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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:05:43,680 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:05:43,683 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:05:43,699 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:05:43,699 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:05:43,701 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:05:43,702 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:05:43,704 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:05:43,707 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:05:43,708 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:05:43,708 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:05:43,709 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:05:43,710 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:05:43,711 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:05:43,720 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:05:43,721 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:05:43,722 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:05:43,725 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:05:43,729 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:05:43,731 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:05:43,732 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:05:43,733 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:05:43,735 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:05:43,736 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:05:43,736 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:05:43,739 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:05:43,740 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:05:43,740 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:05:43,741 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:05:43,743 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:05:43,744 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:05:43,744 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:05:43,744 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:05:43,745 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:05:43,746 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:05:43,747 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:05:43,747 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:05:43,774 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:05:43,775 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:05:43,775 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:05:43,776 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:05:43,776 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:05:43,777 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:05:43,777 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:05:43,777 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:05:43,777 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:05:43,777 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:05:43,777 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:05:43,778 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:05:43,778 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:05:43,778 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:05:43,778 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:05:43,779 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:05:43,780 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:05:43,780 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:05:43,780 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:05:43,780 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:05:43,780 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:05:43,780 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:05:43,782 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:05:43,782 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:05:43,782 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:05:43,782 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:05:43,782 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:05:43,783 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:05:43,783 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:05:43,783 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:05:43,783 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:05:43,783 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:05:43,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:05:43,784 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:05:43,784 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:05:43,784 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:05:43,852 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:05:43,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:05:43,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:05:43,871 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:05:43,872 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:05:43,873 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-11-07 09:05:43,955 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba27fc823/13fd523712114f2f837aaf82e3e6d76d/FLAG2bbeb6db3 [2018-11-07 09:05:44,669 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:05:44,670 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label12_true-unreach-call.c [2018-11-07 09:05:44,694 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba27fc823/13fd523712114f2f837aaf82e3e6d76d/FLAG2bbeb6db3 [2018-11-07 09:05:44,709 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba27fc823/13fd523712114f2f837aaf82e3e6d76d [2018-11-07 09:05:44,720 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:05:44,721 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:05:44,722 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:05:44,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:05:44,727 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:05:44,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:05:44" (1/1) ... [2018-11-07 09:05:44,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@febd950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:44, skipping insertion in model container [2018-11-07 09:05:44,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:05:44" (1/1) ... [2018-11-07 09:05:44,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:05:44,837 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:05:45,609 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:05:45,614 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:05:45,898 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:05:45,919 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:05:45,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45 WrapperNode [2018-11-07 09:05:45,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:05:45,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:05:45,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:05:45,921 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:05:45,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (1/1) ... [2018-11-07 09:05:46,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (1/1) ... [2018-11-07 09:05:46,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:05:46,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:05:46,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:05:46,142 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:05:46,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (1/1) ... [2018-11-07 09:05:46,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (1/1) ... [2018-11-07 09:05:46,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (1/1) ... [2018-11-07 09:05:46,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (1/1) ... [2018-11-07 09:05:46,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (1/1) ... [2018-11-07 09:05:46,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (1/1) ... [2018-11-07 09:05:46,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (1/1) ... [2018-11-07 09:05:46,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:05:46,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:05:46,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:05:46,320 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:05:46,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (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 [2018-11-07 09:05:46,391 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:05:46,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:05:46,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:05:46,392 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:05:46,392 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:05:46,392 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:05:46,392 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:05:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:05:46,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:05:46,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:05:46,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:05:53,040 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:05:53,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:05:53 BoogieIcfgContainer [2018-11-07 09:05:53,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:05:53,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:05:53,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:05:53,046 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:05:53,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:05:44" (1/3) ... [2018-11-07 09:05:53,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed07cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:05:53, skipping insertion in model container [2018-11-07 09:05:53,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:05:45" (2/3) ... [2018-11-07 09:05:53,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ed07cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:05:53, skipping insertion in model container [2018-11-07 09:05:53,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:05:53" (3/3) ... [2018-11-07 09:05:53,050 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label12_true-unreach-call.c [2018-11-07 09:05:53,061 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:05:53,071 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:05:53,089 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:05:53,132 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:05:53,132 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:05:53,133 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:05:53,133 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:05:53,133 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:05:53,133 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:05:53,133 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:05:53,133 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:05:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 09:05:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-07 09:05:53,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:53,180 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] [2018-11-07 09:05:53,182 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:53,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:53,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1945844012, now seen corresponding path program 1 times [2018-11-07 09:05:53,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:53,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:53,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:53,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:53,240 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:53,726 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:05:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:05:53,881 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:05:53,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:05:53,882 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:05:53,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:05:53,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:05:53,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:05:53,912 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 09:05:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:57,688 INFO L93 Difference]: Finished difference Result 1192 states and 2147 transitions. [2018-11-07 09:05:57,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:05:57,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-11-07 09:05:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:57,721 INFO L225 Difference]: With dead ends: 1192 [2018-11-07 09:05:57,722 INFO L226 Difference]: Without dead ends: 752 [2018-11-07 09:05:57,730 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:05:57,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2018-11-07 09:05:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2018-11-07 09:05:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-11-07 09:05:57,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1322 transitions. [2018-11-07 09:05:57,847 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1322 transitions. Word has length 66 [2018-11-07 09:05:57,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:57,848 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 1322 transitions. [2018-11-07 09:05:57,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:05:57,848 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1322 transitions. [2018-11-07 09:05:57,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 09:05:57,858 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:57,858 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:05:57,859 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:57,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:57,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1570917914, now seen corresponding path program 1 times [2018-11-07 09:05:57,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:57,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:57,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:57,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:57,925 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:05:58,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:58,454 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:58,456 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-11-07 09:05:58,458 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:05:58,511 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:58,511 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:58,964 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:05:58,966 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:05:59,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:59,000 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:05:59,424 INFO L227 lantSequenceWeakener]: Weakened 141 states. On average, predicates are now at 78.81% of their original sizes. [2018-11-07 09:05:59,425 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:05:59,528 INFO L415 sIntCurrentIteration]: We unified 146 AI predicates to 146 [2018-11-07 09:05:59,528 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:05:59,529 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:05:59,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 09:05:59,530 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:05:59,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:05:59,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:05:59,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:05:59,533 INFO L87 Difference]: Start difference. First operand 752 states and 1322 transitions. Second operand 6 states. [2018-11-07 09:07:12,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:12,562 INFO L93 Difference]: Finished difference Result 1808 states and 3199 transitions. [2018-11-07 09:07:12,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:07:12,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-11-07 09:07:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:12,570 INFO L225 Difference]: With dead ends: 1808 [2018-11-07 09:07:12,570 INFO L226 Difference]: Without dead ends: 1062 [2018-11-07 09:07:12,575 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 147 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:07:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2018-11-07 09:07:12,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1060. [2018-11-07 09:07:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2018-11-07 09:07:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1637 transitions. [2018-11-07 09:07:12,613 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1637 transitions. Word has length 147 [2018-11-07 09:07:12,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:12,614 INFO L480 AbstractCegarLoop]: Abstraction has 1060 states and 1637 transitions. [2018-11-07 09:07:12,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:07:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1637 transitions. [2018-11-07 09:07:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-07 09:07:12,620 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:12,620 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 09:07:12,621 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:12,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:12,621 INFO L82 PathProgramCache]: Analyzing trace with hash -461112399, now seen corresponding path program 1 times [2018-11-07 09:07:12,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:12,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:12,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:12,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:12,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:13,194 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:07:14,139 WARN L179 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2018-11-07 09:07:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 56 proven. 136 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 09:07:14,583 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:14,583 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:14,584 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-11-07 09:07:14,584 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:14,589 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:14,589 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:14,747 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:07:14,747 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:07:14,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:14,768 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:07:14,985 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 84.36% of their original sizes. [2018-11-07 09:07:14,986 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:07:15,126 INFO L415 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2018-11-07 09:07:15,126 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:07:15,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:07:15,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2018-11-07 09:07:15,127 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:07:15,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:07:15,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:07:15,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:07:15,128 INFO L87 Difference]: Start difference. First operand 1060 states and 1637 transitions. Second operand 9 states. [2018-11-07 09:07:39,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:07:39,817 INFO L93 Difference]: Finished difference Result 2132 states and 3531 transitions. [2018-11-07 09:07:39,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:07:39,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 243 [2018-11-07 09:07:39,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:07:39,825 INFO L225 Difference]: With dead ends: 2132 [2018-11-07 09:07:39,825 INFO L226 Difference]: Without dead ends: 1386 [2018-11-07 09:07:39,829 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 248 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:07:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2018-11-07 09:07:39,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1383. [2018-11-07 09:07:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1383 states. [2018-11-07 09:07:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1987 transitions. [2018-11-07 09:07:39,865 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1987 transitions. Word has length 243 [2018-11-07 09:07:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:07:39,866 INFO L480 AbstractCegarLoop]: Abstraction has 1383 states and 1987 transitions. [2018-11-07 09:07:39,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:07:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1987 transitions. [2018-11-07 09:07:39,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2018-11-07 09:07:39,876 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:07:39,877 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:07:39,877 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:07:39,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:39,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1096078124, now seen corresponding path program 1 times [2018-11-07 09:07:39,878 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:07:39,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:39,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:39,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:07:39,879 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:07:39,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 9 proven. 112 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 09:07:40,373 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:40,373 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:07:40,374 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 423 with the following transitions: [2018-11-07 09:07:40,375 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:07:40,385 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:07:40,385 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:07:40,950 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:07:40,950 INFO L272 AbstractInterpreter]: Visited 284 different actions 846 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:07:40,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:07:40,997 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:07:40,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:07:40,997 INFO L194 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 [2018-11-07 09:07:41,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:07:41,014 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:07:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:07:41,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:07:41,538 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 09:07:41,666 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:07:41,667 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:07:41,961 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-11-07 09:07:42,498 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:07:42,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:07:42,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 09:07:42,530 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:07:42,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:07:42,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:07:42,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:07:42,533 INFO L87 Difference]: Start difference. First operand 1383 states and 1987 transitions. Second operand 10 states. [2018-11-07 09:08:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:08:06,282 INFO L93 Difference]: Finished difference Result 7311 states and 13212 transitions. [2018-11-07 09:08:06,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-07 09:08:06,283 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 422 [2018-11-07 09:08:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:08:06,336 INFO L225 Difference]: With dead ends: 7311 [2018-11-07 09:08:06,336 INFO L226 Difference]: Without dead ends: 6565 [2018-11-07 09:08:06,357 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 863 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=596, Invalid=2056, Unknown=0, NotChecked=0, Total=2652 [2018-11-07 09:08:06,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6565 states. [2018-11-07 09:08:06,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6565 to 6466. [2018-11-07 09:08:06,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6466 states. [2018-11-07 09:08:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6466 states to 6466 states and 10278 transitions. [2018-11-07 09:08:06,576 INFO L78 Accepts]: Start accepts. Automaton has 6466 states and 10278 transitions. Word has length 422 [2018-11-07 09:08:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:08:06,577 INFO L480 AbstractCegarLoop]: Abstraction has 6466 states and 10278 transitions. [2018-11-07 09:08:06,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:08:06,577 INFO L276 IsEmpty]: Start isEmpty. Operand 6466 states and 10278 transitions. [2018-11-07 09:08:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2018-11-07 09:08:06,592 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:08:06,592 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:08:06,593 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:08:06,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:06,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1406128765, now seen corresponding path program 1 times [2018-11-07 09:08:06,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:08:06,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:06,595 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:08:06,595 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:08:06,595 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:08:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:08:07,039 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:08:07,615 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 119 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-11-07 09:08:07,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:08:07,616 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:08:07,616 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 459 with the following transitions: [2018-11-07 09:08:07,617 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [782], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:08:07,626 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:08:07,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:08:08,281 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:08:08,282 INFO L272 AbstractInterpreter]: Visited 283 different actions 836 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:08:08,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:08:08,292 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:08:08,728 INFO L227 lantSequenceWeakener]: Weakened 455 states. On average, predicates are now at 80.46% of their original sizes. [2018-11-07 09:08:08,728 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:08:08,909 INFO L415 sIntCurrentIteration]: We unified 457 AI predicates to 457 [2018-11-07 09:08:08,909 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:08:08,909 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:08:08,916 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2018-11-07 09:08:08,916 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:08:08,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:08:08,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:08:08,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:08:08,918 INFO L87 Difference]: Start difference. First operand 6466 states and 10278 transitions. Second operand 10 states. [2018-11-07 09:09:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:24,477 INFO L93 Difference]: Finished difference Result 13546 states and 22095 transitions. [2018-11-07 09:09:24,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 09:09:24,477 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 458 [2018-11-07 09:09:24,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:24,513 INFO L225 Difference]: With dead ends: 13546 [2018-11-07 09:09:24,514 INFO L226 Difference]: Without dead ends: 7717 [2018-11-07 09:09:24,535 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 466 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:09:24,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7717 states. [2018-11-07 09:09:24,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7717 to 7711. [2018-11-07 09:09:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7711 states. [2018-11-07 09:09:24,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 11714 transitions. [2018-11-07 09:09:24,728 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 11714 transitions. Word has length 458 [2018-11-07 09:09:24,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:24,729 INFO L480 AbstractCegarLoop]: Abstraction has 7711 states and 11714 transitions. [2018-11-07 09:09:24,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:09:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 11714 transitions. [2018-11-07 09:09:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-11-07 09:09:24,745 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:24,746 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:24,746 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:24,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:24,747 INFO L82 PathProgramCache]: Analyzing trace with hash 240308005, now seen corresponding path program 1 times [2018-11-07 09:09:24,747 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:24,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:24,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:24,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:24,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:09:25,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:25,109 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:25,109 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 464 with the following transitions: [2018-11-07 09:09:25,110 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [699], [704], [706], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:25,114 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:25,115 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:25,589 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:25,589 INFO L272 AbstractInterpreter]: Visited 211 different actions 833 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:09:25,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:25,597 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:25,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:25,597 INFO L194 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 [2018-11-07 09:09:25,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:25,607 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:25,735 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:26,040 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:09:26,041 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:09:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:09:26,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:09:26,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-11-07 09:09:26,339 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:09:26,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 09:09:26,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 09:09:26,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:09:26,341 INFO L87 Difference]: Start difference. First operand 7711 states and 11714 transitions. Second operand 8 states. [2018-11-07 09:09:38,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:09:38,328 INFO L93 Difference]: Finished difference Result 21813 states and 34698 transitions. [2018-11-07 09:09:38,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-07 09:09:38,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 463 [2018-11-07 09:09:38,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:09:38,410 INFO L225 Difference]: With dead ends: 21813 [2018-11-07 09:09:38,411 INFO L226 Difference]: Without dead ends: 14416 [2018-11-07 09:09:38,456 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 972 GetRequests, 942 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=698, Unknown=0, NotChecked=0, Total=930 [2018-11-07 09:09:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14416 states. [2018-11-07 09:09:38,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14416 to 14294. [2018-11-07 09:09:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14294 states. [2018-11-07 09:09:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14294 states to 14294 states and 19984 transitions. [2018-11-07 09:09:38,820 INFO L78 Accepts]: Start accepts. Automaton has 14294 states and 19984 transitions. Word has length 463 [2018-11-07 09:09:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:09:38,821 INFO L480 AbstractCegarLoop]: Abstraction has 14294 states and 19984 transitions. [2018-11-07 09:09:38,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 09:09:38,821 INFO L276 IsEmpty]: Start isEmpty. Operand 14294 states and 19984 transitions. [2018-11-07 09:09:38,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-11-07 09:09:38,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:09:38,842 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:09:38,842 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:09:38,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:38,844 INFO L82 PathProgramCache]: Analyzing trace with hash -702672931, now seen corresponding path program 1 times [2018-11-07 09:09:38,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:09:38,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:38,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:38,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:09:38,845 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:09:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 179 proven. 4 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2018-11-07 09:09:39,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:39,754 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:09:39,754 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 537 with the following transitions: [2018-11-07 09:09:39,754 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [501], [503], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [827], [832], [834], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:09:39,759 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:09:39,759 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:09:40,272 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:09:40,273 INFO L272 AbstractInterpreter]: Visited 285 different actions 849 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:09:40,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:09:40,280 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:09:40,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:09:40,280 INFO L194 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 [2018-11-07 09:09:40,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:09:40,291 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:09:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:09:40,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:09:40,782 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:09:40,782 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:09:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 371 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:09:41,045 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:09:41,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:09:41,046 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:09:41,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:09:41,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:09:41,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:09:41,048 INFO L87 Difference]: Start difference. First operand 14294 states and 19984 transitions. Second operand 9 states. Received shutdown request... [2018-11-07 09:09:41,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:09:41,114 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:09:41,118 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:09:41,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:09:41 BoogieIcfgContainer [2018-11-07 09:09:41,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:09:41,119 INFO L168 Benchmark]: Toolchain (without parser) took 236398.91 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 09:09:41,121 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. [2018-11-07 09:09:41,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1197.98 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:41,122 INFO L168 Benchmark]: Boogie Procedure Inliner took 220.13 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:41,123 INFO L168 Benchmark]: Boogie Preprocessor took 177.74 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:41,124 INFO L168 Benchmark]: RCFGBuilder took 6721.95 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 285.2 MB). Peak memory consumption was 285.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:09:41,125 INFO L168 Benchmark]: TraceAbstraction took 228076.31 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -773.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 09:09:41,131 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 1197.98 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 220.13 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.9 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 177.74 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6721.95 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 285.2 MB). Peak memory consumption was 285.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228076.31 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -773.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 184]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 184). Cancelled while BasicCegarLoop was constructing difference of abstraction (14294states) and FLOYD_HOARE automaton (currently 4 states, 9 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 12 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 227.9s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 213.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2161 SDtfs, 15229 SDslu, 2602 SDs, 0 SdLazy, 24318 SolverSat, 6001 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 171.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 3839 GetRequests, 3705 SyntacticMatches, 8 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14294occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.0s AbstIntTime, 6 AbstIntIterations, 3 AbstIntStrong, 0.9976730561604809 AbsIntWeakeningRatio, 0.08520710059171598 AbsIntAvgWeakeningVarsNumRemoved, 15.550295857988166 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 232 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 3756 NumberOfCodeBlocks, 3756 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 5164 ConstructedInterpolants, 0 QuantifiedInterpolants, 7084058 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2037 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 3480/3811 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown