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/Problem17_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:54:37,249 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:54:37,254 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:54:37,266 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:54:37,267 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:54:37,268 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:54:37,269 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:54:37,271 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:54:37,273 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:54:37,274 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:54:37,275 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:54:37,275 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:54:37,276 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:54:37,280 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:54:37,281 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:54:37,282 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:54:37,283 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:54:37,288 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:54:37,292 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:54:37,294 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:54:37,300 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:54:37,302 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:54:37,305 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:54:37,305 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:54:37,305 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:54:37,309 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:54:37,310 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:54:37,315 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:54:37,316 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:54:37,317 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:54:37,317 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:54:37,320 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:54:37,320 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:54:37,320 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:54:37,321 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:54:37,322 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:54:37,322 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 18:54:37,348 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:54:37,349 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:54:37,350 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:54:37,350 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:54:37,351 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:54:37,351 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:54:37,351 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:54:37,352 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:54:37,352 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:54:37,352 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:54:37,352 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:54:37,353 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:54:37,353 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:54:37,353 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:54:37,354 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:54:37,354 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:54:37,354 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:54:37,354 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:54:37,354 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:54:37,355 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:54:37,355 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:54:37,355 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:54:37,355 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:54:37,356 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:54:37,356 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:54:37,356 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:54:37,356 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:54:37,356 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:54:37,357 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:54:37,357 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:54:37,357 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:54:37,357 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:54:37,357 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:54:37,358 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:54:37,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:54:37,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:54:37,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:54:37,427 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:54:37,427 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:54:37,428 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label52_false-unreach-call.c [2018-10-24 18:54:37,495 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf091fbc9/48101c574272498385c7c8fd46da2f47/FLAG62e7e019a [2018-10-24 18:54:38,192 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:54:38,193 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label52_false-unreach-call.c [2018-10-24 18:54:38,224 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf091fbc9/48101c574272498385c7c8fd46da2f47/FLAG62e7e019a [2018-10-24 18:54:38,243 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cf091fbc9/48101c574272498385c7c8fd46da2f47 [2018-10-24 18:54:38,256 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:54:38,258 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:54:38,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:54:38,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:54:38,265 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:54:38,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:54:38" (1/1) ... [2018-10-24 18:54:38,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:38, skipping insertion in model container [2018-10-24 18:54:38,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:54:38" (1/1) ... [2018-10-24 18:54:38,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:54:38,414 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:54:39,354 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:54:39,359 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:54:39,774 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:54:39,800 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:54:39,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39 WrapperNode [2018-10-24 18:54:39,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:54:39,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:54:39,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:54:39,803 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:54:39,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (1/1) ... [2018-10-24 18:54:39,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (1/1) ... [2018-10-24 18:54:40,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:54:40,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:54:40,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:54:40,264 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:54:40,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (1/1) ... [2018-10-24 18:54:40,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (1/1) ... [2018-10-24 18:54:40,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (1/1) ... [2018-10-24 18:54:40,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (1/1) ... [2018-10-24 18:54:40,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (1/1) ... [2018-10-24 18:54:40,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (1/1) ... [2018-10-24 18:54:40,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (1/1) ... [2018-10-24 18:54:40,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:54:40,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:54:40,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:54:40,574 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:54:40,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (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 18:54:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:54:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:54:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:54:40,651 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:54:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:54:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:54:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:54:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:54:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:54:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:54:53,672 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:54:53,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:54:53 BoogieIcfgContainer [2018-10-24 18:54:53,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:54:53,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:54:53,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:54:53,680 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:54:53,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:54:38" (1/3) ... [2018-10-24 18:54:53,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:54:53, skipping insertion in model container [2018-10-24 18:54:53,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:54:39" (2/3) ... [2018-10-24 18:54:53,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:54:53, skipping insertion in model container [2018-10-24 18:54:53,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:54:53" (3/3) ... [2018-10-24 18:54:53,684 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label52_false-unreach-call.c [2018-10-24 18:54:53,695 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:54:53,704 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:54:53,722 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:54:53,767 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:54:53,767 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:54:53,767 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:54:53,767 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:54:53,768 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:54:53,768 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:54:53,768 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:54:53,768 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:54:53,805 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 18:54:53,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-10-24 18:54:53,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:54:53,813 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:54:53,817 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:54:53,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:54:53,823 INFO L82 PathProgramCache]: Analyzing trace with hash -551106482, now seen corresponding path program 1 times [2018-10-24 18:54:53,825 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:54:53,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:53,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:54:53,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:54:53,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:54:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:54:54,104 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 18:54:54,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:54:54,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:54:54,108 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:54:54,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:54:54,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:54:54,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:54:54,131 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 3 states. [2018-10-24 18:55:01,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:55:01,346 INFO L93 Difference]: Finished difference Result 1678 states and 3070 transitions. [2018-10-24 18:55:01,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:55:01,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-10-24 18:55:01,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:55:01,380 INFO L225 Difference]: With dead ends: 1678 [2018-10-24 18:55:01,381 INFO L226 Difference]: Without dead ends: 1072 [2018-10-24 18:55:01,393 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:55:01,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2018-10-24 18:55:01,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1066. [2018-10-24 18:55:01,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2018-10-24 18:55:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1679 transitions. [2018-10-24 18:55:01,536 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1679 transitions. Word has length 13 [2018-10-24 18:55:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:55:01,536 INFO L481 AbstractCegarLoop]: Abstraction has 1066 states and 1679 transitions. [2018-10-24 18:55:01,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:55:01,537 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1679 transitions. [2018-10-24 18:55:01,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-24 18:55:01,543 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:55:01,544 INFO L375 BasicCegarLoop]: trace histogram [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 18:55:01,544 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:55:01,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:55:01,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1732065119, now seen corresponding path program 1 times [2018-10-24 18:55:01,545 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:55:01,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:55:01,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:55:01,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:55:01,548 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:55:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:55:01,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:55:01,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:55:01,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:55:01,976 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:55:01,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:55:01,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:55:01,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:55:01,979 INFO L87 Difference]: Start difference. First operand 1066 states and 1679 transitions. Second operand 5 states. [2018-10-24 18:55:13,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:55:13,456 INFO L93 Difference]: Finished difference Result 3071 states and 4917 transitions. [2018-10-24 18:55:13,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:55:13,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2018-10-24 18:55:13,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:55:13,473 INFO L225 Difference]: With dead ends: 3071 [2018-10-24 18:55:13,473 INFO L226 Difference]: Without dead ends: 2011 [2018-10-24 18:55:13,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:55:13,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2018-10-24 18:55:13,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1985. [2018-10-24 18:55:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1985 states. [2018-10-24 18:55:13,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2933 transitions. [2018-10-24 18:55:13,663 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2933 transitions. Word has length 85 [2018-10-24 18:55:13,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:55:13,664 INFO L481 AbstractCegarLoop]: Abstraction has 1985 states and 2933 transitions. [2018-10-24 18:55:13,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:55:13,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2933 transitions. [2018-10-24 18:55:13,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-24 18:55:13,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:55:13,671 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:55:13,671 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:55:13,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:55:13,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1334448071, now seen corresponding path program 1 times [2018-10-24 18:55:13,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:55:13,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:55:13,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:55:13,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:55:13,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:55:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:55:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:55:13,930 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:55:13,930 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:55:13,931 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 89 with the following transitions: [2018-10-24 18:55:13,934 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [714], [716], [719], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 18:55:14,050 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:55:14,051 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:55:15,539 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:55:35,080 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:55:35,081 INFO L272 AbstractInterpreter]: Visited 83 different actions 543 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 18:55:35,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:55:35,096 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:55:35,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:55:35,097 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 18:55:35,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:55:35,117 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:55:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:55:35,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:56:01,969 WARN L179 SmtUtils]: Spent 24.28 s on a formula simplification. DAG size of input: 135 DAG size of output: 98 [2018-10-24 18:56:22,222 WARN L179 SmtUtils]: Spent 16.11 s on a formula simplification. DAG size of input: 98 DAG size of output: 73 [2018-10-24 18:56:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:56:22,323 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:56:24,995 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-10-24 18:56:25,047 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-10-24 18:56:27,758 WARN L179 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-10-24 18:56:28,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:56:28,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 18:56:28,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2018-10-24 18:56:28,095 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:56:28,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:56:28,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:56:28,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=137, Unknown=3, NotChecked=0, Total=182 [2018-10-24 18:56:28,096 INFO L87 Difference]: Start difference. First operand 1985 states and 2933 transitions. Second operand 6 states. [2018-10-24 18:56:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:56:46,006 INFO L93 Difference]: Finished difference Result 7613 states and 11599 transitions. [2018-10-24 18:56:46,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 18:56:46,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-10-24 18:56:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:56:46,044 INFO L225 Difference]: With dead ends: 7613 [2018-10-24 18:56:46,044 INFO L226 Difference]: Without dead ends: 5634 [2018-10-24 18:56:46,060 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 52.2s TimeCoverageRelationStatistics Valid=42, Invalid=137, Unknown=3, NotChecked=0, Total=182 [2018-10-24 18:56:46,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2018-10-24 18:56:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 5587. [2018-10-24 18:56:46,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5587 states. [2018-10-24 18:56:46,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5587 states to 5587 states and 8039 transitions. [2018-10-24 18:56:46,226 INFO L78 Accepts]: Start accepts. Automaton has 5587 states and 8039 transitions. Word has length 88 [2018-10-24 18:56:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:56:46,227 INFO L481 AbstractCegarLoop]: Abstraction has 5587 states and 8039 transitions. [2018-10-24 18:56:46,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:56:46,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5587 states and 8039 transitions. [2018-10-24 18:56:46,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 18:56:46,229 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:56:46,229 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:56:46,232 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:56:46,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:56:46,233 INFO L82 PathProgramCache]: Analyzing trace with hash -2054508945, now seen corresponding path program 1 times [2018-10-24 18:56:46,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:56:46,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:56:46,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:56:46,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:56:46,234 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:56:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:56:46,558 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:56:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:56:46,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:56:46,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:56:46,940 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:56:46,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:56:46,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:56:46,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:56:46,944 INFO L87 Difference]: Start difference. First operand 5587 states and 8039 transitions. Second operand 6 states. [2018-10-24 18:56:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:56:54,629 INFO L93 Difference]: Finished difference Result 13484 states and 19712 transitions. [2018-10-24 18:56:54,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:56:54,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-24 18:56:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:56:54,674 INFO L225 Difference]: With dead ends: 13484 [2018-10-24 18:56:54,675 INFO L226 Difference]: Without dead ends: 7903 [2018-10-24 18:56:54,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:56:54,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7903 states. [2018-10-24 18:56:54,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7903 to 7830. [2018-10-24 18:56:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7830 states. [2018-10-24 18:56:54,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7830 states to 7830 states and 9995 transitions. [2018-10-24 18:56:54,909 INFO L78 Accepts]: Start accepts. Automaton has 7830 states and 9995 transitions. Word has length 93 [2018-10-24 18:56:54,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:56:54,910 INFO L481 AbstractCegarLoop]: Abstraction has 7830 states and 9995 transitions. [2018-10-24 18:56:54,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:56:54,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7830 states and 9995 transitions. [2018-10-24 18:56:54,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 18:56:54,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:56:54,917 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:56:54,918 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:56:54,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:56:54,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1050846696, now seen corresponding path program 1 times [2018-10-24 18:56:54,918 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:56:54,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:56:54,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:56:54,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:56:54,920 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:56:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:56:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 18:56:55,473 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:56:55,473 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:56:55,473 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-10-24 18:56:55,474 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [714], [716], [719], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1227], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 18:56:55,480 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:56:55,480 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:56:57,010 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:57:23,633 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:57:23,634 INFO L272 AbstractInterpreter]: Visited 97 different actions 468 times. Merged at 7 different actions 29 times. Widened at 1 different actions 1 times. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-24 18:57:23,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:23,641 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:57:23,641 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:57:23,641 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:57:23,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:23,650 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:57:23,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:23,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:57:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 18:57:23,966 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:57:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 17 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:57:24,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 18:57:24,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2018-10-24 18:57:24,722 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 18:57:24,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:57:24,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:57:24,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-10-24 18:57:24,724 INFO L87 Difference]: Start difference. First operand 7830 states and 9995 transitions. Second operand 10 states. [2018-10-24 18:57:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:57:51,683 INFO L93 Difference]: Finished difference Result 34701 states and 47505 transitions. [2018-10-24 18:57:51,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 18:57:51,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 177 [2018-10-24 18:57:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:57:51,866 INFO L225 Difference]: With dead ends: 34701 [2018-10-24 18:57:51,867 INFO L226 Difference]: Without dead ends: 26877 [2018-10-24 18:57:51,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 347 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2018-10-24 18:57:52,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26877 states. [2018-10-24 18:57:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26877 to 26676. [2018-10-24 18:57:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26676 states. [2018-10-24 18:57:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26676 states to 26676 states and 33548 transitions. [2018-10-24 18:57:52,823 INFO L78 Accepts]: Start accepts. Automaton has 26676 states and 33548 transitions. Word has length 177 [2018-10-24 18:57:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:57:52,825 INFO L481 AbstractCegarLoop]: Abstraction has 26676 states and 33548 transitions. [2018-10-24 18:57:52,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 18:57:52,826 INFO L276 IsEmpty]: Start isEmpty. Operand 26676 states and 33548 transitions. [2018-10-24 18:57:52,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-24 18:57:52,832 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:52,835 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:57:52,835 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:52,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:52,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1979567971, now seen corresponding path program 1 times [2018-10-24 18:57:52,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:52,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:52,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:52,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:52,838 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:53,169 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:57:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 7 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:57:53,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:57:53,834 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:57:53,834 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-10-24 18:57:53,834 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [714], [716], [719], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 18:57:53,840 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:57:53,841 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:57:54,616 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:58:31,659 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 18:58:31,659 INFO L272 AbstractInterpreter]: Visited 119 different actions 795 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 18:58:31,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:58:31,663 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 18:58:31,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:58:31,663 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:58:31,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:58:31,672 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:58:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:58:31,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:58:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 18:58:31,836 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 18:58:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 18:58:31,987 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:58:31,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-10-24 18:58:31,987 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:58:31,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:58:31,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:58:31,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:58:31,988 INFO L87 Difference]: Start difference. First operand 26676 states and 33548 transitions. Second operand 3 states. Received shutdown request... [2018-10-24 18:58:35,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:58:35,243 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:58:35,249 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:58:35,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:58:35 BoogieIcfgContainer [2018-10-24 18:58:35,250 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:58:35,250 INFO L168 Benchmark]: Toolchain (without parser) took 236993.77 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -837.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 18:58:35,252 INFO L168 Benchmark]: CDTParser took 0.21 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 18:58:35,252 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1542.59 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:58:35,253 INFO L168 Benchmark]: Boogie Procedure Inliner took 460.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -944.7 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:58:35,254 INFO L168 Benchmark]: Boogie Preprocessor took 310.07 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:58:35,255 INFO L168 Benchmark]: RCFGBuilder took 13101.56 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: 476.3 MB). Peak memory consumption was 476.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:58:35,256 INFO L168 Benchmark]: TraceAbstraction took 221573.45 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -534.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 18:58:35,261 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1542.59 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 460.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 794.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -944.7 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 310.07 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13101.56 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: 476.3 MB). Peak memory consumption was 476.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221573.45 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -534.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 26]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 26). Cancelled while BasicCegarLoop was constructing difference of abstraction (26676states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (26703 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 221.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 75.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2009 SDtfs, 12183 SDslu, 1752 SDs, 0 SdLazy, 20612 SolverSat, 5835 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 67.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 982 GetRequests, 921 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 55.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26676occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 87.1s AbstIntTime, 3 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 353 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 56.7s InterpolantComputationTime, 1117 NumberOfCodeBlocks, 1117 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1568 ConstructedInterpolants, 180 QuantifiedInterpolants, 1510723 SizeOfPredicates, 7 NumberOfNonLiveVariables, 998 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 392/555 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown