java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 12:25:14,573 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 12:25:14,577 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 12:25:14,592 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 12:25:14,593 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 12:25:14,594 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 12:25:14,596 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 12:25:14,598 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 12:25:14,601 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 12:25:14,602 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 12:25:14,603 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 12:25:14,604 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 12:25:14,605 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 12:25:14,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 12:25:14,614 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 12:25:14,616 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 12:25:14,617 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 12:25:14,620 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 12:25:14,624 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 12:25:14,628 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 12:25:14,629 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 12:25:14,630 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 12:25:14,632 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 12:25:14,633 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 12:25:14,633 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 12:25:14,634 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 12:25:14,635 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 12:25:14,639 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 12:25:14,640 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 12:25:14,640 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 12:25:14,641 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 12:25:14,641 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 12:25:14,643 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 12:25:14,644 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 12:25:14,645 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 12:25:14,645 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 12:25:14,646 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 12:25:14,671 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 12:25:14,671 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 12:25:14,672 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 12:25:14,673 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 12:25:14,673 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 12:25:14,673 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 12:25:14,673 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 12:25:14,673 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 12:25:14,674 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 12:25:14,674 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 12:25:14,674 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 12:25:14,674 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 12:25:14,675 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 12:25:14,675 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 12:25:14,675 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 12:25:14,675 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 12:25:14,676 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 12:25:14,676 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 12:25:14,676 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 12:25:14,676 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 12:25:14,676 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 12:25:14,677 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 12:25:14,677 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 12:25:14,677 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 12:25:14,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:25:14,677 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 12:25:14,678 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 12:25:14,678 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 12:25:14,678 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 12:25:14,678 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 12:25:14,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 12:25:14,678 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 12:25:14,679 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 12:25:14,679 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 12:25:14,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 12:25:14,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 12:25:14,744 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 12:25:14,745 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 12:25:14,746 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 12:25:14,747 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label02_true-unreach-call.c [2018-10-27 12:25:14,825 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cd12ea047/852d52e5e3c841459aa9341bb1d83eaf/FLAG06c260ad4 [2018-10-27 12:25:15,423 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 12:25:15,424 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label02_true-unreach-call.c [2018-10-27 12:25:15,443 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cd12ea047/852d52e5e3c841459aa9341bb1d83eaf/FLAG06c260ad4 [2018-10-27 12:25:15,462 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cd12ea047/852d52e5e3c841459aa9341bb1d83eaf [2018-10-27 12:25:15,473 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 12:25:15,476 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 12:25:15,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 12:25:15,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 12:25:15,482 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 12:25:15,483 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:25:15" (1/1) ... [2018-10-27 12:25:15,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749149db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:15, skipping insertion in model container [2018-10-27 12:25:15,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:25:15" (1/1) ... [2018-10-27 12:25:15,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 12:25:15,581 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 12:25:16,367 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:25:16,375 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 12:25:16,741 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:25:16,766 INFO L193 MainTranslator]: Completed translation [2018-10-27 12:25:16,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16 WrapperNode [2018-10-27 12:25:16,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 12:25:16,768 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 12:25:16,768 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 12:25:16,769 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 12:25:16,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (1/1) ... [2018-10-27 12:25:16,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (1/1) ... [2018-10-27 12:25:17,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 12:25:17,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 12:25:17,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 12:25:17,089 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 12:25:17,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (1/1) ... [2018-10-27 12:25:17,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (1/1) ... [2018-10-27 12:25:17,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (1/1) ... [2018-10-27 12:25:17,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (1/1) ... [2018-10-27 12:25:17,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (1/1) ... [2018-10-27 12:25:17,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (1/1) ... [2018-10-27 12:25:17,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (1/1) ... [2018-10-27 12:25:17,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 12:25:17,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 12:25:17,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 12:25:17,213 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 12:25:17,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:25:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 12:25:17,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 12:25:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 12:25:17,277 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 12:25:17,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 12:25:17,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 12:25:17,278 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 12:25:17,278 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 12:25:21,920 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 12:25:21,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:25:21 BoogieIcfgContainer [2018-10-27 12:25:21,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 12:25:21,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 12:25:21,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 12:25:21,927 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 12:25:21,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:25:15" (1/3) ... [2018-10-27 12:25:21,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2433cfba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:25:21, skipping insertion in model container [2018-10-27 12:25:21,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:25:16" (2/3) ... [2018-10-27 12:25:21,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2433cfba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:25:21, skipping insertion in model container [2018-10-27 12:25:21,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:25:21" (3/3) ... [2018-10-27 12:25:21,932 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label02_true-unreach-call.c [2018-10-27 12:25:21,943 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 12:25:21,954 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 12:25:21,975 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 12:25:22,015 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 12:25:22,016 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 12:25:22,016 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 12:25:22,016 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 12:25:22,016 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 12:25:22,016 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 12:25:22,016 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 12:25:22,017 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 12:25:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 12:25:22,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-27 12:25:22,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:25:22,080 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:25:22,083 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:25:22,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:25:22,092 INFO L82 PathProgramCache]: Analyzing trace with hash -598377940, now seen corresponding path program 1 times [2018-10-27 12:25:22,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:25:22,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:22,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:25:22,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:22,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:25:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:25:23,129 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:25:23,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:25:23,342 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:25:23,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:25:23,343 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:25:23,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:25:23,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:25:23,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:25:23,369 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-27 12:25:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:25:25,336 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-10-27 12:25:25,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:25:25,338 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2018-10-27 12:25:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:25:25,370 INFO L225 Difference]: With dead ends: 838 [2018-10-27 12:25:25,370 INFO L226 Difference]: Without dead ends: 524 [2018-10-27 12:25:25,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:25:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-10-27 12:25:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-10-27 12:25:25,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-27 12:25:25,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-10-27 12:25:25,478 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 211 [2018-10-27 12:25:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:25:25,479 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-10-27 12:25:25,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:25:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-10-27 12:25:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-27 12:25:25,488 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:25:25,488 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:25:25,489 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:25:25,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:25:25,489 INFO L82 PathProgramCache]: Analyzing trace with hash 500762469, now seen corresponding path program 1 times [2018-10-27 12:25:25,490 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:25:25,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:25,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:25:25,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:25,491 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:25:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:25:25,839 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 12:25:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:25:26,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:25:26,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 12:25:26,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:25:26,045 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:25:26,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:25:26,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 12:25:26,050 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-10-27 12:25:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:25:29,848 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-10-27 12:25:29,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:25:29,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 221 [2018-10-27 12:25:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:25:29,872 INFO L225 Difference]: With dead ends: 1581 [2018-10-27 12:25:29,872 INFO L226 Difference]: Without dead ends: 1065 [2018-10-27 12:25:29,877 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 12:25:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-10-27 12:25:29,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-10-27 12:25:29,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-27 12:25:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-10-27 12:25:29,951 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 221 [2018-10-27 12:25:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:25:29,952 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-10-27 12:25:29,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 12:25:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-10-27 12:25:29,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-27 12:25:29,959 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:25:29,963 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:25:29,963 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:25:29,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:25:29,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1880963624, now seen corresponding path program 1 times [2018-10-27 12:25:29,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:25:29,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:29,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:25:29,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:29,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:25:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:25:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:25:30,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:25:30,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:25:30,336 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:25:30,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:25:30,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:25:30,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:25:30,337 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-10-27 12:25:33,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:25:33,332 INFO L93 Difference]: Finished difference Result 2901 states and 5098 transitions. [2018-10-27 12:25:33,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:25:33,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2018-10-27 12:25:33,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:25:33,351 INFO L225 Difference]: With dead ends: 2901 [2018-10-27 12:25:33,352 INFO L226 Difference]: Without dead ends: 1884 [2018-10-27 12:25:33,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:25:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2018-10-27 12:25:33,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1864. [2018-10-27 12:25:33,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1864 states. [2018-10-27 12:25:33,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 3159 transitions. [2018-10-27 12:25:33,423 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 3159 transitions. Word has length 224 [2018-10-27 12:25:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:25:33,423 INFO L481 AbstractCegarLoop]: Abstraction has 1864 states and 3159 transitions. [2018-10-27 12:25:33,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:25:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 3159 transitions. [2018-10-27 12:25:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-10-27 12:25:33,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:25:33,433 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:25:33,433 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:25:33,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:25:33,434 INFO L82 PathProgramCache]: Analyzing trace with hash 651322454, now seen corresponding path program 1 times [2018-10-27 12:25:33,434 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:25:33,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:33,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:25:33,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:25:33,435 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:25:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:25:33,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 12:25:33,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:25:33,652 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:25:33,653 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-10-27 12:25:33,656 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1145], [1149], [1151], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:25:33,725 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:25:33,725 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:25:35,352 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:25:35,354 INFO L272 AbstractInterpreter]: Visited 212 different actions 212 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 12:25:35,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:25:35,398 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:25:36,522 INFO L227 lantSequenceWeakener]: Weakened 221 states. On average, predicates are now at 75.47% of their original sizes. [2018-10-27 12:25:36,522 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:25:37,660 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-10-27 12:25:37,661 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:25:37,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:25:37,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [5] total 28 [2018-10-27 12:25:37,662 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:25:37,663 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-27 12:25:37,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-27 12:25:37,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2018-10-27 12:25:37,664 INFO L87 Difference]: Start difference. First operand 1864 states and 3159 transitions. Second operand 25 states. [2018-10-27 12:26:08,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:26:08,498 INFO L93 Difference]: Finished difference Result 3932 states and 6645 transitions. [2018-10-27 12:26:08,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:26:08,498 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 232 [2018-10-27 12:26:08,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:26:08,509 INFO L225 Difference]: With dead ends: 3932 [2018-10-27 12:26:08,510 INFO L226 Difference]: Without dead ends: 2074 [2018-10-27 12:26:08,516 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 234 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2018-10-27 12:26:08,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2074 states. [2018-10-27 12:26:08,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2074 to 2072. [2018-10-27 12:26:08,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2072 states. [2018-10-27 12:26:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2072 states to 2072 states and 3376 transitions. [2018-10-27 12:26:08,572 INFO L78 Accepts]: Start accepts. Automaton has 2072 states and 3376 transitions. Word has length 232 [2018-10-27 12:26:08,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:26:08,572 INFO L481 AbstractCegarLoop]: Abstraction has 2072 states and 3376 transitions. [2018-10-27 12:26:08,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-27 12:26:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2072 states and 3376 transitions. [2018-10-27 12:26:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-27 12:26:08,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:26:08,581 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:26:08,582 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:26:08,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:08,582 INFO L82 PathProgramCache]: Analyzing trace with hash 460537689, now seen corresponding path program 1 times [2018-10-27 12:26:08,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:26:08,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:08,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:26:08,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:08,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:26:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:26:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 12:26:08,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:26:08,926 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:26:08,926 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-10-27 12:26:08,927 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1145], [1149], [1151], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:26:08,938 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:26:08,938 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:26:10,886 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:26:10,886 INFO L272 AbstractInterpreter]: Visited 216 different actions 428 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:26:10,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:10,898 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:26:12,137 INFO L227 lantSequenceWeakener]: Weakened 120 states. On average, predicates are now at 80.42% of their original sizes. [2018-10-27 12:26:12,138 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:26:18,266 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-10-27 12:26:18,267 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:26:18,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:26:18,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [33] imperfect sequences [5] total 36 [2018-10-27 12:26:18,267 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:26:18,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-10-27 12:26:18,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-10-27 12:26:18,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=846, Unknown=0, NotChecked=0, Total=1056 [2018-10-27 12:26:18,269 INFO L87 Difference]: Start difference. First operand 2072 states and 3376 transitions. Second operand 33 states. [2018-10-27 12:26:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:26:43,269 INFO L93 Difference]: Finished difference Result 4144 states and 6896 transitions. [2018-10-27 12:26:43,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 12:26:43,269 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 244 [2018-10-27 12:26:43,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:26:43,281 INFO L225 Difference]: With dead ends: 4144 [2018-10-27 12:26:43,281 INFO L226 Difference]: Without dead ends: 2286 [2018-10-27 12:26:43,287 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 251 GetRequests, 163 SyntacticMatches, 49 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1547 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=309, Invalid=1331, Unknown=0, NotChecked=0, Total=1640 [2018-10-27 12:26:43,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2018-10-27 12:26:43,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 2283. [2018-10-27 12:26:43,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2283 states. [2018-10-27 12:26:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2283 states to 2283 states and 3604 transitions. [2018-10-27 12:26:43,345 INFO L78 Accepts]: Start accepts. Automaton has 2283 states and 3604 transitions. Word has length 244 [2018-10-27 12:26:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:26:43,345 INFO L481 AbstractCegarLoop]: Abstraction has 2283 states and 3604 transitions. [2018-10-27 12:26:43,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-10-27 12:26:43,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2283 states and 3604 transitions. [2018-10-27 12:26:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-27 12:26:43,354 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:26:43,354 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:26:43,355 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:26:43,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:43,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1307188554, now seen corresponding path program 1 times [2018-10-27 12:26:43,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:26:43,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:43,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:26:43,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:26:43,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:26:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:26:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:26:43,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:26:43,848 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:26:43,849 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-10-27 12:26:43,854 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1145], [1149], [1151], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:26:43,870 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:26:43,871 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:26:45,515 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:26:45,515 INFO L272 AbstractInterpreter]: Visited 215 different actions 426 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:26:45,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:26:45,524 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:26:46,253 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 74.95% of their original sizes. [2018-10-27 12:26:46,253 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:26:46,721 INFO L415 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2018-10-27 12:26:46,721 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:26:46,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:26:46,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-10-27 12:26:46,722 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:26:46,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-27 12:26:46,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-27 12:26:46,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2018-10-27 12:26:46,723 INFO L87 Difference]: Start difference. First operand 2283 states and 3604 transitions. Second operand 24 states. [2018-10-27 12:27:49,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:27:49,958 INFO L93 Difference]: Finished difference Result 5459 states and 9057 transitions. [2018-10-27 12:27:49,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 12:27:49,958 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 243 [2018-10-27 12:27:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:27:49,976 INFO L225 Difference]: With dead ends: 5459 [2018-10-27 12:27:49,976 INFO L226 Difference]: Without dead ends: 3601 [2018-10-27 12:27:49,983 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 251 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=211, Invalid=845, Unknown=0, NotChecked=0, Total=1056 [2018-10-27 12:27:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2018-10-27 12:27:50,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3596. [2018-10-27 12:27:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3596 states. [2018-10-27 12:27:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5189 transitions. [2018-10-27 12:27:50,072 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5189 transitions. Word has length 243 [2018-10-27 12:27:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:27:50,073 INFO L481 AbstractCegarLoop]: Abstraction has 3596 states and 5189 transitions. [2018-10-27 12:27:50,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-27 12:27:50,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5189 transitions. [2018-10-27 12:27:50,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-27 12:27:50,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:27:50,086 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:27:50,086 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:27:50,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:27:50,086 INFO L82 PathProgramCache]: Analyzing trace with hash -300656109, now seen corresponding path program 1 times [2018-10-27 12:27:50,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:27:50,087 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:27:50,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:27:50,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:27:50,088 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:27:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:27:50,367 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:27:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 41 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 12:27:51,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:27:51,212 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:27:51,212 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 256 with the following transitions: [2018-10-27 12:27:51,213 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1145], [1149], [1151], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:27:51,220 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:27:51,220 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:27:53,844 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:27:53,844 INFO L272 AbstractInterpreter]: Visited 217 different actions 647 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 12:27:53,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:27:53,852 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:27:53,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:27:53,852 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:27:53,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:27:53,863 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:27:54,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:27:54,092 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:27:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 12:27:54,331 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:27:55,109 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-10-27 12:27:55,141 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:27:55,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-10-27 12:27:55,141 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:27:55,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-27 12:27:55,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-27 12:27:55,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-10-27 12:27:55,143 INFO L87 Difference]: Start difference. First operand 3596 states and 5189 transitions. Second operand 12 states. [2018-10-27 12:28:01,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:01,961 INFO L93 Difference]: Finished difference Result 10397 states and 16801 transitions. [2018-10-27 12:28:01,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-27 12:28:01,973 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 255 [2018-10-27 12:28:01,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:02,009 INFO L225 Difference]: With dead ends: 10397 [2018-10-27 12:28:02,010 INFO L226 Difference]: Without dead ends: 6807 [2018-10-27 12:28:02,030 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 532 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-10-27 12:28:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6807 states. [2018-10-27 12:28:02,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6807 to 6801. [2018-10-27 12:28:02,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6801 states. [2018-10-27 12:28:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6801 states to 6801 states and 9740 transitions. [2018-10-27 12:28:02,237 INFO L78 Accepts]: Start accepts. Automaton has 6801 states and 9740 transitions. Word has length 255 [2018-10-27 12:28:02,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:02,237 INFO L481 AbstractCegarLoop]: Abstraction has 6801 states and 9740 transitions. [2018-10-27 12:28:02,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-27 12:28:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 6801 states and 9740 transitions. [2018-10-27 12:28:02,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-27 12:28:02,259 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:02,259 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:28:02,260 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:02,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:02,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1956908726, now seen corresponding path program 1 times [2018-10-27 12:28:02,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:02,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:02,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:02,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:02,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:02,900 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-27 12:28:03,159 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-27 12:28:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-27 12:28:03,719 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:28:03,719 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 12:28:03,719 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:28:03,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 12:28:03,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 12:28:03,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-27 12:28:03,721 INFO L87 Difference]: Start difference. First operand 6801 states and 9740 transitions. Second operand 6 states. [2018-10-27 12:28:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:28:05,893 INFO L93 Difference]: Finished difference Result 15535 states and 22228 transitions. [2018-10-27 12:28:05,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 12:28:05,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 259 [2018-10-27 12:28:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:28:05,953 INFO L225 Difference]: With dead ends: 15535 [2018-10-27 12:28:05,953 INFO L226 Difference]: Without dead ends: 9099 [2018-10-27 12:28:05,985 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-27 12:28:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9099 states. [2018-10-27 12:28:06,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9099 to 8633. [2018-10-27 12:28:06,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8633 states. [2018-10-27 12:28:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8633 states to 8633 states and 11725 transitions. [2018-10-27 12:28:06,244 INFO L78 Accepts]: Start accepts. Automaton has 8633 states and 11725 transitions. Word has length 259 [2018-10-27 12:28:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:28:06,244 INFO L481 AbstractCegarLoop]: Abstraction has 8633 states and 11725 transitions. [2018-10-27 12:28:06,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 12:28:06,245 INFO L276 IsEmpty]: Start isEmpty. Operand 8633 states and 11725 transitions. [2018-10-27 12:28:06,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-10-27 12:28:06,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:28:06,293 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 12:28:06,293 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:28:06,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash 154595166, now seen corresponding path program 1 times [2018-10-27 12:28:06,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:28:06,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:06,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:28:06,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:28:06,295 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:28:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:28:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 182 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 12:28:07,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:28:07,517 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:28:07,517 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 360 with the following transitions: [2018-10-27 12:28:07,518 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [99], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1097], [1105], [1113], [1121], [1129], [1137], [1145], [1149], [1151], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:28:07,527 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:28:07,527 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:28:10,286 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:28:10,287 INFO L272 AbstractInterpreter]: Visited 216 different actions 647 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-10-27 12:28:10,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:28:10,297 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:28:11,731 INFO L227 lantSequenceWeakener]: Weakened 356 states. On average, predicates are now at 73.25% of their original sizes. [2018-10-27 12:28:11,731 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:28:12,149 INFO L415 sIntCurrentIteration]: We unified 358 AI predicates to 358 [2018-10-27 12:28:12,150 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:28:12,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:28:12,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-27 12:28:12,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:28:12,151 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-27 12:28:12,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-27 12:28:12,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-10-27 12:28:12,151 INFO L87 Difference]: Start difference. First operand 8633 states and 11725 transitions. Second operand 22 states. Received shutdown request... [2018-10-27 12:29:11,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-27 12:29:11,549 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 12:29:11,555 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 12:29:11,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:29:11 BoogieIcfgContainer [2018-10-27 12:29:11,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 12:29:11,556 INFO L168 Benchmark]: Toolchain (without parser) took 236082.48 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 593.6 MB in the end (delta: 826.6 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-10-27 12:29:11,558 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 12:29:11,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1290.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:11,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 320.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -862.6 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:11,560 INFO L168 Benchmark]: Boogie Preprocessor took 123.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:11,560 INFO L168 Benchmark]: RCFGBuilder took 4709.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 266.3 MB). Peak memory consumption was 266.3 MB. Max. memory is 7.1 GB. [2018-10-27 12:29:11,561 INFO L168 Benchmark]: TraceAbstraction took 229632.80 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 593.6 MB in the end (delta: 1.3 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-10-27 12:29:11,566 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1290.60 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 320.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -862.6 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.44 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4709.04 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 266.3 MB). Peak memory consumption was 266.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229632.80 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 593.6 MB in the end (delta: 1.3 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1647]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1647). Cancelled while BasicCegarLoop was constructing difference of abstraction (8633states) and FLOYD_HOARE automaton (currently 18 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (11509 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 229.5s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 196.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1878 SDtfs, 13001 SDslu, 4242 SDs, 0 SdLazy, 21355 SolverSat, 3454 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 105.2s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1703 GetRequests, 1470 SyntacticMatches, 57 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2512 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8633occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.8s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9990780131991599 AbsIntWeakeningRatio, 0.2541899441340782 AbsIntAvgWeakeningVarsNumRemoved, 56.64711359404097 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 546 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 2503 NumberOfCodeBlocks, 2503 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2747 ConstructedInterpolants, 0 QuantifiedInterpolants, 2112656 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1234 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 523/584 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown