java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:50:05,613 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:50:05,615 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:50:05,627 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:50:05,628 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:50:05,629 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:50:05,630 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:50:05,632 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:50:05,633 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:50:05,634 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:50:05,635 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:50:05,635 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:50:05,636 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:50:05,637 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:50:05,640 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:50:05,641 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:50:05,641 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:50:05,643 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:50:05,645 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:50:05,647 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:50:05,648 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:50:05,649 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:50:05,652 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:50:05,652 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:50:05,652 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:50:05,653 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:50:05,654 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:50:05,655 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:50:05,656 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:50:05,658 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:50:05,658 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:50:05,659 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:50:05,659 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:50:05,660 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:50:05,661 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:50:05,662 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:50:05,662 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:50:05,685 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:50:05,685 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:50:05,686 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:50:05,686 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:50:05,687 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:50:05,687 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:50:05,687 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:50:05,687 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:50:05,688 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:50:05,688 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:50:05,688 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:50:05,688 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:50:05,688 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:50:05,689 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:50:05,689 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:50:05,690 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:50:05,690 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:50:05,690 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:50:05,690 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:50:05,690 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:50:05,691 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:50:05,691 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:50:05,691 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:50:05,691 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:50:05,692 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:50:05,692 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:50:05,692 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:50:05,692 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:50:05,692 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:50:05,693 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:50:05,693 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:50:05,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:50:05,694 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:50:05,694 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:50:05,694 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:50:05,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:50:05,778 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:50:05,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:50:05,784 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:50:05,784 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:50:05,785 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label37_false-unreach-call.c [2018-11-12 16:50:05,857 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edba1ac23/8b408e9f5fcd456399901e10a0ecc96d/FLAGc1b97045e [2018-11-12 16:50:06,613 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:50:06,617 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label37_false-unreach-call.c [2018-11-12 16:50:06,639 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edba1ac23/8b408e9f5fcd456399901e10a0ecc96d/FLAGc1b97045e [2018-11-12 16:50:06,656 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edba1ac23/8b408e9f5fcd456399901e10a0ecc96d [2018-11-12 16:50:06,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:50:06,670 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:50:06,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:50:06,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:50:06,675 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:50:06,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:50:06" (1/1) ... [2018-11-12 16:50:06,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dc0ec14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:06, skipping insertion in model container [2018-11-12 16:50:06,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:50:06" (1/1) ... [2018-11-12 16:50:06,692 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:50:06,810 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:50:07,807 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:50:07,812 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:50:08,220 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:50:08,247 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:50:08,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08 WrapperNode [2018-11-12 16:50:08,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:50:08,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:50:08,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:50:08,249 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:50:08,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (1/1) ... [2018-11-12 16:50:08,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (1/1) ... [2018-11-12 16:50:08,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:50:08,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:50:08,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:50:08,539 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:50:08,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (1/1) ... [2018-11-12 16:50:08,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (1/1) ... [2018-11-12 16:50:08,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (1/1) ... [2018-11-12 16:50:08,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (1/1) ... [2018-11-12 16:50:08,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (1/1) ... [2018-11-12 16:50:08,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (1/1) ... [2018-11-12 16:50:08,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (1/1) ... [2018-11-12 16:50:08,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:50:08,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:50:08,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:50:08,756 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:50:08,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 16:50:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:50:08,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:50:08,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:50:08,828 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:50:08,828 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:50:08,828 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:50:08,828 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:50:08,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:50:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:50:08,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:50:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:50:17,783 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:50:17,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:50:17 BoogieIcfgContainer [2018-11-12 16:50:17,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:50:17,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:50:17,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:50:17,790 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:50:17,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:50:06" (1/3) ... [2018-11-12 16:50:17,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bc75bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:50:17, skipping insertion in model container [2018-11-12 16:50:17,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:50:08" (2/3) ... [2018-11-12 16:50:17,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bc75bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:50:17, skipping insertion in model container [2018-11-12 16:50:17,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:50:17" (3/3) ... [2018-11-12 16:50:17,796 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label37_false-unreach-call.c [2018-11-12 16:50:17,807 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:50:17,818 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:50:17,837 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:50:17,889 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:50:17,890 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:50:17,890 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:50:17,890 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:50:17,890 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:50:17,890 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:50:17,890 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:50:17,891 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:50:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-12 16:50:17,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-12 16:50:17,960 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:50:17,961 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] [2018-11-12 16:50:17,966 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:50:17,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:50:17,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1359404802, now seen corresponding path program 1 times [2018-11-12 16:50:17,976 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:50:18,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:50:18,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:50:18,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:50:18,038 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:50:18,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:50:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:50:18,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:50:18,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:50:18,456 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:50:18,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:50:18,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:50:18,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:50:18,481 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-12 16:50:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:50:27,574 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-11-12 16:50:27,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:50:27,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-12 16:50:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:50:27,608 INFO L225 Difference]: With dead ends: 2137 [2018-11-12 16:50:27,608 INFO L226 Difference]: Without dead ends: 1527 [2018-11-12 16:50:27,618 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:50:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-11-12 16:50:27,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-11-12 16:50:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-11-12 16:50:27,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-11-12 16:50:27,778 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 25 [2018-11-12 16:50:27,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:50:27,778 INFO L480 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-11-12 16:50:27,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:50:27,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-11-12 16:50:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-11-12 16:50:27,784 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:50:27,785 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:50:27,785 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:50:27,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:50:27,785 INFO L82 PathProgramCache]: Analyzing trace with hash -72391217, now seen corresponding path program 1 times [2018-11-12 16:50:27,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:50:27,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:50:27,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:50:27,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:50:27,787 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:50:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:50:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:50:28,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:50:28,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:50:28,067 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:50:28,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:50:28,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:50:28,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:50:28,070 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-11-12 16:50:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:50:37,263 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-11-12 16:50:37,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:50:37,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2018-11-12 16:50:37,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:50:37,291 INFO L225 Difference]: With dead ends: 4413 [2018-11-12 16:50:37,291 INFO L226 Difference]: Without dead ends: 2906 [2018-11-12 16:50:37,297 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:50:37,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-11-12 16:50:37,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-11-12 16:50:37,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-11-12 16:50:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-11-12 16:50:37,381 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 97 [2018-11-12 16:50:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:50:37,381 INFO L480 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-11-12 16:50:37,382 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:50:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-11-12 16:50:37,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-12 16:50:37,385 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:50:37,386 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:50:37,386 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:50:37,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:50:37,386 INFO L82 PathProgramCache]: Analyzing trace with hash 902926633, now seen corresponding path program 1 times [2018-11-12 16:50:37,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:50:37,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:50:37,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:50:37,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:50:37,388 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:50:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:50:37,919 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:50:37,919 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:50:37,919 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:50:37,921 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 101 with the following transitions: [2018-11-12 16:50:37,923 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [810], [812], [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] [2018-11-12 16:50:37,990 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:50:37,990 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:50:38,474 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:50:39,120 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:50:39,121 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Performed 3924 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3924 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:50:39,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:50:39,156 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:50:39,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:50:39,157 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 16:50:39,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:50:39,175 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:50:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:50:39,271 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:50:55,181 WARN L179 SmtUtils]: Spent 15.41 s on a formula simplification. DAG size of input: 135 DAG size of output: 83 [2018-11-12 16:50:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:50:57,438 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:50:57,799 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-11-12 16:50:58,546 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-11-12 16:50:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:50:58,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 16:50:58,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-11-12 16:50:58,896 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:50:58,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:50:58,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:50:58,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=163, Unknown=1, NotChecked=0, Total=210 [2018-11-12 16:50:58,897 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 6 states. [2018-11-12 16:51:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:51:20,650 INFO L93 Difference]: Finished difference Result 11147 states and 17010 transitions. [2018-11-12 16:51:20,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 16:51:20,653 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-11-12 16:51:20,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:51:20,711 INFO L225 Difference]: With dead ends: 11147 [2018-11-12 16:51:20,712 INFO L226 Difference]: Without dead ends: 8280 [2018-11-12 16:51:20,734 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=46, Invalid=163, Unknown=1, NotChecked=0, Total=210 [2018-11-12 16:51:20,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8280 states. [2018-11-12 16:51:20,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8280 to 8241. [2018-11-12 16:51:20,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8241 states. [2018-11-12 16:51:20,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 12219 transitions. [2018-11-12 16:51:20,968 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 12219 transitions. Word has length 100 [2018-11-12 16:51:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:51:20,969 INFO L480 AbstractCegarLoop]: Abstraction has 8241 states and 12219 transitions. [2018-11-12 16:51:20,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:51:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 12219 transitions. [2018-11-12 16:51:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-12 16:51:20,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:51:20,981 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:51:20,982 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:51:20,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:51:20,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1080098981, now seen corresponding path program 1 times [2018-11-12 16:51:20,982 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:51:20,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:51:20,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:51:20,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:51:20,984 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:51:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:51:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:51:21,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:51:21,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:51:21,262 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:51:21,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:51:21,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:51:21,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:51:21,263 INFO L87 Difference]: Start difference. First operand 8241 states and 12219 transitions. Second operand 6 states. [2018-11-12 16:51:26,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:51:26,402 INFO L93 Difference]: Finished difference Result 20122 states and 30328 transitions. [2018-11-12 16:51:26,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:51:26,402 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-11-12 16:51:26,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:51:26,467 INFO L225 Difference]: With dead ends: 20122 [2018-11-12 16:51:26,467 INFO L226 Difference]: Without dead ends: 11887 [2018-11-12 16:51:26,507 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:51:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2018-11-12 16:51:26,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 11811. [2018-11-12 16:51:26,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11811 states. [2018-11-12 16:51:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11811 states to 11811 states and 15398 transitions. [2018-11-12 16:51:26,815 INFO L78 Accepts]: Start accepts. Automaton has 11811 states and 15398 transitions. Word has length 175 [2018-11-12 16:51:26,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:51:26,815 INFO L480 AbstractCegarLoop]: Abstraction has 11811 states and 15398 transitions. [2018-11-12 16:51:26,815 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:51:26,816 INFO L276 IsEmpty]: Start isEmpty. Operand 11811 states and 15398 transitions. [2018-11-12 16:51:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-12 16:51:26,819 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:51:26,820 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:51:26,820 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:51:26,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:51:26,820 INFO L82 PathProgramCache]: Analyzing trace with hash 109060680, now seen corresponding path program 1 times [2018-11-12 16:51:26,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:51:26,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:51:26,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:51:26,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:51:26,822 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:51:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:51:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-12 16:51:27,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:51:27,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:51:27,053 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:51:27,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:51:27,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:51:27,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:51:27,054 INFO L87 Difference]: Start difference. First operand 11811 states and 15398 transitions. Second operand 3 states. [2018-11-12 16:51:32,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:51:32,869 INFO L93 Difference]: Finished difference Result 31083 states and 41354 transitions. [2018-11-12 16:51:32,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:51:32,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2018-11-12 16:51:32,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:51:32,966 INFO L225 Difference]: With dead ends: 31083 [2018-11-12 16:51:32,967 INFO L226 Difference]: Without dead ends: 19278 [2018-11-12 16:51:33,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:51:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19278 states. [2018-11-12 16:51:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19278 to 19277. [2018-11-12 16:51:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19277 states. [2018-11-12 16:51:33,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19277 states to 19277 states and 24007 transitions. [2018-11-12 16:51:33,527 INFO L78 Accepts]: Start accepts. Automaton has 19277 states and 24007 transitions. Word has length 189 [2018-11-12 16:51:33,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:51:33,528 INFO L480 AbstractCegarLoop]: Abstraction has 19277 states and 24007 transitions. [2018-11-12 16:51:33,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:51:33,528 INFO L276 IsEmpty]: Start isEmpty. Operand 19277 states and 24007 transitions. [2018-11-12 16:51:33,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-12 16:51:33,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:51:33,535 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:51:33,536 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:51:33,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:51:33,698 INFO L82 PathProgramCache]: Analyzing trace with hash -596999475, now seen corresponding path program 1 times [2018-11-12 16:51:33,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:51:33,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:51:33,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:51:33,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:51:33,699 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:51:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:51:34,009 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:51:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 31 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:51:34,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:51:34,808 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:51:34,808 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-12 16:51:34,809 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [810], [812], [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] [2018-11-12 16:51:34,815 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:51:34,815 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:51:34,937 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:51:35,837 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:51:35,838 INFO L272 AbstractInterpreter]: Visited 119 different actions 343 times. Merged at 5 different actions 9 times. Never widened. Performed 5993 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5993 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:51:35,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:51:35,875 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:51:35,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:51:35,876 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 16:51:35,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:51:35,895 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:51:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:51:35,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:51:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 16:51:36,145 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:51:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 16:51:36,229 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:51:36,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-12 16:51:36,229 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:51:36,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:51:36,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:51:36,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:51:36,230 INFO L87 Difference]: Start difference. First operand 19277 states and 24007 transitions. Second operand 3 states. [2018-11-12 16:51:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:51:40,664 INFO L93 Difference]: Finished difference Result 38548 states and 48123 transitions. [2018-11-12 16:51:40,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:51:40,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-11-12 16:51:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:51:40,724 INFO L225 Difference]: With dead ends: 38548 [2018-11-12 16:51:40,724 INFO L226 Difference]: Without dead ends: 19277 [2018-11-12 16:51:40,780 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 420 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:51:40,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19277 states. [2018-11-12 16:51:41,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19277 to 18409. [2018-11-12 16:51:41,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18409 states. [2018-11-12 16:51:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18409 states to 18409 states and 22095 transitions. [2018-11-12 16:51:41,152 INFO L78 Accepts]: Start accepts. Automaton has 18409 states and 22095 transitions. Word has length 210 [2018-11-12 16:51:41,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:51:41,153 INFO L480 AbstractCegarLoop]: Abstraction has 18409 states and 22095 transitions. [2018-11-12 16:51:41,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:51:41,153 INFO L276 IsEmpty]: Start isEmpty. Operand 18409 states and 22095 transitions. [2018-11-12 16:51:41,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-11-12 16:51:41,167 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:51:41,168 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 16:51:41,168 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:51:41,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:51:41,169 INFO L82 PathProgramCache]: Analyzing trace with hash 337738264, now seen corresponding path program 1 times [2018-11-12 16:51:41,169 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:51:41,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:51:41,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:51:41,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:51:41,170 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:51:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:51:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2018-11-12 16:51:41,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:51:41,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:51:41,670 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:51:41,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:51:41,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:51:41,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:51:41,672 INFO L87 Difference]: Start difference. First operand 18409 states and 22095 transitions. Second operand 3 states. [2018-11-12 16:51:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:51:51,673 INFO L93 Difference]: Finished difference Result 42982 states and 52540 transitions. [2018-11-12 16:51:51,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:51:51,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 309 [2018-11-12 16:51:51,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:51:51,738 INFO L225 Difference]: With dead ends: 42982 [2018-11-12 16:51:51,738 INFO L226 Difference]: Without dead ends: 24579 [2018-11-12 16:51:51,781 INFO L604 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 [2018-11-12 16:51:51,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24579 states. [2018-11-12 16:51:52,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24579 to 24577. [2018-11-12 16:51:52,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24577 states. [2018-11-12 16:51:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24577 states to 24577 states and 29271 transitions. [2018-11-12 16:51:52,212 INFO L78 Accepts]: Start accepts. Automaton has 24577 states and 29271 transitions. Word has length 309 [2018-11-12 16:51:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:51:52,213 INFO L480 AbstractCegarLoop]: Abstraction has 24577 states and 29271 transitions. [2018-11-12 16:51:52,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:51:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand 24577 states and 29271 transitions. [2018-11-12 16:51:52,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-11-12 16:51:52,232 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:51:52,233 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:51:52,233 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:51:52,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:51:52,234 INFO L82 PathProgramCache]: Analyzing trace with hash 948292860, now seen corresponding path program 1 times [2018-11-12 16:51:52,234 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:51:52,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:51:52,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:51:52,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:51:52,235 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:51:52,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:51:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-11-12 16:51:52,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:51:52,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:51:52,701 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:51:52,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:51:52,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:51:52,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:51:52,702 INFO L87 Difference]: Start difference. First operand 24577 states and 29271 transitions. Second operand 4 states. [2018-11-12 16:52:01,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:52:01,866 INFO L93 Difference]: Finished difference Result 73750 states and 90918 transitions. [2018-11-12 16:52:01,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:52:01,867 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 350 [2018-11-12 16:52:01,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:52:02,017 INFO L225 Difference]: With dead ends: 73750 [2018-11-12 16:52:02,018 INFO L226 Difference]: Without dead ends: 49179 [2018-11-12 16:52:02,105 INFO L604 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 [2018-11-12 16:52:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49179 states. [2018-11-12 16:52:02,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49179 to 47868. [2018-11-12 16:52:02,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47868 states. [2018-11-12 16:52:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47868 states to 47868 states and 56251 transitions. [2018-11-12 16:52:02,910 INFO L78 Accepts]: Start accepts. Automaton has 47868 states and 56251 transitions. Word has length 350 [2018-11-12 16:52:02,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:52:02,911 INFO L480 AbstractCegarLoop]: Abstraction has 47868 states and 56251 transitions. [2018-11-12 16:52:02,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:52:02,911 INFO L276 IsEmpty]: Start isEmpty. Operand 47868 states and 56251 transitions. [2018-11-12 16:52:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-11-12 16:52:02,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:52:02,957 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:52:02,958 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:52:02,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:52:02,958 INFO L82 PathProgramCache]: Analyzing trace with hash -445500387, now seen corresponding path program 1 times [2018-11-12 16:52:02,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:52:02,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:02,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:52:02,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:02,960 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:52:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:52:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 16:52:03,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:52:03,870 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:52:03,870 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 453 with the following transitions: [2018-11-12 16:52:03,871 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [810], [812], [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], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2092], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 16:52:03,883 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:52:03,884 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:52:03,981 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:52:07,248 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:52:07,249 INFO L272 AbstractInterpreter]: Visited 262 different actions 1307 times. Merged at 8 different actions 43 times. Widened at 1 different actions 1 times. Performed 24663 root evaluator evaluations with a maximum evaluation depth of 6. Performed 24663 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 9 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 16:52:07,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:52:07,287 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:52:07,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:52:07,288 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-12 16:52:07,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:52:07,302 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:52:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:52:07,454 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:52:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 16:52:08,040 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:52:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 230 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-12 16:52:09,019 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:52:09,019 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-12 16:52:09,019 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:52:09,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:52:09,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:52:09,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:52:09,020 INFO L87 Difference]: Start difference. First operand 47868 states and 56251 transitions. Second operand 7 states. [2018-11-12 16:52:18,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:52:18,461 INFO L93 Difference]: Finished difference Result 124152 states and 152077 transitions. [2018-11-12 16:52:18,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 16:52:18,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 452 [2018-11-12 16:52:18,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:52:19,128 INFO L225 Difference]: With dead ends: 124152 [2018-11-12 16:52:19,128 INFO L226 Difference]: Without dead ends: 76290 [2018-11-12 16:52:19,242 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 905 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2018-11-12 16:52:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76290 states. [2018-11-12 16:52:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76290 to 72640. [2018-11-12 16:52:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72640 states. [2018-11-12 16:52:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72640 states to 72640 states and 83560 transitions. [2018-11-12 16:52:20,519 INFO L78 Accepts]: Start accepts. Automaton has 72640 states and 83560 transitions. Word has length 452 [2018-11-12 16:52:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:52:20,520 INFO L480 AbstractCegarLoop]: Abstraction has 72640 states and 83560 transitions. [2018-11-12 16:52:20,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:52:20,520 INFO L276 IsEmpty]: Start isEmpty. Operand 72640 states and 83560 transitions. [2018-11-12 16:52:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2018-11-12 16:52:20,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:52:20,577 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:52:20,577 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:52:20,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:52:20,578 INFO L82 PathProgramCache]: Analyzing trace with hash 258739091, now seen corresponding path program 1 times [2018-11-12 16:52:20,578 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:52:20,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:20,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:52:20,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:20,579 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:52:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:52:21,188 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-11-12 16:52:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 60 proven. 247 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 16:52:21,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:52:21,591 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:52:21,591 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 463 with the following transitions: [2018-11-12 16:52:21,592 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [810], [812], [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], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2092], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 16:52:21,600 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:52:21,600 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:52:21,658 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:52:23,431 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:52:23,432 INFO L272 AbstractInterpreter]: Visited 262 different actions 772 times. Merged at 5 different actions 9 times. Never widened. Performed 13732 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13732 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:52:23,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:52:23,469 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:52:23,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:52:23,469 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-11-12 16:52:23,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:52:23,481 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:52:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:52:23,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:52:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-12 16:52:23,883 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:52:24,015 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-11-12 16:52:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 132 proven. 109 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-12 16:52:24,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:52:24,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 14 [2018-11-12 16:52:24,551 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:52:24,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 16:52:24,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 16:52:24,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:52:24,553 INFO L87 Difference]: Start difference. First operand 72640 states and 83560 transitions. Second operand 13 states. [2018-11-12 16:52:38,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:52:38,205 INFO L93 Difference]: Finished difference Result 168288 states and 193845 transitions. [2018-11-12 16:52:38,210 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-12 16:52:38,210 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 462 [2018-11-12 16:52:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:52:38,367 INFO L225 Difference]: With dead ends: 168288 [2018-11-12 16:52:38,367 INFO L226 Difference]: Without dead ends: 52312 [2018-11-12 16:52:38,581 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 961 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=571, Invalid=2509, Unknown=0, NotChecked=0, Total=3080 [2018-11-12 16:52:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52312 states. [2018-11-12 16:52:39,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52312 to 48776. [2018-11-12 16:52:39,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48776 states. [2018-11-12 16:52:39,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48776 states to 48776 states and 55046 transitions. [2018-11-12 16:52:39,348 INFO L78 Accepts]: Start accepts. Automaton has 48776 states and 55046 transitions. Word has length 462 [2018-11-12 16:52:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:52:39,349 INFO L480 AbstractCegarLoop]: Abstraction has 48776 states and 55046 transitions. [2018-11-12 16:52:39,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-12 16:52:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 48776 states and 55046 transitions. [2018-11-12 16:52:39,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2018-11-12 16:52:39,377 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:52:39,378 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:52:39,378 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:52:39,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:52:39,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1262653227, now seen corresponding path program 1 times [2018-11-12 16:52:39,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:52:39,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:39,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:52:39,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:52:39,380 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:52:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:52:40,278 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-12 16:52:40,547 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-12 16:52:40,845 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-12 16:52:41,145 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-12 16:52:41,892 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 60 proven. 316 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 16:52:41,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:52:41,893 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:52:41,893 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 519 with the following transitions: [2018-11-12 16:52:41,893 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [810], [812], [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], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1626], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2092], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 16:52:41,898 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:52:41,898 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:52:41,966 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:52:44,588 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:52:44,588 INFO L272 AbstractInterpreter]: Visited 262 different actions 1299 times. Merged at 8 different actions 37 times. Never widened. Performed 23976 root evaluator evaluations with a maximum evaluation depth of 6. Performed 23976 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 9 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 16:52:44,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:52:44,597 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:52:44,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:52:44,597 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:52:44,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:52:44,608 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:52:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:52:44,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:52:45,228 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 395 DAG size of output: 55 [2018-11-12 16:52:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 16:52:45,483 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:52:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 16:52:46,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:52:46,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2018-11-12 16:52:46,185 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:52:46,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 16:52:46,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 16:52:46,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2018-11-12 16:52:46,186 INFO L87 Difference]: Start difference. First operand 48776 states and 55046 transitions. Second operand 13 states. [2018-11-12 16:52:46,446 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2018-11-12 16:52:47,001 WARN L179 SmtUtils]: Spent 518.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-11-12 16:53:17,014 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 Received shutdown request... [2018-11-12 16:54:01,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 16:54:01,649 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:54:01,654 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:54:01,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:54:01 BoogieIcfgContainer [2018-11-12 16:54:01,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:54:01,656 INFO L168 Benchmark]: Toolchain (without parser) took 234986.85 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -928.2 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-12 16:54:01,657 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:54:01,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1576.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:54:01,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 290.06 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 746.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -927.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:54:01,660 INFO L168 Benchmark]: Boogie Preprocessor took 216.56 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:54:01,660 INFO L168 Benchmark]: RCFGBuilder took 9029.71 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 454.7 MB). Peak memory consumption was 454.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:54:01,661 INFO L168 Benchmark]: TraceAbstraction took 223868.50 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -606.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:54:01,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1576.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 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 290.06 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 746.6 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -927.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 216.56 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9029.71 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 454.7 MB). Peak memory consumption was 454.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223868.50 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 2.3 GB in the end (delta: -606.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 62). Cancelled while BasicCegarLoop was constructing difference of abstraction (48776states) and FLOYD_HOARE automaton (currently 33 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (35714 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 223.7s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 175.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4869 SDtfs, 28795 SDslu, 3541 SDs, 0 SdLazy, 38650 SolverSat, 9267 SolverUnsat, 85 SolverUnknown, 0 SolverNotchecked, 155.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3714 GetRequests, 3555 SyntacticMatches, 16 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 27.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72640occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.3s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.9s AutomataMinimizationTime, 10 MinimizatonAttempts, 9530 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 29.7s InterpolantComputationTime, 4629 NumberOfCodeBlocks, 4629 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6350 ConstructedInterpolants, 106 QuantifiedInterpolants, 12227012 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2790 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 3227/4023 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown