 SDs, 0 SdLazy, 5197 SolverSat, 1004 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 498 GetRequests, 393 SyntacticMatches, 47 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1730occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.7s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9946052084333107 AbsIntWeakeningRatio, 0.1280353200883002 AbsIntAvgWeakeningVarsNumRemoved, 460.52759381898454 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 124 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 812 NumberOfCodeBlocks, 812 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 806 ConstructedInterpolants, 0 QuantifiedInterpolants, 1103193 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 260/420 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown