java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 17:57:34,080 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 17:57:34,082 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 17:57:34,094 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 17:57:34,095 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 17:57:34,096 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 17:57:34,097 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 17:57:34,099 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 17:57:34,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 17:57:34,102 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 17:57:34,103 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 17:57:34,103 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 17:57:34,104 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 17:57:34,105 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 17:57:34,106 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 17:57:34,107 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 17:57:34,108 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 17:57:34,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 17:57:34,112 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 17:57:34,114 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 17:57:34,115 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 17:57:34,116 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 17:57:34,119 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 17:57:34,119 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 17:57:34,119 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 17:57:34,120 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 17:57:34,121 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 17:57:34,122 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 17:57:34,123 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 17:57:34,124 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 17:57:34,125 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 17:57:34,125 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 17:57:34,126 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 17:57:34,126 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 17:57:34,127 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 17:57:34,128 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 17:57:34,128 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 17:57:34,154 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 17:57:34,154 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 17:57:34,155 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 17:57:34,155 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 17:57:34,155 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 17:57:34,156 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 17:57:34,156 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 17:57:34,156 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 17:57:34,156 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 17:57:34,157 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 17:57:34,157 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 17:57:34,157 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 17:57:34,157 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 17:57:34,158 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 17:57:34,158 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 17:57:34,159 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 17:57:34,159 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 17:57:34,159 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 17:57:34,159 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 17:57:34,159 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 17:57:34,160 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 17:57:34,160 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 17:57:34,160 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 17:57:34,160 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 17:57:34,161 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 17:57:34,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:57:34,161 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 17:57:34,161 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 17:57:34,161 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 17:57:34,162 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 17:57:34,162 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 17:57:34,162 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 17:57:34,162 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 17:57:34,162 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 17:57:34,163 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 17:57:34,212 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 17:57:34,226 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 17:57:34,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 17:57:34,232 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 17:57:34,232 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 17:57:34,233 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c [2018-11-07 17:57:34,293 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69e47eaa/72e0060db20e48babd9ecf6176535164/FLAGd17b005db [2018-11-07 17:57:35,099 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 17:57:35,100 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label45_false-unreach-call.c [2018-11-07 17:57:35,138 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69e47eaa/72e0060db20e48babd9ecf6176535164/FLAGd17b005db [2018-11-07 17:57:35,160 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c69e47eaa/72e0060db20e48babd9ecf6176535164 [2018-11-07 17:57:35,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 17:57:35,176 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 17:57:35,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 17:57:35,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 17:57:35,184 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 17:57:35,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:57:35" (1/1) ... [2018-11-07 17:57:35,189 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49219dbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:35, skipping insertion in model container [2018-11-07 17:57:35,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:57:35" (1/1) ... [2018-11-07 17:57:35,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 17:57:35,386 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 17:57:36,805 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:57:36,810 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 17:57:37,547 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:57:37,582 INFO L193 MainTranslator]: Completed translation [2018-11-07 17:57:37,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37 WrapperNode [2018-11-07 17:57:37,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 17:57:37,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 17:57:37,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 17:57:37,584 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 17:57:37,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (1/1) ... [2018-11-07 17:57:37,928 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (1/1) ... [2018-11-07 17:57:37,939 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 17:57:37,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 17:57:37,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 17:57:37,940 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 17:57:37,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (1/1) ... [2018-11-07 17:57:37,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (1/1) ... [2018-11-07 17:57:37,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (1/1) ... [2018-11-07 17:57:37,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (1/1) ... [2018-11-07 17:57:38,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (1/1) ... [2018-11-07 17:57:38,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (1/1) ... [2018-11-07 17:57:38,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (1/1) ... [2018-11-07 17:57:38,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 17:57:38,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 17:57:38,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 17:57:38,239 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 17:57:38,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (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 17:57:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 17:57:38,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 17:57:38,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 17:57:38,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 17:57:38,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 17:57:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 17:57:38,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 17:57:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 17:57:38,317 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 17:57:38,317 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 17:57:38,318 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 17:57:38,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 17:57:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 17:57:38,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 17:57:38,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 17:57:48,397 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 17:57:48,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:57:48 BoogieIcfgContainer [2018-11-07 17:57:48,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 17:57:48,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 17:57:48,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 17:57:48,402 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 17:57:48,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:57:35" (1/3) ... [2018-11-07 17:57:48,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3453ff30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:57:48, skipping insertion in model container [2018-11-07 17:57:48,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:57:37" (2/3) ... [2018-11-07 17:57:48,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3453ff30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:57:48, skipping insertion in model container [2018-11-07 17:57:48,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:57:48" (3/3) ... [2018-11-07 17:57:48,406 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label45_false-unreach-call.c [2018-11-07 17:57:48,416 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 17:57:48,426 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 17:57:48,444 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 17:57:48,490 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 17:57:48,490 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 17:57:48,490 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 17:57:48,490 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 17:57:48,491 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 17:57:48,491 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 17:57:48,491 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 17:57:48,491 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 17:57:48,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 17:57:48,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-07 17:57:48,544 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:57:48,545 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:57:48,547 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:57:48,552 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:57:48,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1438906236, now seen corresponding path program 1 times [2018-11-07 17:57:48,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:57:48,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:57:48,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:57:48,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:57:48,598 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:57:48,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:57:48,980 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 17:57:48,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:57:48,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:57:48,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:57:48,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:57:49,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:57:49,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:57:49,009 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 17:58:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:58:01,116 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-11-07 17:58:01,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:58:01,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-07 17:58:01,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:58:01,173 INFO L225 Difference]: With dead ends: 4063 [2018-11-07 17:58:01,174 INFO L226 Difference]: Without dead ends: 2937 [2018-11-07 17:58:01,187 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:58:01,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-07 17:58:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-11-07 17:58:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-11-07 17:58:01,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-11-07 17:58:01,388 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 14 [2018-11-07 17:58:01,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:58:01,389 INFO L480 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-11-07 17:58:01,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:58:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-11-07 17:58:01,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-11-07 17:58:01,394 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:58:01,394 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:58:01,394 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:58:01,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:58:01,395 INFO L82 PathProgramCache]: Analyzing trace with hash 78818025, now seen corresponding path program 1 times [2018-11-07 17:58:01,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:58:01,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:58:01,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:58:01,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:58:01,397 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:58:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:58:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:58:01,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:58:01,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:58:01,981 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:58:01,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:58:01,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:58:01,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:58:01,987 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-11-07 17:58:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:58:16,892 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-11-07 17:58:16,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:58:16,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-11-07 17:58:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:58:16,922 INFO L225 Difference]: With dead ends: 7277 [2018-11-07 17:58:16,922 INFO L226 Difference]: Without dead ends: 5301 [2018-11-07 17:58:16,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 17:58:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-11-07 17:58:17,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-11-07 17:58:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-11-07 17:58:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-11-07 17:58:17,065 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 85 [2018-11-07 17:58:17,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:58:17,065 INFO L480 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-11-07 17:58:17,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:58:17,066 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-11-07 17:58:17,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-07 17:58:17,069 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:58:17,069 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:58:17,070 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:58:17,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:58:17,070 INFO L82 PathProgramCache]: Analyzing trace with hash 418123736, now seen corresponding path program 1 times [2018-11-07 17:58:17,070 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:58:17,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:58:17,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:58:17,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:58:17,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:58:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:58:17,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:58:17,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:58:17,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:58:17,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:58:17,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:58:17,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:58:17,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:58:17,283 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-11-07 17:58:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:58:28,045 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-11-07 17:58:28,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:58:28,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-11-07 17:58:28,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:58:28,090 INFO L225 Difference]: With dead ends: 13914 [2018-11-07 17:58:28,090 INFO L226 Difference]: Without dead ends: 8668 [2018-11-07 17:58:28,109 INFO L604 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 [2018-11-07 17:58:28,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-11-07 17:58:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-11-07 17:58:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-11-07 17:58:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-11-07 17:58:28,315 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 88 [2018-11-07 17:58:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:58:28,316 INFO L480 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-11-07 17:58:28,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:58:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-11-07 17:58:28,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-07 17:58:28,320 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:58:28,321 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:58:28,321 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:58:28,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:58:28,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1382541628, now seen corresponding path program 1 times [2018-11-07 17:58:28,321 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:58:28,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:58:28,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:58:28,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:58:28,323 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:58:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:58:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:58:28,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:58:28,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 17:58:28,678 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:58:28,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 17:58:28,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 17:58:28,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 17:58:28,680 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 5 states. [2018-11-07 17:58:40,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:58:40,266 INFO L93 Difference]: Finished difference Result 25970 states and 40304 transitions. [2018-11-07 17:58:40,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 17:58:40,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-11-07 17:58:40,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:58:40,343 INFO L225 Difference]: With dead ends: 25970 [2018-11-07 17:58:40,343 INFO L226 Difference]: Without dead ends: 17371 [2018-11-07 17:58:40,368 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 17:58:40,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17371 states. [2018-11-07 17:58:40,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17371 to 17106. [2018-11-07 17:58:40,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17106 states. [2018-11-07 17:58:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17106 states to 17106 states and 24299 transitions. [2018-11-07 17:58:40,733 INFO L78 Accepts]: Start accepts. Automaton has 17106 states and 24299 transitions. Word has length 98 [2018-11-07 17:58:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:58:40,734 INFO L480 AbstractCegarLoop]: Abstraction has 17106 states and 24299 transitions. [2018-11-07 17:58:40,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 17:58:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 17106 states and 24299 transitions. [2018-11-07 17:58:40,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 17:58:40,737 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:58:40,737 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:58:40,737 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:58:40,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:58:40,738 INFO L82 PathProgramCache]: Analyzing trace with hash -916894984, now seen corresponding path program 1 times [2018-11-07 17:58:40,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:58:40,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:58:40,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:58:40,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:58:40,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:58:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:58:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:58:40,885 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:58:40,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 17:58:40,885 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:58:40,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:58:40,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:58:40,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:58:40,886 INFO L87 Difference]: Start difference. First operand 17106 states and 24299 transitions. Second operand 3 states. [2018-11-07 17:58:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:58:46,443 INFO L93 Difference]: Finished difference Result 47325 states and 70885 transitions. [2018-11-07 17:58:46,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:58:46,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2018-11-07 17:58:46,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:58:46,568 INFO L225 Difference]: With dead ends: 47325 [2018-11-07 17:58:46,568 INFO L226 Difference]: Without dead ends: 30225 [2018-11-07 17:58:46,638 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:58:46,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30225 states. [2018-11-07 17:58:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30225 to 30223. [2018-11-07 17:58:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30223 states. [2018-11-07 17:58:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30223 states to 30223 states and 42636 transitions. [2018-11-07 17:58:47,508 INFO L78 Accepts]: Start accepts. Automaton has 30223 states and 42636 transitions. Word has length 115 [2018-11-07 17:58:47,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:58:47,509 INFO L480 AbstractCegarLoop]: Abstraction has 30223 states and 42636 transitions. [2018-11-07 17:58:47,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:58:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 30223 states and 42636 transitions. [2018-11-07 17:58:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-07 17:58:47,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:58:47,513 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:58:47,513 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:58:47,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:58:47,514 INFO L82 PathProgramCache]: Analyzing trace with hash 196829947, now seen corresponding path program 1 times [2018-11-07 17:58:47,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:58:47,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:58:47,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:58:47,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:58:47,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:58:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:58:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:58:48,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:58:48,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:58:48,095 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:58:48,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:58:48,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:58:48,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:58:48,096 INFO L87 Difference]: Start difference. First operand 30223 states and 42636 transitions. Second operand 6 states. [2018-11-07 17:59:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:59:01,525 INFO L93 Difference]: Finished difference Result 98406 states and 150465 transitions. [2018-11-07 17:59:01,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:59:01,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2018-11-07 17:59:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:59:01,835 INFO L225 Difference]: With dead ends: 98406 [2018-11-07 17:59:01,835 INFO L226 Difference]: Without dead ends: 68189 [2018-11-07 17:59:01,960 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 17:59:02,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68189 states. [2018-11-07 17:59:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68189 to 68120. [2018-11-07 17:59:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68120 states. [2018-11-07 17:59:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68120 states to 68120 states and 98393 transitions. [2018-11-07 17:59:03,337 INFO L78 Accepts]: Start accepts. Automaton has 68120 states and 98393 transitions. Word has length 156 [2018-11-07 17:59:03,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:59:03,338 INFO L480 AbstractCegarLoop]: Abstraction has 68120 states and 98393 transitions. [2018-11-07 17:59:03,338 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:59:03,339 INFO L276 IsEmpty]: Start isEmpty. Operand 68120 states and 98393 transitions. [2018-11-07 17:59:03,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-07 17:59:03,343 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:59:03,344 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:59:03,344 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:59:03,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:59:03,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1968456128, now seen corresponding path program 1 times [2018-11-07 17:59:03,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:59:03,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:59:03,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:59:03,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:59:03,346 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:59:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:59:03,528 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-11-07 17:59:03,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:59:03,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 17:59:03,529 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:59:03,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:59:03,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:59:03,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:59:03,530 INFO L87 Difference]: Start difference. First operand 68120 states and 98393 transitions. Second operand 3 states. [2018-11-07 17:59:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:59:09,971 INFO L93 Difference]: Finished difference Result 136242 states and 197795 transitions. [2018-11-07 17:59:09,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:59:09,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 216 [2018-11-07 17:59:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:59:10,191 INFO L225 Difference]: With dead ends: 136242 [2018-11-07 17:59:10,191 INFO L226 Difference]: Without dead ends: 68128 [2018-11-07 17:59:10,335 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:59:10,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68128 states. [2018-11-07 17:59:11,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68128 to 68123. [2018-11-07 17:59:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68123 states. [2018-11-07 17:59:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68123 states to 68123 states and 92530 transitions. [2018-11-07 17:59:11,513 INFO L78 Accepts]: Start accepts. Automaton has 68123 states and 92530 transitions. Word has length 216 [2018-11-07 17:59:11,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:59:11,514 INFO L480 AbstractCegarLoop]: Abstraction has 68123 states and 92530 transitions. [2018-11-07 17:59:11,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:59:11,514 INFO L276 IsEmpty]: Start isEmpty. Operand 68123 states and 92530 transitions. [2018-11-07 17:59:11,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-07 17:59:11,521 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:59:11,523 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:59:11,524 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:59:11,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:59:11,524 INFO L82 PathProgramCache]: Analyzing trace with hash -967021314, now seen corresponding path program 1 times [2018-11-07 17:59:11,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:59:11,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:59:11,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:59:11,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:59:11,525 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:59:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:59:11,891 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:59:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:59:12,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:59:12,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:59:12,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:59:12,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:59:12,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:59:12,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:59:12,089 INFO L87 Difference]: Start difference. First operand 68123 states and 92530 transitions. Second operand 6 states. [2018-11-07 17:59:23,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:59:23,256 INFO L93 Difference]: Finished difference Result 177107 states and 267081 transitions. [2018-11-07 17:59:23,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:59:23,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 224 [2018-11-07 17:59:23,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:59:23,635 INFO L225 Difference]: With dead ends: 177107 [2018-11-07 17:59:23,635 INFO L226 Difference]: Without dead ends: 108990 [2018-11-07 17:59:23,792 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 17:59:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108990 states. [2018-11-07 17:59:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108990 to 108665. [2018-11-07 17:59:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108665 states. [2018-11-07 17:59:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108665 states to 108665 states and 149182 transitions. [2018-11-07 17:59:26,414 INFO L78 Accepts]: Start accepts. Automaton has 108665 states and 149182 transitions. Word has length 224 [2018-11-07 17:59:26,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:59:26,414 INFO L480 AbstractCegarLoop]: Abstraction has 108665 states and 149182 transitions. [2018-11-07 17:59:26,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:59:26,414 INFO L276 IsEmpty]: Start isEmpty. Operand 108665 states and 149182 transitions. [2018-11-07 17:59:26,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-11-07 17:59:26,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:59:26,424 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 17:59:26,424 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:59:26,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:59:26,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1811019067, now seen corresponding path program 1 times [2018-11-07 17:59:26,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:59:26,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:59:26,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:59:26,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:59:26,426 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:59:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:59:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-11-07 17:59:26,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:59:26,618 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:59:26,619 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 249 with the following transitions: [2018-11-07 17:59:26,621 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2639], [2641], [2644], [2652], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [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], [3320], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 17:59:26,685 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:59:26,686 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:59:27,528 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:59:27,530 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 17:59:27,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:59:27,584 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:59:28,529 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 70.85% of their original sizes. [2018-11-07 17:59:28,529 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:59:29,006 INFO L415 sIntCurrentIteration]: We unified 247 AI predicates to 247 [2018-11-07 17:59:29,006 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:59:29,007 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:59:29,007 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [3] total 12 [2018-11-07 17:59:29,007 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:59:29,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 17:59:29,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 17:59:29,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:59:29,009 INFO L87 Difference]: Start difference. First operand 108665 states and 149182 transitions. Second operand 11 states. [2018-11-07 17:59:45,569 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 18:01:04,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 18:01:04,457 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:01:04,463 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:01:04,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:01:04 BoogieIcfgContainer [2018-11-07 18:01:04,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:01:04,465 INFO L168 Benchmark]: Toolchain (without parser) took 209291.19 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 895.7 MB in the end (delta: 515.1 MB). Peak memory consumption was 4.1 GB. Max. memory is 7.1 GB. [2018-11-07 18:01:04,466 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:01:04,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2406.62 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 18:01:04,468 INFO L168 Benchmark]: Boogie Procedure Inliner took 355.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.4 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 67.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:01:04,469 INFO L168 Benchmark]: Boogie Preprocessor took 298.28 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: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:01:04,470 INFO L168 Benchmark]: RCFGBuilder took 10159.44 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 157.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 44.7 MB). Peak memory consumption was 661.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:01:04,471 INFO L168 Benchmark]: TraceAbstraction took 196065.02 ms. Allocated memory was 2.5 GB in the beginning and 5.1 GB in the end (delta: 2.6 GB). Free memory was 2.2 GB in the beginning and 895.7 MB in the end (delta: 1.3 GB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. [2018-11-07 18:01:04,483 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2406.62 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 355.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 807.4 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 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 298.28 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: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10159.44 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 157.8 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 44.7 MB). Peak memory consumption was 661.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 196065.02 ms. Allocated memory was 2.5 GB in the beginning and 5.1 GB in the end (delta: 2.6 GB). Free memory was 2.2 GB in the beginning and 895.7 MB in the end (delta: 1.3 GB). Peak memory consumption was 3.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 33]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 33). Cancelled while BasicCegarLoop was constructing difference of abstraction (108665states) and FLOYD_HOARE automaton (currently 11 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (178469 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 195.9s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 183.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6633 SDtfs, 25990 SDslu, 4620 SDs, 0 SdLazy, 46679 SolverSat, 11450 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 107.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 313 GetRequests, 260 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108665occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9980850575816252 AbsIntWeakeningRatio, 0.1214574898785425 AbsIntAvgWeakeningVarsNumRemoved, 0.7044534412955465 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 1733 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1244 NumberOfCodeBlocks, 1244 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1235 ConstructedInterpolants, 0 QuantifiedInterpolants, 705918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 275/277 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown