java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 20:57:49,871 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 20:57:49,874 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 20:57:49,893 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 20:57:49,894 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 20:57:49,895 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 20:57:49,896 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 20:57:49,899 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 20:57:49,902 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 20:57:49,903 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 20:57:49,905 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 20:57:49,906 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 20:57:49,907 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 20:57:49,908 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 20:57:49,909 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 20:57:49,919 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 20:57:49,920 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 20:57:49,922 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 20:57:49,925 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 20:57:49,928 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 20:57:49,929 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 20:57:49,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 20:57:49,937 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 20:57:49,937 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 20:57:49,937 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 20:57:49,941 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 20:57:49,942 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 20:57:49,945 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 20:57:49,946 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 20:57:49,947 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 20:57:49,950 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 20:57:49,951 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 20:57:49,951 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 20:57:49,951 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 20:57:49,952 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 20:57:49,954 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 20:57:49,955 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 20:57:49,981 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 20:57:49,981 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 20:57:49,982 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 20:57:49,982 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 20:57:49,983 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 20:57:49,984 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 20:57:49,984 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 20:57:49,984 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 20:57:49,984 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 20:57:49,985 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 20:57:49,985 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 20:57:49,985 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 20:57:49,986 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 20:57:49,987 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 20:57:49,987 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 20:57:49,987 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 20:57:49,987 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 20:57:49,987 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 20:57:49,988 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 20:57:49,988 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 20:57:49,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 20:57:49,988 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 20:57:49,989 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 20:57:49,990 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 20:57:49,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 20:57:49,991 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 20:57:49,991 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 20:57:49,991 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 20:57:49,992 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 20:57:49,992 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 20:57:49,992 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 20:57:49,992 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 20:57:49,992 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 20:57:49,993 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 20:57:50,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 20:57:50,092 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 20:57:50,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 20:57:50,099 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 20:57:50,099 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 20:57:50,100 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label20_true-unreach-call.c [2018-10-24 20:57:50,171 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef7472944/9d5647f1abe04118b694178aaedef70e/FLAG74e44db8d [2018-10-24 20:57:50,744 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 20:57:50,747 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label20_true-unreach-call.c [2018-10-24 20:57:50,774 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef7472944/9d5647f1abe04118b694178aaedef70e/FLAG74e44db8d [2018-10-24 20:57:50,789 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ef7472944/9d5647f1abe04118b694178aaedef70e [2018-10-24 20:57:50,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 20:57:50,802 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 20:57:50,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 20:57:50,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 20:57:50,808 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 20:57:50,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:57:50" (1/1) ... [2018-10-24 20:57:50,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11290b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:50, skipping insertion in model container [2018-10-24 20:57:50,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:57:50" (1/1) ... [2018-10-24 20:57:50,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 20:57:50,885 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 20:57:51,310 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 20:57:51,315 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 20:57:51,435 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 20:57:51,459 INFO L193 MainTranslator]: Completed translation [2018-10-24 20:57:51,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51 WrapperNode [2018-10-24 20:57:51,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 20:57:51,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 20:57:51,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 20:57:51,461 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 20:57:51,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (1/1) ... [2018-10-24 20:57:51,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (1/1) ... [2018-10-24 20:57:51,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 20:57:51,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 20:57:51,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 20:57:51,665 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 20:57:51,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (1/1) ... [2018-10-24 20:57:51,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (1/1) ... [2018-10-24 20:57:51,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (1/1) ... [2018-10-24 20:57:51,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (1/1) ... [2018-10-24 20:57:51,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (1/1) ... [2018-10-24 20:57:51,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (1/1) ... [2018-10-24 20:57:51,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (1/1) ... [2018-10-24 20:57:51,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 20:57:51,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 20:57:51,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 20:57:51,771 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 20:57:51,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 20:57:51,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 20:57:51,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 20:57:51,849 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 20:57:51,849 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 20:57:51,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 20:57:51,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 20:57:51,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 20:57:51,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 20:57:55,174 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 20:57:55,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:57:55 BoogieIcfgContainer [2018-10-24 20:57:55,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 20:57:55,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 20:57:55,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 20:57:55,180 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 20:57:55,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 08:57:50" (1/3) ... [2018-10-24 20:57:55,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a1850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:57:55, skipping insertion in model container [2018-10-24 20:57:55,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:57:51" (2/3) ... [2018-10-24 20:57:55,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@424a1850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:57:55, skipping insertion in model container [2018-10-24 20:57:55,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:57:55" (3/3) ... [2018-10-24 20:57:55,185 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label20_true-unreach-call.c [2018-10-24 20:57:55,197 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 20:57:55,206 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 20:57:55,225 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 20:57:55,266 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 20:57:55,266 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 20:57:55,266 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 20:57:55,266 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 20:57:55,267 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 20:57:55,267 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 20:57:55,267 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 20:57:55,267 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 20:57:55,295 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 20:57:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-24 20:57:55,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:57:55,305 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] [2018-10-24 20:57:55,308 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:57:55,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:57:55,315 INFO L82 PathProgramCache]: Analyzing trace with hash -2089647903, now seen corresponding path program 1 times [2018-10-24 20:57:55,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:57:55,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:55,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:57:55,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:55,373 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:57:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:57:55,787 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 20:57:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:57:55,816 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:57:55,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 20:57:55,817 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:57:55,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 20:57:55,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 20:57:55,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 20:57:55,841 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 20:57:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:57:58,191 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 20:57:58,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 20:57:58,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-10-24 20:57:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:57:58,214 INFO L225 Difference]: With dead ends: 574 [2018-10-24 20:57:58,214 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 20:57:58,222 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 20:57:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 20:57:58,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 20:57:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 20:57:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 20:57:58,302 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 35 [2018-10-24 20:57:58,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:57:58,303 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 20:57:58,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 20:57:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 20:57:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-24 20:57:58,310 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:57:58,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:57:58,311 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:57:58,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:57:58,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1879649099, now seen corresponding path program 1 times [2018-10-24 20:57:58,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:57:58,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:58,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:57:58,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:57:58,314 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:57:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:57:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:57:58,633 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:57:58,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 20:57:58,634 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:57:58,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 20:57:58,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 20:57:58,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 20:57:58,637 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-24 20:58:03,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:03,435 INFO L93 Difference]: Finished difference Result 1290 states and 2315 transitions. [2018-10-24 20:58:03,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 20:58:03,436 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-10-24 20:58:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:03,447 INFO L225 Difference]: With dead ends: 1290 [2018-10-24 20:58:03,447 INFO L226 Difference]: Without dead ends: 940 [2018-10-24 20:58:03,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 20:58:03,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2018-10-24 20:58:03,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 925. [2018-10-24 20:58:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 925 states. [2018-10-24 20:58:03,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1443 transitions. [2018-10-24 20:58:03,535 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1443 transitions. Word has length 118 [2018-10-24 20:58:03,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:03,535 INFO L481 AbstractCegarLoop]: Abstraction has 925 states and 1443 transitions. [2018-10-24 20:58:03,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 20:58:03,536 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1443 transitions. [2018-10-24 20:58:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 20:58:03,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:03,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:58:03,541 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:03,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:03,542 INFO L82 PathProgramCache]: Analyzing trace with hash 820065387, now seen corresponding path program 1 times [2018-10-24 20:58:03,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:03,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:03,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:03,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:03,544 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:03,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:03,834 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:03,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:58:03,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 20:58:03,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:03,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 20:58:03,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 20:58:03,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 20:58:03,836 INFO L87 Difference]: Start difference. First operand 925 states and 1443 transitions. Second operand 6 states. [2018-10-24 20:58:08,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:08,519 INFO L93 Difference]: Finished difference Result 2535 states and 4089 transitions. [2018-10-24 20:58:08,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 20:58:08,520 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-24 20:58:08,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:08,533 INFO L225 Difference]: With dead ends: 2535 [2018-10-24 20:58:08,533 INFO L226 Difference]: Without dead ends: 1616 [2018-10-24 20:58:08,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 20:58:08,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2018-10-24 20:58:08,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1585. [2018-10-24 20:58:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2018-10-24 20:58:08,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2320 transitions. [2018-10-24 20:58:08,598 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2320 transitions. Word has length 134 [2018-10-24 20:58:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:08,598 INFO L481 AbstractCegarLoop]: Abstraction has 1585 states and 2320 transitions. [2018-10-24 20:58:08,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 20:58:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2320 transitions. [2018-10-24 20:58:08,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-24 20:58:08,603 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:08,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 20:58:08,604 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:08,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:08,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1308687845, now seen corresponding path program 1 times [2018-10-24 20:58:08,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:08,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:08,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:08,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:08,606 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:08,849 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 20:58:08,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 20:58:08,849 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:08,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 20:58:08,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 20:58:08,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 20:58:08,850 INFO L87 Difference]: Start difference. First operand 1585 states and 2320 transitions. Second operand 6 states. [2018-10-24 20:58:10,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 20:58:10,254 INFO L93 Difference]: Finished difference Result 3506 states and 5314 transitions. [2018-10-24 20:58:10,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 20:58:10,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-10-24 20:58:10,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 20:58:10,274 INFO L225 Difference]: With dead ends: 3506 [2018-10-24 20:58:10,275 INFO L226 Difference]: Without dead ends: 1927 [2018-10-24 20:58:10,284 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 20:58:10,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2018-10-24 20:58:10,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1888. [2018-10-24 20:58:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1888 states. [2018-10-24 20:58:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2674 transitions. [2018-10-24 20:58:10,360 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2674 transitions. Word has length 158 [2018-10-24 20:58:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 20:58:10,360 INFO L481 AbstractCegarLoop]: Abstraction has 1888 states and 2674 transitions. [2018-10-24 20:58:10,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 20:58:10,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2674 transitions. [2018-10-24 20:58:10,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-24 20:58:10,367 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 20:58:10,367 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 20:58:10,368 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 20:58:10,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:10,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1928767200, now seen corresponding path program 1 times [2018-10-24 20:58:10,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 20:58:10,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:10,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 20:58:10,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 20:58:10,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 20:58:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 20:58:10,841 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-24 20:58:11,036 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 20:58:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 20:58:11,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 20:58:11,363 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 20:58:11,364 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-10-24 20:58:11,366 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [181], [183], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [546], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 20:58:11,434 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 20:58:11,434 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 20:58:13,899 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 20:58:27,665 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 20:58:27,667 INFO L272 AbstractInterpreter]: Visited 91 different actions 516 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 20:58:27,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 20:58:27,683 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 20:58:30,945 INFO L232 lantSequenceWeakener]: Weakened 13 states. On average, predicates are now at 77.27% of their original sizes. [2018-10-24 20:58:30,946 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 20:58:57,877 INFO L413 sIntCurrentIteration]: We have 197 unified AI predicates [2018-10-24 20:58:57,878 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 20:58:57,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 20:58:57,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2018-10-24 20:58:57,879 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 20:58:57,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 20:58:57,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 20:58:57,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-10-24 20:58:57,880 INFO L87 Difference]: Start difference. First operand 1888 states and 2674 transitions. Second operand 18 states. [2018-10-24 21:01:43,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:01:43,873 INFO L93 Difference]: Finished difference Result 4669 states and 6732 transitions. [2018-10-24 21:01:43,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-24 21:01:43,873 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 198 [2018-10-24 21:01:43,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:01:43,891 INFO L225 Difference]: With dead ends: 4669 [2018-10-24 21:01:43,891 INFO L226 Difference]: Without dead ends: 2787 [2018-10-24 21:01:43,902 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 203 GetRequests, 153 SyntacticMatches, 28 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 27.7s TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2018-10-24 21:01:43,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2018-10-24 21:01:44,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2593. [2018-10-24 21:01:44,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2593 states. [2018-10-24 21:01:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 3438 transitions. [2018-10-24 21:01:44,060 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 3438 transitions. Word has length 198 [2018-10-24 21:01:44,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:01:44,061 INFO L481 AbstractCegarLoop]: Abstraction has 2593 states and 3438 transitions. [2018-10-24 21:01:44,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-24 21:01:44,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 3438 transitions. [2018-10-24 21:01:44,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-10-24 21:01:44,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:01:44,070 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:01:44,070 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:01:44,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:01:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1891623144, now seen corresponding path program 1 times [2018-10-24 21:01:44,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:01:44,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:01:44,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:01:44,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:01:44,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:01:44,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:01:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:01:44,726 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:01:44,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:01:44,728 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-10-24 21:01:44,728 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [181], [183], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [546], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 21:01:44,742 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:01:44,742 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:01:47,570 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:01:49,900 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 21:01:49,901 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 21:01:49,902 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 21:01:49,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:01:49,902 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:01:49,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:01:49,914 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:01:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:01:50,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:01:50,064 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 21:01:50,265 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:01:50,266 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:01:50,276 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:01:50,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:01:50 BoogieIcfgContainer [2018-10-24 21:01:50,277 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:01:50,278 INFO L168 Benchmark]: Toolchain (without parser) took 239476.98 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 177.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:01:50,280 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:01:50,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:01:50,286 INFO L168 Benchmark]: Boogie Procedure Inliner took 204.34 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:01:50,287 INFO L168 Benchmark]: Boogie Preprocessor took 105.23 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:01:50,288 INFO L168 Benchmark]: RCFGBuilder took 3404.28 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.7 MB). Peak memory consumption was 131.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:01:50,291 INFO L168 Benchmark]: TraceAbstraction took 235100.77 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:01:50,297 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 656.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 204.34 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -816.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.23 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3404.28 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.7 MB). Peak memory consumption was 131.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235100.77 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.9 GB in the end (delta: -1.8 GB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 88). Cancelled while BasicCegarLoop was analyzing trace of length 235 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 235.0s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 179.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 547 SDtfs, 5425 SDslu, 432 SDs, 0 SdLazy, 5304 SolverSat, 1157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 237 GetRequests, 162 SyntacticMatches, 32 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 28.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2593occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.4s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9940134628117414 AbsIntWeakeningRatio, 0.1319796954314721 AbsIntAvgWeakeningVarsNumRemoved, 234.7005076142132 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 279 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 643 NumberOfCodeBlocks, 643 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 779155 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 218/220 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown