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_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:17:37,365 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:17:37,368 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:17:37,382 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:17:37,382 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:17:37,383 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:17:37,387 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:17:37,390 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:17:37,391 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:17:37,394 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:17:37,395 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:17:37,395 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:17:37,396 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:17:37,400 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:17:37,401 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:17:37,409 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:17:37,410 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:17:37,417 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:17:37,419 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:17:37,422 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:17:37,423 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:17:37,428 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:17:37,431 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:17:37,444 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 02:17:37,444 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 02:17:37,445 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 02:17:37,445 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 02:17:37,448 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 02:17:37,475 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:17:37,475 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:17:37,478 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:17:37,479 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:17:37,479 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:17:37,479 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:17:37,479 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:17:37,479 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:17:37,480 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:17:37,480 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:17:37,480 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:17:37,480 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:17:37,481 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:17:37,481 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:17:37,481 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:17:37,482 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:17:37,482 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:17:37,482 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:17:37,482 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:17:37,482 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:17:37,483 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:17:37,483 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:17:37,483 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:17:37,483 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:17:37,483 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:17:37,484 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:17:37,484 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:17:37,484 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:17:37,484 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:17:37,484 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:17:37,485 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:17:37,485 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:17:37,485 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:17:37,485 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:17:37,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:17:37,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:17:37,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:17:37,550 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:17:37,551 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:17:37,552 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label50_true-unreach-call.c [2018-10-24 02:17:37,616 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2bc68ed71/fe3ae39456c346caaa3bbbc4f7474662/FLAG956fe282b [2018-10-24 02:17:38,401 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:17:38,402 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label50_true-unreach-call.c [2018-10-24 02:17:38,432 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2bc68ed71/fe3ae39456c346caaa3bbbc4f7474662/FLAG956fe282b [2018-10-24 02:17:38,452 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2bc68ed71/fe3ae39456c346caaa3bbbc4f7474662 [2018-10-24 02:17:38,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:17:38,468 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:17:38,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:17:38,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:17:38,474 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:17:38,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:17:38" (1/1) ... [2018-10-24 02:17:38,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c2806f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:38, skipping insertion in model container [2018-10-24 02:17:38,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:17:38" (1/1) ... [2018-10-24 02:17:38,491 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:17:38,619 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:17:39,629 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:17:39,634 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:17:40,056 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:17:40,087 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:17:40,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40 WrapperNode [2018-10-24 02:17:40,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:17:40,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:17:40,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:17:40,089 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:17:40,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (1/1) ... [2018-10-24 02:17:40,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (1/1) ... [2018-10-24 02:17:40,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:17:40,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:17:40,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:17:40,493 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:17:40,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (1/1) ... [2018-10-24 02:17:40,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (1/1) ... [2018-10-24 02:17:40,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (1/1) ... [2018-10-24 02:17:40,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (1/1) ... [2018-10-24 02:17:40,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (1/1) ... [2018-10-24 02:17:40,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (1/1) ... [2018-10-24 02:17:40,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (1/1) ... [2018-10-24 02:17:40,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:17:40,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:17:40,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:17:40,714 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:17:40,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (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 02:17:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:17:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:17:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:17:40,785 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:17:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:17:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:17:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:17:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:17:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:17:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:17:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:17:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:17:49,548 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:17:49,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:17:49 BoogieIcfgContainer [2018-10-24 02:17:49,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:17:49,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:17:49,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:17:49,554 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:17:49,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:17:38" (1/3) ... [2018-10-24 02:17:49,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1926a062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:17:49, skipping insertion in model container [2018-10-24 02:17:49,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:17:40" (2/3) ... [2018-10-24 02:17:49,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1926a062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:17:49, skipping insertion in model container [2018-10-24 02:17:49,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:17:49" (3/3) ... [2018-10-24 02:17:49,558 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label50_true-unreach-call.c [2018-10-24 02:17:49,568 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:17:49,577 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:17:49,595 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:17:49,652 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:17:49,652 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:17:49,652 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:17:49,652 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:17:49,652 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:17:49,653 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:17:49,653 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:17:49,653 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:17:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 02:17:49,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-24 02:17:49,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:17:49,717 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:17:49,720 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:17:49,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:17:49,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1313897628, now seen corresponding path program 1 times [2018-10-24 02:17:49,729 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:17:49,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:17:49,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:17:49,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:17:49,781 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:17:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:17:50,225 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:17:50,385 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 02:17:50,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:17:50,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 02:17:50,388 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:17:50,394 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:17:50,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:17:50,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:17:50,415 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 02:17:57,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:17:57,297 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 02:17:57,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:17:57,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-24 02:17:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:17:57,351 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 02:17:57,351 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 02:17:57,368 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 02:17:57,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 02:17:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 02:17:57,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 02:17:57,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-10-24 02:17:57,544 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 70 [2018-10-24 02:17:57,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:17:57,545 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-10-24 02:17:57,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:17:57,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-10-24 02:17:57,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-10-24 02:17:57,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:17:57,555 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 02:17:57,555 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:17:57,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:17:57,556 INFO L82 PathProgramCache]: Analyzing trace with hash -574735317, now seen corresponding path program 1 times [2018-10-24 02:17:57,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:17:57,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:17:57,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:17:57,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:17:57,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:17:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:17:57,945 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:17:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:17:58,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:17:58,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:17:58,334 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:17:58,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:17:58,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:17:58,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:17:58,338 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-10-24 02:18:07,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:18:07,546 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-10-24 02:18:07,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:18:07,547 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2018-10-24 02:18:07,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:18:07,572 INFO L225 Difference]: With dead ends: 4419 [2018-10-24 02:18:07,572 INFO L226 Difference]: Without dead ends: 2951 [2018-10-24 02:18:07,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:18:07,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-24 02:18:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-10-24 02:18:07,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-24 02:18:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-10-24 02:18:07,697 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 159 [2018-10-24 02:18:07,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:18:07,699 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-10-24 02:18:07,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:18:07,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-10-24 02:18:07,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-24 02:18:07,708 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:18:07,708 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:18:07,709 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:18:07,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:18:07,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1205378606, now seen corresponding path program 1 times [2018-10-24 02:18:07,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:18:07,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:18:07,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:18:07,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:18:07,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:18:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:18:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:18:08,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:18:08,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:18:08,123 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:18:08,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:18:08,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:18:08,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:18:08,125 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-10-24 02:18:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:18:14,132 INFO L93 Difference]: Finished difference Result 6669 states and 11522 transitions. [2018-10-24 02:18:14,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:18:14,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2018-10-24 02:18:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:18:14,165 INFO L225 Difference]: With dead ends: 6669 [2018-10-24 02:18:14,166 INFO L226 Difference]: Without dead ends: 3747 [2018-10-24 02:18:14,177 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 02:18:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-10-24 02:18:14,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3689. [2018-10-24 02:18:14,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2018-10-24 02:18:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5891 transitions. [2018-10-24 02:18:14,305 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5891 transitions. Word has length 206 [2018-10-24 02:18:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:18:14,306 INFO L481 AbstractCegarLoop]: Abstraction has 3689 states and 5891 transitions. [2018-10-24 02:18:14,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:18:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5891 transitions. [2018-10-24 02:18:14,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-24 02:18:14,312 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:18:14,312 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:18:14,312 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:18:14,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:18:14,313 INFO L82 PathProgramCache]: Analyzing trace with hash 393503562, now seen corresponding path program 1 times [2018-10-24 02:18:14,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:18:14,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:18:14,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:18:14,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:18:14,317 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:18:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:18:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:18:14,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:18:14,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:18:14,587 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:18:14,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:18:14,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:18:14,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:18:14,589 INFO L87 Difference]: Start difference. First operand 3689 states and 5891 transitions. Second operand 6 states. [2018-10-24 02:18:20,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:18:20,443 INFO L93 Difference]: Finished difference Result 9623 states and 15373 transitions. [2018-10-24 02:18:20,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:18:20,444 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-10-24 02:18:20,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:18:20,475 INFO L225 Difference]: With dead ends: 9623 [2018-10-24 02:18:20,476 INFO L226 Difference]: Without dead ends: 5940 [2018-10-24 02:18:20,489 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 02:18:20,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2018-10-24 02:18:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5889. [2018-10-24 02:18:20,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2018-10-24 02:18:20,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 8064 transitions. [2018-10-24 02:18:20,650 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 8064 transitions. Word has length 208 [2018-10-24 02:18:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:18:20,651 INFO L481 AbstractCegarLoop]: Abstraction has 5889 states and 8064 transitions. [2018-10-24 02:18:20,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:18:20,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 8064 transitions. [2018-10-24 02:18:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-10-24 02:18:20,658 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:18:20,658 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, 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, 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] [2018-10-24 02:18:20,658 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:18:20,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:18:20,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1692616840, now seen corresponding path program 1 times [2018-10-24 02:18:20,659 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:18:20,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:18:20,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:18:20,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:18:20,660 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:18:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:18:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-24 02:18:20,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:18:20,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:18:20,934 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:18:20,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:18:20,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:18:20,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:18:20,936 INFO L87 Difference]: Start difference. First operand 5889 states and 8064 transitions. Second operand 4 states. [2018-10-24 02:18:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:18:29,261 INFO L93 Difference]: Finished difference Result 22501 states and 31632 transitions. [2018-10-24 02:18:29,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:18:29,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 266 [2018-10-24 02:18:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:18:29,346 INFO L225 Difference]: With dead ends: 22501 [2018-10-24 02:18:29,347 INFO L226 Difference]: Without dead ends: 16618 [2018-10-24 02:18:29,379 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 [2018-10-24 02:18:29,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16618 states. [2018-10-24 02:18:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16618 to 16618. [2018-10-24 02:18:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16618 states. [2018-10-24 02:18:29,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16618 states to 16618 states and 21854 transitions. [2018-10-24 02:18:29,780 INFO L78 Accepts]: Start accepts. Automaton has 16618 states and 21854 transitions. Word has length 266 [2018-10-24 02:18:29,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:18:29,781 INFO L481 AbstractCegarLoop]: Abstraction has 16618 states and 21854 transitions. [2018-10-24 02:18:29,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 02:18:29,782 INFO L276 IsEmpty]: Start isEmpty. Operand 16618 states and 21854 transitions. [2018-10-24 02:18:29,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-24 02:18:29,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:18:29,804 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, 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, 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] [2018-10-24 02:18:29,805 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:18:29,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:18:29,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1237035280, now seen corresponding path program 1 times [2018-10-24 02:18:29,805 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:18:29,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:18:29,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:18:29,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:18:29,807 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:18:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:18:30,253 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 167 proven. 61 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:18:30,254 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:18:30,254 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:18:30,255 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2018-10-24 02:18:30,259 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2083], [2085], [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], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 02:18:30,368 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:18:30,368 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:18:34,083 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:18:34,084 INFO L272 AbstractInterpreter]: Visited 138 different actions 138 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 02:18:34,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:18:34,105 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:18:36,745 INFO L232 lantSequenceWeakener]: Weakened 302 states. On average, predicates are now at 78.12% of their original sizes. [2018-10-24 02:18:36,746 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:18:37,264 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:18:37,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:18:37,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-24 02:18:37,265 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:18:37,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:18:37,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:18:37,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:18:37,267 INFO L87 Difference]: Start difference. First operand 16618 states and 21854 transitions. Second operand 7 states. [2018-10-24 02:18:40,516 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:20:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:20:25,410 INFO L93 Difference]: Finished difference Result 33935 states and 44530 transitions. [2018-10-24 02:20:25,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:20:25,411 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2018-10-24 02:20:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:20:25,471 INFO L225 Difference]: With dead ends: 33935 [2018-10-24 02:20:25,471 INFO L226 Difference]: Without dead ends: 17323 [2018-10-24 02:20:25,523 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:20:25,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17323 states. [2018-10-24 02:20:25,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17323 to 17321. [2018-10-24 02:20:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17321 states. [2018-10-24 02:20:25,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17321 states to 17321 states and 22569 transitions. [2018-10-24 02:20:25,888 INFO L78 Accepts]: Start accepts. Automaton has 17321 states and 22569 transitions. Word has length 310 [2018-10-24 02:20:25,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:20:25,889 INFO L481 AbstractCegarLoop]: Abstraction has 17321 states and 22569 transitions. [2018-10-24 02:20:25,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 02:20:25,889 INFO L276 IsEmpty]: Start isEmpty. Operand 17321 states and 22569 transitions. [2018-10-24 02:20:25,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-10-24 02:20:25,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:20:25,911 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:20:25,912 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:20:25,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:20:25,912 INFO L82 PathProgramCache]: Analyzing trace with hash 319477843, now seen corresponding path program 1 times [2018-10-24 02:20:25,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:20:25,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:20:25,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:20:25,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:20:25,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:20:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:20:26,479 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 02:20:26,683 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 02:20:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 248 proven. 283 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:20:27,391 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:20:27,392 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:20:27,392 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 498 with the following transitions: [2018-10-24 02:20:27,392 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2083], [2085], [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], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [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] [2018-10-24 02:20:27,406 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:20:27,407 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:20:39,278 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:20:39,278 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. [2018-10-24 02:20:39,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:20:39,288 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:20:45,346 INFO L232 lantSequenceWeakener]: Weakened 166 states. On average, predicates are now at 77.93% of their original sizes. [2018-10-24 02:20:45,346 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 02:21:10,454 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:21:10,461 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:21:10,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:21:10 BoogieIcfgContainer [2018-10-24 02:21:10,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:21:10,462 INFO L168 Benchmark]: Toolchain (without parser) took 211996.22 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 1.8 GB in the end (delta: -329.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 02:21:10,465 INFO L168 Benchmark]: CDTParser took 0.22 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 02:21:10,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1619.62 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 02:21:10,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 403.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -957.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 02:21:10,468 INFO L168 Benchmark]: Boogie Preprocessor took 220.55 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. [2018-10-24 02:21:10,469 INFO L168 Benchmark]: RCFGBuilder took 8835.79 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: 517.3 MB). Peak memory consumption was 517.3 MB. Max. memory is 7.1 GB. [2018-10-24 02:21:10,471 INFO L168 Benchmark]: TraceAbstraction took 200911.17 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 1.8 GB in the end (delta: -50.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 02:21:10,483 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1619.62 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 403.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -957.7 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 220.55 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 8835.79 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: 517.3 MB). Peak memory consumption was 517.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200911.17 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 1.8 GB in the end (delta: -50.9 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: 198]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 198). Cancelled while BasicCegarLoop was analyzing trace of length 498 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 200.8s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 144.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2259 SDtfs, 11310 SDslu, 897 SDs, 0 SdLazy, 21530 SolverSat, 6039 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 350 GetRequests, 315 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17321occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9969641731929065 AbsIntWeakeningRatio, 0.07204968944099378 AbsIntAvgWeakeningVarsNumRemoved, 444.3155279503106 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 134 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1219 NumberOfCodeBlocks, 1219 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1213 ConstructedInterpolants, 0 QuantifiedInterpolants, 783805 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 576/637 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown