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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:17:54,920 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:17:54,922 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:17:54,935 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:17:54,936 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:17:54,944 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:17:54,945 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:17:54,947 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:17:54,949 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:17:54,949 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:17:54,950 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:17:54,951 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:17:54,952 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:17:54,952 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:17:54,954 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:17:54,954 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:17:54,958 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:17:54,960 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:17:54,966 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:17:54,970 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:17:54,973 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:17:54,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:17:54,980 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:17:54,980 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:17:54,980 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:17:54,981 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:17:54,984 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:17:54,984 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:17:54,988 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:17:54,991 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:17:54,991 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:17:54,992 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:17:54,992 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:17:54,992 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:17:54,993 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:17:54,996 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:17:54,996 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:17:55,024 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:17:55,024 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:17:55,026 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:17:55,027 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:17:55,027 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:17:55,027 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:17:55,027 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:17:55,027 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:17:55,028 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:17:55,028 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:17:55,028 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:17:55,029 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:17:55,029 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:17:55,029 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:17:55,030 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:17:55,030 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:17:55,030 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:17:55,030 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:17:55,030 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:17:55,031 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:17:55,031 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:17:55,031 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:17:55,031 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:17:55,031 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:17:55,032 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:17:55,034 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:17:55,034 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:17:55,034 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:17:55,034 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:17:55,034 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:17:55,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:17:55,035 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:17:55,035 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:17:55,035 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:17:55,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:17:55,127 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:17:55,132 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:17:55,133 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:17:55,134 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:17:55,135 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-11-07 03:17:55,215 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2345fd67/6fd923bcf0644b0d9374a9569ebf7c6f/FLAG789860d36 [2018-11-07 03:17:56,097 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:17:56,098 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-11-07 03:17:56,143 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2345fd67/6fd923bcf0644b0d9374a9569ebf7c6f/FLAG789860d36 [2018-11-07 03:17:56,161 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2345fd67/6fd923bcf0644b0d9374a9569ebf7c6f [2018-11-07 03:17:56,175 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:17:56,177 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:17:56,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:17:56,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:17:56,183 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:17:56,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:17:56" (1/1) ... [2018-11-07 03:17:56,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673adebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:56, skipping insertion in model container [2018-11-07 03:17:56,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:17:56" (1/1) ... [2018-11-07 03:17:56,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:17:56,413 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:17:58,133 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:17:58,141 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:17:58,859 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:17:58,897 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:17:58,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58 WrapperNode [2018-11-07 03:17:58,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:17:58,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:17:58,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:17:58,899 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:17:58,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (1/1) ... [2018-11-07 03:17:59,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (1/1) ... [2018-11-07 03:17:59,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:17:59,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:17:59,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:17:59,350 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:17:59,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (1/1) ... [2018-11-07 03:17:59,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (1/1) ... [2018-11-07 03:17:59,403 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (1/1) ... [2018-11-07 03:17:59,403 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (1/1) ... [2018-11-07 03:17:59,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (1/1) ... [2018-11-07 03:17:59,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (1/1) ... [2018-11-07 03:17:59,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (1/1) ... [2018-11-07 03:17:59,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:17:59,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:17:59,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:17:59,691 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:17:59,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (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 03:17:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:17:59,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:17:59,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:17:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:17:59,769 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:17:59,769 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:17:59,770 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:17:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:17:59,770 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:17:59,770 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:17:59,770 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:17:59,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:17:59,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:17:59,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:17:59,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:18:11,045 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:18:11,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:18:11 BoogieIcfgContainer [2018-11-07 03:18:11,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:18:11,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:18:11,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:18:11,050 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:18:11,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:17:56" (1/3) ... [2018-11-07 03:18:11,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5799dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:18:11, skipping insertion in model container [2018-11-07 03:18:11,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:17:58" (2/3) ... [2018-11-07 03:18:11,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5799dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:18:11, skipping insertion in model container [2018-11-07 03:18:11,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:18:11" (3/3) ... [2018-11-07 03:18:11,055 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26_true-unreach-call.c [2018-11-07 03:18:11,065 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:18:11,078 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:18:11,096 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:18:11,150 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:18:11,150 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:18:11,150 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:18:11,150 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:18:11,151 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:18:11,151 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:18:11,151 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:18:11,151 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:18:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 03:18:11,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-07 03:18:11,220 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:18:11,221 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] [2018-11-07 03:18:11,223 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:18:11,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:18:11,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1543659883, now seen corresponding path program 1 times [2018-11-07 03:18:11,231 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:18:11,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:11,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:18:11,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:11,276 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:18:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:18:11,673 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 03:18:11,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:18:11,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:18:11,677 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:18:11,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:18:11,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:18:11,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:18:11,705 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 03:18:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:18:23,652 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 03:18:23,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:18:23,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-11-07 03:18:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:18:23,709 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 03:18:23,709 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 03:18:23,725 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:18:23,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 03:18:23,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 03:18:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 03:18:23,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 03:18:23,922 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 45 [2018-11-07 03:18:23,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:18:23,923 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 03:18:23,923 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:18:23,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 03:18:23,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 03:18:23,934 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:18:23,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:18:23,935 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:18:23,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:18:23,935 INFO L82 PathProgramCache]: Analyzing trace with hash 369865390, now seen corresponding path program 1 times [2018-11-07 03:18:23,935 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:18:23,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:23,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:18:23,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:23,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:18:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:18:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:18:24,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:18:24,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:18:24,305 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:18:24,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:18:24,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:18:24,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:18:24,308 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 03:18:35,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:18:35,827 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 03:18:35,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:18:35,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2018-11-07 03:18:35,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:18:35,857 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 03:18:35,858 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 03:18:35,867 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:18:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 03:18:35,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 03:18:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 03:18:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 03:18:35,992 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 115 [2018-11-07 03:18:35,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:18:35,992 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 03:18:35,992 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:18:35,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 03:18:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-07 03:18:36,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:18:36,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:18:36,002 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:18:36,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:18:36,002 INFO L82 PathProgramCache]: Analyzing trace with hash 241566930, now seen corresponding path program 1 times [2018-11-07 03:18:36,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:18:36,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:36,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:18:36,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:36,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:18:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:18:36,225 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:18:36,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:18:36,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:18:36,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:18:36,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:18:36,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:18:36,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:18:36,227 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 03:18:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:18:45,204 INFO L93 Difference]: Finished difference Result 10955 states and 17866 transitions. [2018-11-07 03:18:45,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:18:45,207 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-11-07 03:18:45,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:18:45,250 INFO L225 Difference]: With dead ends: 10955 [2018-11-07 03:18:45,251 INFO L226 Difference]: Without dead ends: 7274 [2018-11-07 03:18:45,265 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:18:45,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2018-11-07 03:18:45,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7167. [2018-11-07 03:18:45,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2018-11-07 03:18:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10519 transitions. [2018-11-07 03:18:45,475 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10519 transitions. Word has length 117 [2018-11-07 03:18:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:18:45,476 INFO L480 AbstractCegarLoop]: Abstraction has 7167 states and 10519 transitions. [2018-11-07 03:18:45,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:18:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10519 transitions. [2018-11-07 03:18:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 03:18:45,482 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:18:45,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:18:45,483 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:18:45,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:18:45,483 INFO L82 PathProgramCache]: Analyzing trace with hash 572519882, now seen corresponding path program 1 times [2018-11-07 03:18:45,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:18:45,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:45,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:18:45,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:45,486 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:18:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:18:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:18:45,769 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:18:45,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:18:45,769 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:18:45,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:18:45,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:18:45,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:18:45,772 INFO L87 Difference]: Start difference. First operand 7167 states and 10519 transitions. Second operand 4 states. [2018-11-07 03:18:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:18:55,335 INFO L93 Difference]: Finished difference Result 27645 states and 43286 transitions. [2018-11-07 03:18:55,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:18:55,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2018-11-07 03:18:55,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:18:55,440 INFO L225 Difference]: With dead ends: 27645 [2018-11-07 03:18:55,440 INFO L226 Difference]: Without dead ends: 20484 [2018-11-07 03:18:55,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:18:55,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20484 states. [2018-11-07 03:18:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20484 to 20445. [2018-11-07 03:18:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20445 states. [2018-11-07 03:18:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20445 states to 20445 states and 29105 transitions. [2018-11-07 03:18:56,045 INFO L78 Accepts]: Start accepts. Automaton has 20445 states and 29105 transitions. Word has length 161 [2018-11-07 03:18:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:18:56,045 INFO L480 AbstractCegarLoop]: Abstraction has 20445 states and 29105 transitions. [2018-11-07 03:18:56,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:18:56,046 INFO L276 IsEmpty]: Start isEmpty. Operand 20445 states and 29105 transitions. [2018-11-07 03:18:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-11-07 03:18:56,049 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:18:56,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:18:56,050 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:18:56,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:18:56,050 INFO L82 PathProgramCache]: Analyzing trace with hash 499433324, now seen corresponding path program 1 times [2018-11-07 03:18:56,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:18:56,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:56,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:18:56,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:18:56,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:18:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:18:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:18:56,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:18:56,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:18:56,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:18:56,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:18:56,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:18:56,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:18:56,283 INFO L87 Difference]: Start difference. First operand 20445 states and 29105 transitions. Second operand 4 states. [2018-11-07 03:19:05,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:19:05,449 INFO L93 Difference]: Finished difference Result 46538 states and 66017 transitions. [2018-11-07 03:19:05,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:19:05,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2018-11-07 03:19:05,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:19:05,542 INFO L225 Difference]: With dead ends: 46538 [2018-11-07 03:19:05,543 INFO L226 Difference]: Without dead ends: 26099 [2018-11-07 03:19:05,608 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:19:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26099 states. [2018-11-07 03:19:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26099 to 26098. [2018-11-07 03:19:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26098 states. [2018-11-07 03:19:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26098 states to 26098 states and 32701 transitions. [2018-11-07 03:19:06,180 INFO L78 Accepts]: Start accepts. Automaton has 26098 states and 32701 transitions. Word has length 166 [2018-11-07 03:19:06,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:19:06,180 INFO L480 AbstractCegarLoop]: Abstraction has 26098 states and 32701 transitions. [2018-11-07 03:19:06,180 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:19:06,181 INFO L276 IsEmpty]: Start isEmpty. Operand 26098 states and 32701 transitions. [2018-11-07 03:19:06,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-07 03:19:06,198 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:19:06,198 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:19:06,198 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:19:06,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:19:06,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2012871233, now seen corresponding path program 1 times [2018-11-07 03:19:06,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:19:06,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:19:06,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:19:06,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:19:06,200 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:19:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:19:06,938 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:19:06,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:19:06,938 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:19:06,940 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-11-07 03:19:06,948 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2887], [2889], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3363], [3365], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3598], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 03:19:07,055 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:19:07,056 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:19:17,731 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:19:18,332 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:19:18,334 INFO L272 AbstractInterpreter]: Visited 170 different actions 170 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:19:18,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:19:18,378 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:19:25,245 INFO L227 lantSequenceWeakener]: Weakened 308 states. On average, predicates are now at 71.36% of their original sizes. [2018-11-07 03:19:25,245 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:19:27,001 INFO L415 sIntCurrentIteration]: We unified 330 AI predicates to 330 [2018-11-07 03:19:27,001 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:19:27,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:19:27,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [6] total 16 [2018-11-07 03:19:27,002 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:19:27,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 03:19:27,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 03:19:27,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-11-07 03:19:27,004 INFO L87 Difference]: Start difference. First operand 26098 states and 32701 transitions. Second operand 12 states. Received shutdown request... [2018-11-07 03:21:38,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 03:21:38,083 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:21:38,090 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:21:38,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:21:38 BoogieIcfgContainer [2018-11-07 03:21:38,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:21:38,091 INFO L168 Benchmark]: Toolchain (without parser) took 221915.83 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 1.9 GB in the end (delta: -538.7 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 03:21:38,093 INFO L168 Benchmark]: CDTParser took 0.25 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 03:21:38,094 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2720.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 03:21:38,095 INFO L168 Benchmark]: Boogie Procedure Inliner took 450.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 03:21:38,096 INFO L168 Benchmark]: Boogie Preprocessor took 340.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:21:38,097 INFO L168 Benchmark]: RCFGBuilder took 11354.85 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 187.7 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -8.1 MB). Peak memory consumption was 681.0 MB. Max. memory is 7.1 GB. [2018-11-07 03:21:38,098 INFO L168 Benchmark]: TraceAbstraction took 207044.32 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 278.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 03:21:38,103 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 2720.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 450.72 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 792.7 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 340.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11354.85 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 187.7 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -8.1 MB). Peak memory consumption was 681.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207044.32 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 278.9 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (26098states) and FLOYD_HOARE automaton (currently 11 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (2909 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 206.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 182.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3895 SDtfs, 15104 SDslu, 2256 SDs, 0 SdLazy, 23581 SolverSat, 6404 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 133.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 369 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26098occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9971841491841489 AbsIntWeakeningRatio, 0.09090909090909091 AbsIntAvgWeakeningVarsNumRemoved, 24.69090909090909 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 1019 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 935 NumberOfCodeBlocks, 935 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 929 ConstructedInterpolants, 0 QuantifiedInterpolants, 627665 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 345/347 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown