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_label06_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:28:33,723 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:28:33,728 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:28:33,747 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:28:33,747 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:28:33,748 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:28:33,749 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:28:33,751 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:28:33,753 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:28:33,754 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:28:33,755 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:28:33,755 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:28:33,756 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:28:33,757 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:28:33,758 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:28:33,759 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:28:33,760 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:28:33,762 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:28:33,764 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:28:33,766 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:28:33,767 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:28:33,768 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:28:33,771 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:28:33,771 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:28:33,771 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:28:33,772 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:28:33,774 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:28:33,774 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:28:33,775 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:28:33,777 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:28:33,777 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:28:33,778 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:28:33,778 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:28:33,778 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:28:33,779 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:28:33,780 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:28:33,780 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 19:28:33,808 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:28:33,809 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:28:33,810 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:28:33,810 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:28:33,810 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:28:33,810 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:28:33,810 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:28:33,811 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:28:33,811 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:28:33,811 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:28:33,811 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:28:33,811 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:28:33,812 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:28:33,812 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:28:33,813 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:28:33,813 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:28:33,813 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:28:33,813 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:28:33,813 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:28:33,813 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:28:33,814 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:28:33,814 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:28:33,814 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:28:33,814 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:28:33,814 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:28:33,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:28:33,815 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:28:33,815 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:28:33,815 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:28:33,815 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:28:33,816 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:28:33,816 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:28:33,816 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:28:33,816 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:28:33,816 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:28:33,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:28:33,885 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:28:33,888 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:28:33,890 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:28:33,890 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:28:33,891 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-11-12 19:28:33,953 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4e3b98b4/acf5dd57f42f44a88e6af0a54367f1fc/FLAGd123b8399 [2018-11-12 19:28:34,642 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:28:34,643 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label06_true-unreach-call.c [2018-11-12 19:28:34,668 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4e3b98b4/acf5dd57f42f44a88e6af0a54367f1fc/FLAGd123b8399 [2018-11-12 19:28:34,685 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4e3b98b4/acf5dd57f42f44a88e6af0a54367f1fc [2018-11-12 19:28:34,697 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:28:34,699 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:28:34,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:28:34,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:28:34,705 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:28:34,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:28:34" (1/1) ... [2018-11-12 19:28:34,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@665e3473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:34, skipping insertion in model container [2018-11-12 19:28:34,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:28:34" (1/1) ... [2018-11-12 19:28:34,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:28:34,845 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:28:35,936 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:28:35,942 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:28:36,337 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:28:36,362 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:28:36,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36 WrapperNode [2018-11-12 19:28:36,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:28:36,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:28:36,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:28:36,364 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:28:36,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (1/1) ... [2018-11-12 19:28:36,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (1/1) ... [2018-11-12 19:28:36,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:28:36,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:28:36,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:28:36,629 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:28:36,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (1/1) ... [2018-11-12 19:28:36,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (1/1) ... [2018-11-12 19:28:36,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (1/1) ... [2018-11-12 19:28:36,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (1/1) ... [2018-11-12 19:28:36,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (1/1) ... [2018-11-12 19:28:36,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (1/1) ... [2018-11-12 19:28:36,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (1/1) ... [2018-11-12 19:28:36,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:28:36,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:28:36,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:28:36,883 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:28:36,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (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 19:28:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:28:36,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:28:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:28:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:28:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:28:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:28:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:28:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:28:36,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:28:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:28:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:28:44,504 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:28:44,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:28:44 BoogieIcfgContainer [2018-11-12 19:28:44,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:28:44,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:28:44,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:28:44,510 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:28:44,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:28:34" (1/3) ... [2018-11-12 19:28:44,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b2a689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:28:44, skipping insertion in model container [2018-11-12 19:28:44,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:28:36" (2/3) ... [2018-11-12 19:28:44,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b2a689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:28:44, skipping insertion in model container [2018-11-12 19:28:44,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:28:44" (3/3) ... [2018-11-12 19:28:44,514 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label06_true-unreach-call.c [2018-11-12 19:28:44,525 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:28:44,535 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:28:44,554 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:28:44,598 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:28:44,598 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:28:44,598 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:28:44,598 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:28:44,599 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:28:44,599 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:28:44,599 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:28:44,599 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:28:44,640 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-12 19:28:44,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-12 19:28:44,648 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:28:44,650 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:28:44,653 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:28:44,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:44,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2116554596, now seen corresponding path program 1 times [2018-11-12 19:28:44,662 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:28:44,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:44,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:28:44,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:44,708 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:28:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:28:45,148 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-12 19:28:45,160 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 19:28:45,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:28:45,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:28:45,163 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:28:45,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:28:45,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:28:45,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:28:45,189 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-12 19:28:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:28:53,906 INFO L93 Difference]: Finished difference Result 2137 states and 3966 transitions. [2018-11-12 19:28:53,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:28:53,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-11-12 19:28:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:28:53,943 INFO L225 Difference]: With dead ends: 2137 [2018-11-12 19:28:53,943 INFO L226 Difference]: Without dead ends: 1527 [2018-11-12 19:28:53,955 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:28:53,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2018-11-12 19:28:54,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1513. [2018-11-12 19:28:54,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1513 states. [2018-11-12 19:28:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2344 transitions. [2018-11-12 19:28:54,128 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2344 transitions. Word has length 38 [2018-11-12 19:28:54,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:28:54,129 INFO L480 AbstractCegarLoop]: Abstraction has 1513 states and 2344 transitions. [2018-11-12 19:28:54,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:28:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2344 transitions. [2018-11-12 19:28:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-12 19:28:54,136 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:28:54,136 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:54,136 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:28:54,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:54,137 INFO L82 PathProgramCache]: Analyzing trace with hash 2036710450, now seen corresponding path program 1 times [2018-11-12 19:28:54,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:28:54,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:54,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:28:54,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:54,139 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:28:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:28:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:28:54,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:28:54,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 19:28:54,385 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:28:54,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 19:28:54,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 19:28:54,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 19:28:54,387 INFO L87 Difference]: Start difference. First operand 1513 states and 2344 transitions. Second operand 5 states. [2018-11-12 19:29:03,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:29:03,184 INFO L93 Difference]: Finished difference Result 4413 states and 7007 transitions. [2018-11-12 19:29:03,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:29:03,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2018-11-12 19:29:03,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:29:03,210 INFO L225 Difference]: With dead ends: 4413 [2018-11-12 19:29:03,210 INFO L226 Difference]: Without dead ends: 2906 [2018-11-12 19:29:03,216 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:29:03,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2906 states. [2018-11-12 19:29:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2906 to 2873. [2018-11-12 19:29:03,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2873 states. [2018-11-12 19:29:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2873 states to 2873 states and 4204 transitions. [2018-11-12 19:29:03,330 INFO L78 Accepts]: Start accepts. Automaton has 2873 states and 4204 transitions. Word has length 110 [2018-11-12 19:29:03,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:29:03,331 INFO L480 AbstractCegarLoop]: Abstraction has 2873 states and 4204 transitions. [2018-11-12 19:29:03,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 19:29:03,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2873 states and 4204 transitions. [2018-11-12 19:29:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-12 19:29:03,335 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:29:03,335 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:03,335 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:29:03,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:03,336 INFO L82 PathProgramCache]: Analyzing trace with hash -493194566, now seen corresponding path program 1 times [2018-11-12 19:29:03,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:29:03,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:03,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:03,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:03,338 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:29:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:29:03,823 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:29:03,823 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:29:03,825 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 114 with the following transitions: [2018-11-12 19:29:03,827 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [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 19:29:03,899 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:29:03,899 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:29:04,418 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:29:05,186 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:29:05,188 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Performed 3907 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3907 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 19:29:05,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:05,233 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:29:05,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:29:05,234 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 19:29:05,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:05,249 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:29:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:05,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:29:26,113 WARN L179 SmtUtils]: Spent 20.30 s on a formula simplification. DAG size of input: 135 DAG size of output: 83 [2018-11-12 19:29:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:29:28,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:29:30,857 WARN L179 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 133 DAG size of output: 16 [2018-11-12 19:29:30,942 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-11-12 19:29:33,546 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-11-12 19:29:33,874 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:29:33,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:29:33,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-11-12 19:29:33,901 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:29:33,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:29:33,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:29:33,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=163, Unknown=1, NotChecked=0, Total=210 [2018-11-12 19:29:33,904 INFO L87 Difference]: Start difference. First operand 2873 states and 4204 transitions. Second operand 6 states. [2018-11-12 19:29:49,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:29:49,142 INFO L93 Difference]: Finished difference Result 11131 states and 16951 transitions. [2018-11-12 19:29:49,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-12 19:29:49,145 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-12 19:29:49,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:29:49,206 INFO L225 Difference]: With dead ends: 11131 [2018-11-12 19:29:49,206 INFO L226 Difference]: Without dead ends: 8264 [2018-11-12 19:29:49,229 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=46, Invalid=163, Unknown=1, NotChecked=0, Total=210 [2018-11-12 19:29:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8264 states. [2018-11-12 19:29:49,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8264 to 8225. [2018-11-12 19:29:49,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8225 states. [2018-11-12 19:29:49,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8225 states to 8225 states and 12363 transitions. [2018-11-12 19:29:49,483 INFO L78 Accepts]: Start accepts. Automaton has 8225 states and 12363 transitions. Word has length 113 [2018-11-12 19:29:49,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:29:49,484 INFO L480 AbstractCegarLoop]: Abstraction has 8225 states and 12363 transitions. [2018-11-12 19:29:49,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:29:49,484 INFO L276 IsEmpty]: Start isEmpty. Operand 8225 states and 12363 transitions. [2018-11-12 19:29:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-11-12 19:29:49,493 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:29:49,494 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:49,494 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:29:49,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:49,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1553350869, now seen corresponding path program 1 times [2018-11-12 19:29:49,495 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:29:49,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:49,496 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:49,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:49,496 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:29:49,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:50,112 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:29:50,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:29:50,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:29:50,113 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:29:50,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:29:50,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:29:50,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:29:50,114 INFO L87 Difference]: Start difference. First operand 8225 states and 12363 transitions. Second operand 6 states. [2018-11-12 19:30:04,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:30:04,390 INFO L93 Difference]: Finished difference Result 26584 states and 41279 transitions. [2018-11-12 19:30:04,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:30:04,394 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2018-11-12 19:30:04,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:30:04,497 INFO L225 Difference]: With dead ends: 26584 [2018-11-12 19:30:04,498 INFO L226 Difference]: Without dead ends: 18365 [2018-11-12 19:30:04,555 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:30:04,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18365 states. [2018-11-12 19:30:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18365 to 18274. [2018-11-12 19:30:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18274 states. [2018-11-12 19:30:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18274 states to 18274 states and 24888 transitions. [2018-11-12 19:30:05,069 INFO L78 Accepts]: Start accepts. Automaton has 18274 states and 24888 transitions. Word has length 183 [2018-11-12 19:30:05,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:30:05,070 INFO L480 AbstractCegarLoop]: Abstraction has 18274 states and 24888 transitions. [2018-11-12 19:30:05,070 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:30:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 18274 states and 24888 transitions. [2018-11-12 19:30:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-12 19:30:05,079 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:30:05,080 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:30:05,080 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:30:05,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:30:05,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1998525290, now seen corresponding path program 1 times [2018-11-12 19:30:05,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:30:05,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:30:05,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:30:05,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:30:05,082 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:30:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:30:05,401 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:30:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 63 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 19:30:05,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:30:05,805 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:30:05,805 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-11-12 19:30:05,806 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [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], [1247], [1252], [1254], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:30:05,810 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:30:05,810 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:30:05,898 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:30:06,449 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:30:06,449 INFO L272 AbstractInterpreter]: Visited 90 different actions 256 times. Merged at 5 different actions 9 times. Never widened. Performed 4289 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4289 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 19:30:06,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:30:06,481 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:30:06,481 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:30:06,482 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 19:30:06,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:30:06,495 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:30:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:30:06,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:30:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:30:06,871 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:30:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 135 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:30:07,108 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:30:07,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-12 19:30:07,108 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:30:07,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 19:30:07,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 19:30:07,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:30:07,109 INFO L87 Difference]: Start difference. First operand 18274 states and 24888 transitions. Second operand 9 states. [2018-11-12 19:30:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:30:14,960 INFO L93 Difference]: Finished difference Result 40593 states and 56349 transitions. [2018-11-12 19:30:14,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-12 19:30:14,963 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2018-11-12 19:30:14,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:30:15,033 INFO L225 Difference]: With dead ends: 40593 [2018-11-12 19:30:15,034 INFO L226 Difference]: Without dead ends: 22325 [2018-11-12 19:30:15,095 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 390 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:30:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22325 states. [2018-11-12 19:30:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22325 to 22253. [2018-11-12 19:30:15,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22253 states. [2018-11-12 19:30:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22253 states to 22253 states and 27111 transitions. [2018-11-12 19:30:15,802 INFO L78 Accepts]: Start accepts. Automaton has 22253 states and 27111 transitions. Word has length 196 [2018-11-12 19:30:15,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:30:15,802 INFO L480 AbstractCegarLoop]: Abstraction has 22253 states and 27111 transitions. [2018-11-12 19:30:15,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 19:30:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 22253 states and 27111 transitions. [2018-11-12 19:30:15,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-12 19:30:15,814 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:30:15,814 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:30:15,815 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:30:15,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:30:15,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1973343696, now seen corresponding path program 1 times [2018-11-12 19:30:15,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:30:15,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:30:15,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:30:15,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:30:15,818 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:30:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:30:16,123 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:30:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 89 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 19:30:16,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:30:16,871 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:30:16,871 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-11-12 19:30:16,871 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [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], [1215], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:30:16,876 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:30:16,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:30:16,964 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:30:17,436 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:30:17,436 INFO L272 AbstractInterpreter]: Visited 96 different actions 275 times. Merged at 5 different actions 9 times. Never widened. Performed 4205 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4205 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 19:30:17,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:30:17,474 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:30:17,904 INFO L227 lantSequenceWeakener]: Weakened 196 states. On average, predicates are now at 75.39% of their original sizes. [2018-11-12 19:30:17,905 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:30:18,250 INFO L415 sIntCurrentIteration]: We unified 198 AI predicates to 198 [2018-11-12 19:30:18,251 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:30:18,252 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:30:18,252 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-12 19:30:18,252 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:30:18,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:30:18,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:30:18,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:30:18,253 INFO L87 Difference]: Start difference. First operand 22253 states and 27111 transitions. Second operand 11 states. [2018-11-12 19:31:03,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:31:03,262 INFO L93 Difference]: Finished difference Result 48885 states and 60093 transitions. [2018-11-12 19:31:03,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 19:31:03,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 199 [2018-11-12 19:31:03,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:31:03,338 INFO L225 Difference]: With dead ends: 48885 [2018-11-12 19:31:03,339 INFO L226 Difference]: Without dead ends: 26638 [2018-11-12 19:31:03,386 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 208 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:31:03,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26638 states. [2018-11-12 19:31:03,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26638 to 26620. [2018-11-12 19:31:03,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26620 states. [2018-11-12 19:31:03,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26620 states to 26620 states and 32076 transitions. [2018-11-12 19:31:03,866 INFO L78 Accepts]: Start accepts. Automaton has 26620 states and 32076 transitions. Word has length 199 [2018-11-12 19:31:03,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:31:03,866 INFO L480 AbstractCegarLoop]: Abstraction has 26620 states and 32076 transitions. [2018-11-12 19:31:03,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 19:31:03,866 INFO L276 IsEmpty]: Start isEmpty. Operand 26620 states and 32076 transitions. [2018-11-12 19:31:03,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-11-12 19:31:03,875 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:31:03,876 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 19:31:03,876 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:31:03,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:03,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1225790778, now seen corresponding path program 1 times [2018-11-12 19:31:03,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:31:03,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:03,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:03,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:03,878 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:31:03,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:04,183 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:31:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 192 proven. 115 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 19:31:04,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:04,329 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:31:04,330 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-11-12 19:31:04,330 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [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], [1215], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:31:04,333 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:31:04,334 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:31:04,376 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:31:05,392 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:31:05,392 INFO L272 AbstractInterpreter]: Visited 98 different actions 486 times. Merged at 8 different actions 41 times. Widened at 1 different actions 1 times. Performed 9363 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9363 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 19:31:05,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:05,428 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:31:05,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:05,429 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 19:31:05,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:05,448 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:31:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:05,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:31:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2018-11-12 19:31:05,769 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:31:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2018-11-12 19:31:05,983 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:31:05,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-12 19:31:05,984 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:31:05,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:31:05,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:31:05,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:31:05,985 INFO L87 Difference]: Start difference. First operand 26620 states and 32076 transitions. Second operand 3 states. [2018-11-12 19:31:09,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:31:09,895 INFO L93 Difference]: Finished difference Result 52800 states and 63701 transitions. [2018-11-12 19:31:09,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:31:09,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2018-11-12 19:31:09,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:31:09,960 INFO L225 Difference]: With dead ends: 52800 [2018-11-12 19:31:09,960 INFO L226 Difference]: Without dead ends: 26620 [2018-11-12 19:31:10,017 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 549 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:31:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26620 states. [2018-11-12 19:31:10,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26620 to 25316. [2018-11-12 19:31:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25316 states. [2018-11-12 19:31:10,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25316 states to 25316 states and 29623 transitions. [2018-11-12 19:31:10,410 INFO L78 Accepts]: Start accepts. Automaton has 25316 states and 29623 transitions. Word has length 274 [2018-11-12 19:31:10,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:31:10,411 INFO L480 AbstractCegarLoop]: Abstraction has 25316 states and 29623 transitions. [2018-11-12 19:31:10,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:31:10,411 INFO L276 IsEmpty]: Start isEmpty. Operand 25316 states and 29623 transitions. [2018-11-12 19:31:10,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2018-11-12 19:31:10,426 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:31:10,426 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-11-12 19:31:10,427 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:31:10,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:10,427 INFO L82 PathProgramCache]: Analyzing trace with hash -539103802, now seen corresponding path program 1 times [2018-11-12 19:31:10,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:31:10,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:10,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:10,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:10,428 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:31:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:10,793 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2018-11-12 19:31:10,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:10,794 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:31:10,794 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 374 with the following transitions: [2018-11-12 19:31:10,794 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [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], [1215], [1216], [1220], [1223], [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], [1333], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:31:10,798 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:31:10,798 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:31:10,856 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:31:11,570 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:31:11,570 INFO L272 AbstractInterpreter]: Visited 110 different actions 554 times. Merged at 9 different actions 49 times. Widened at 1 different actions 1 times. Performed 11743 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11743 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 12 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:31:11,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:11,575 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:31:11,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:11,575 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:31:11,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:11,584 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:31:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:11,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:31:11,936 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2018-11-12 19:31:11,937 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:31:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 581 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2018-11-12 19:31:12,175 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:31:12,175 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-11-12 19:31:12,175 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:31:12,176 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:31:12,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:31:12,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:31:12,176 INFO L87 Difference]: Start difference. First operand 25316 states and 29623 transitions. Second operand 6 states. [2018-11-12 19:31:21,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:31:21,842 INFO L93 Difference]: Finished difference Result 60852 states and 72861 transitions. [2018-11-12 19:31:21,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:31:21,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 373 [2018-11-12 19:31:21,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:31:21,929 INFO L225 Difference]: With dead ends: 60852 [2018-11-12 19:31:21,929 INFO L226 Difference]: Without dead ends: 35976 [2018-11-12 19:31:21,976 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 761 GetRequests, 748 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-12 19:31:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35976 states. [2018-11-12 19:31:22,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35976 to 35041. [2018-11-12 19:31:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35041 states. [2018-11-12 19:31:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35041 states to 35041 states and 40972 transitions. [2018-11-12 19:31:22,500 INFO L78 Accepts]: Start accepts. Automaton has 35041 states and 40972 transitions. Word has length 373 [2018-11-12 19:31:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:31:22,501 INFO L480 AbstractCegarLoop]: Abstraction has 35041 states and 40972 transitions. [2018-11-12 19:31:22,501 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:31:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 35041 states and 40972 transitions. [2018-11-12 19:31:22,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-11-12 19:31:22,524 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:31:22,524 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:22,525 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:31:22,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:22,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1174196408, now seen corresponding path program 1 times [2018-11-12 19:31:22,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:31:22,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:22,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:22,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:22,526 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:31:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:22,964 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 19:31:22,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:22,964 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:31:22,965 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 410 with the following transitions: [2018-11-12 19:31:22,965 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [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], [1333], [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], [1778], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:31:22,972 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:31:22,972 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:31:23,019 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:31:24,383 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:31:24,383 INFO L272 AbstractInterpreter]: Visited 194 different actions 960 times. Merged at 8 different actions 38 times. Never widened. Performed 17830 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17830 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 19:31:24,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:24,390 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:31:24,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:24,390 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 19:31:24,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:24,399 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:31:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:24,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:31:24,700 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 19:31:24,700 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:31:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 19:31:24,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:31:24,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-12 19:31:24,945 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:31:24,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:31:24,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:31:24,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:31:24,946 INFO L87 Difference]: Start difference. First operand 35041 states and 40972 transitions. Second operand 7 states. [2018-11-12 19:31:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:31:34,751 INFO L93 Difference]: Finished difference Result 92366 states and 109912 transitions. [2018-11-12 19:31:34,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 19:31:34,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 409 [2018-11-12 19:31:34,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:31:34,930 INFO L225 Difference]: With dead ends: 92366 [2018-11-12 19:31:34,931 INFO L226 Difference]: Without dead ends: 49730 [2018-11-12 19:31:35,035 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 820 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2018-11-12 19:31:35,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49730 states. [2018-11-12 19:31:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49730 to 47480. [2018-11-12 19:31:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47480 states. [2018-11-12 19:31:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47480 states to 47480 states and 54065 transitions. [2018-11-12 19:31:36,402 INFO L78 Accepts]: Start accepts. Automaton has 47480 states and 54065 transitions. Word has length 409 [2018-11-12 19:31:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:31:36,402 INFO L480 AbstractCegarLoop]: Abstraction has 47480 states and 54065 transitions. [2018-11-12 19:31:36,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:31:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 47480 states and 54065 transitions. [2018-11-12 19:31:36,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2018-11-12 19:31:36,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:31:36,426 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:31:36,426 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:31:36,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:36,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1556702633, now seen corresponding path program 1 times [2018-11-12 19:31:36,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:31:36,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:36,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:36,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:36,428 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:31:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:36,957 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-11-12 19:31:36,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:36,958 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:31:36,958 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 438 with the following transitions: [2018-11-12 19:31:36,958 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [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], [1274], [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], [1600], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:31:36,961 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:31:36,961 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:31:37,029 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:31:38,470 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:31:38,470 INFO L272 AbstractInterpreter]: Visited 161 different actions 963 times. Merged at 9 different actions 53 times. Widened at 1 different actions 1 times. Performed 21772 root evaluator evaluations with a maximum evaluation depth of 6. Performed 21772 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 12 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:31:38,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:38,510 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:31:38,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:38,510 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:31:38,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:38,522 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:31:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:38,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:31:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-11-12 19:31:38,808 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:31:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-11-12 19:31:39,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 19:31:39,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-12 19:31:39,274 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 19:31:39,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 19:31:39,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 19:31:39,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:31:39,275 INFO L87 Difference]: Start difference. First operand 47480 states and 54065 transitions. Second operand 8 states. [2018-11-12 19:31:46,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:31:46,627 INFO L93 Difference]: Finished difference Result 117051 states and 135329 transitions. [2018-11-12 19:31:46,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 19:31:46,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 437 [2018-11-12 19:31:46,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:31:46,819 INFO L225 Difference]: With dead ends: 117051 [2018-11-12 19:31:46,819 INFO L226 Difference]: Without dead ends: 70011 [2018-11-12 19:31:46,903 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 883 GetRequests, 871 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-12 19:31:46,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70011 states. [2018-11-12 19:31:47,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70011 to 68649. [2018-11-12 19:31:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68649 states. [2018-11-12 19:31:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68649 states to 68649 states and 78971 transitions. [2018-11-12 19:31:48,026 INFO L78 Accepts]: Start accepts. Automaton has 68649 states and 78971 transitions. Word has length 437 [2018-11-12 19:31:48,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:31:48,027 INFO L480 AbstractCegarLoop]: Abstraction has 68649 states and 78971 transitions. [2018-11-12 19:31:48,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 19:31:48,027 INFO L276 IsEmpty]: Start isEmpty. Operand 68649 states and 78971 transitions. [2018-11-12 19:31:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-11-12 19:31:48,057 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:31:48,058 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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 19:31:48,058 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:31:48,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:48,058 INFO L82 PathProgramCache]: Analyzing trace with hash 926459455, now seen corresponding path program 1 times [2018-11-12 19:31:48,059 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:31:48,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:48,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:48,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:48,060 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:31:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:49,042 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 410 proven. 2 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2018-11-12 19:31:49,042 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:49,042 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:31:49,043 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 473 with the following transitions: [2018-11-12 19:31:49,043 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [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], [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], [1420], [1425], [1427], [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], [1600], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:31:49,046 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:31:49,046 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:31:49,092 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:31:50,550 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:31:50,550 INFO L272 AbstractInterpreter]: Visited 162 different actions 962 times. Merged at 8 different actions 51 times. Widened at 1 different actions 1 times. Performed 21707 root evaluator evaluations with a maximum evaluation depth of 6. Performed 21707 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 11 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-12 19:31:50,568 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:50,568 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:31:50,568 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:50,568 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:31:50,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:50,578 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:31:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:50,719 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:31:50,855 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2018-11-12 19:31:50,855 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:31:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2018-11-12 19:31:51,001 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:31:51,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-12 19:31:51,002 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:31:51,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:31:51,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:31:51,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:31:51,003 INFO L87 Difference]: Start difference. First operand 68649 states and 78971 transitions. Second operand 3 states. [2018-11-12 19:31:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:31:54,818 INFO L93 Difference]: Finished difference Result 143524 states and 165285 transitions. [2018-11-12 19:31:54,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:31:54,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 472 [2018-11-12 19:31:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:31:54,976 INFO L225 Difference]: With dead ends: 143524 [2018-11-12 19:31:54,977 INFO L226 Difference]: Without dead ends: 66780 [2018-11-12 19:31:55,074 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:31:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66780 states. [2018-11-12 19:31:55,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66780 to 65475. [2018-11-12 19:31:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65475 states. [2018-11-12 19:31:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65475 states to 65475 states and 74121 transitions. [2018-11-12 19:31:56,043 INFO L78 Accepts]: Start accepts. Automaton has 65475 states and 74121 transitions. Word has length 472 [2018-11-12 19:31:56,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:31:56,044 INFO L480 AbstractCegarLoop]: Abstraction has 65475 states and 74121 transitions. [2018-11-12 19:31:56,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:31:56,044 INFO L276 IsEmpty]: Start isEmpty. Operand 65475 states and 74121 transitions. [2018-11-12 19:31:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-11-12 19:31:56,071 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:31:56,071 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:31:56,072 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:31:56,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:56,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1301058081, now seen corresponding path program 1 times [2018-11-12 19:31:56,072 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:31:56,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:56,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:56,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:31:56,074 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:31:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:56,486 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2018-11-12 19:31:56,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:56,487 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:31:56,487 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 478 with the following transitions: [2018-11-12 19:31:56,487 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [914], [916], [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], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1380], [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], [1681], [1684], [1688], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-12 19:31:56,490 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:31:56,491 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:31:56,536 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:31:57,876 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 19:31:57,876 INFO L272 AbstractInterpreter]: Visited 177 different actions 872 times. Merged at 7 different actions 34 times. Never widened. Performed 17942 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17942 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 19:31:57,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:31:57,886 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 19:31:57,886 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:31:57,886 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:31:57,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:31:57,895 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:31:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:31:58,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:31:58,467 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 368 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-11-12 19:31:58,467 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 19:31:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2018-11-12 19:31:58,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 19:31:58,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 3 [2018-11-12 19:31:58,784 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:31:58,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:31:58,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:31:58,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:31:58,785 INFO L87 Difference]: Start difference. First operand 65475 states and 74121 transitions. Second operand 3 states. [2018-11-12 19:32:03,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:32:03,985 INFO L93 Difference]: Finished difference Result 145801 states and 165676 transitions. [2018-11-12 19:32:03,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:32:03,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 477 [2018-11-12 19:32:03,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:32:04,179 INFO L225 Difference]: With dead ends: 145801 [2018-11-12 19:32:04,180 INFO L226 Difference]: Without dead ends: 80766 [2018-11-12 19:32:04,291 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 956 GetRequests, 955 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 19:32:04,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80766 states. [2018-11-12 19:32:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80766 to 79023. [2018-11-12 19:32:05,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79023 states. [2018-11-12 19:32:05,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79023 states to 79023 states and 88675 transitions. [2018-11-12 19:32:05,328 INFO L78 Accepts]: Start accepts. Automaton has 79023 states and 88675 transitions. Word has length 477 [2018-11-12 19:32:05,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:32:05,329 INFO L480 AbstractCegarLoop]: Abstraction has 79023 states and 88675 transitions. [2018-11-12 19:32:05,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:32:05,329 INFO L276 IsEmpty]: Start isEmpty. Operand 79023 states and 88675 transitions. [2018-11-12 19:32:05,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-11-12 19:32:05,352 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:32:05,352 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:32:05,352 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:32:05,352 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:32:05,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1773268561, now seen corresponding path program 1 times [2018-11-12 19:32:05,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:32:05,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:32:05,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:32:05,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:32:05,354 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:32:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:32:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 624 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2018-11-12 19:32:05,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:32:05,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:32:05,768 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:32:05,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:32:05,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:32:05,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:32:05,770 INFO L87 Difference]: Start difference. First operand 79023 states and 88675 transitions. Second operand 3 states. Received shutdown request... [2018-11-12 19:32:12,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:32:12,398 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:32:12,403 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:32:12,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:32:12 BoogieIcfgContainer [2018-11-12 19:32:12,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:32:12,404 INFO L168 Benchmark]: Toolchain (without parser) took 217706.54 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 531.1 MB. Max. memory is 7.1 GB. [2018-11-12 19:32:12,405 INFO L168 Benchmark]: CDTParser took 0.54 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 19:32:12,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1662.98 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 19:32:12,407 INFO L168 Benchmark]: Boogie Procedure Inliner took 264.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -930.9 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:32:12,408 INFO L168 Benchmark]: Boogie Preprocessor took 253.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:32:12,409 INFO L168 Benchmark]: RCFGBuilder took 7623.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 446.5 MB). Peak memory consumption was 446.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:32:12,409 INFO L168 Benchmark]: TraceAbstraction took 207897.04 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 3.9 GB in the end (delta: -2.2 GB). Peak memory consumption was 115.5 MB. Max. memory is 7.1 GB. [2018-11-12 19:32:12,414 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 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 1662.98 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 264.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -930.9 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 253.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7623.25 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 446.5 MB). Peak memory consumption was 446.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207897.04 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 3.9 GB in the end (delta: -2.2 GB). Peak memory consumption was 115.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 101). Cancelled while BasicCegarLoop was constructing difference of abstraction (79023states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (84578 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 207.8s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 148.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5433 SDtfs, 24631 SDslu, 3202 SDs, 0 SdLazy, 37755 SolverSat, 9526 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 98.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 5824 GetRequests, 5699 SyntacticMatches, 17 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 32.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79023occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.4s AbstIntTime, 9 AbstIntIterations, 1 AbstIntStrong, 0.9966200875687042 AbsIntWeakeningRatio, 0.13636363636363635 AbsIntAvgWeakeningVarsNumRemoved, 23.555555555555557 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 9166 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 37.2s InterpolantComputationTime, 6523 NumberOfCodeBlocks, 6523 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 9245 ConstructedInterpolants, 112 QuantifiedInterpolants, 7171448 SizeOfPredicates, 10 NumberOfNonLiveVariables, 4655 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 29 InterpolantComputations, 10 PerfectInterpolantSequences, 10528/10775 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown