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/Problem12_label42_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 17:50:49,238 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 17:50:49,240 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 17:50:49,253 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 17:50:49,253 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 17:50:49,254 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 17:50:49,255 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 17:50:49,257 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 17:50:49,259 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 17:50:49,260 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 17:50:49,261 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 17:50:49,261 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 17:50:49,262 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 17:50:49,263 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 17:50:49,264 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 17:50:49,268 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 17:50:49,268 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 17:50:49,270 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 17:50:49,272 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 17:50:49,274 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 17:50:49,275 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 17:50:49,277 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 17:50:49,279 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 17:50:49,279 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 17:50:49,280 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 17:50:49,280 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 17:50:49,281 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 17:50:49,282 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 17:50:49,285 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 17:50:49,287 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 17:50:49,287 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 17:50:49,288 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 17:50:49,289 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 17:50:49,289 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 17:50:49,290 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 17:50:49,291 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 17:50:49,291 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 17:50:49,307 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 17:50:49,307 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 17:50:49,308 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 17:50:49,308 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 17:50:49,308 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 17:50:49,309 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 17:50:49,309 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 17:50:49,309 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 17:50:49,309 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 17:50:49,309 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 17:50:49,310 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 17:50:49,310 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 17:50:49,310 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 17:50:49,311 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 17:50:49,311 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 17:50:49,311 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 17:50:49,311 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 17:50:49,312 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 17:50:49,312 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 17:50:49,312 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 17:50:49,312 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 17:50:49,312 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 17:50:49,313 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 17:50:49,313 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 17:50:49,313 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 17:50:49,313 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:50:49,313 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 17:50:49,314 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 17:50:49,314 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 17:50:49,314 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 17:50:49,314 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 17:50:49,314 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 17:50:49,315 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 17:50:49,315 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 17:50:49,315 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 17:50:49,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 17:50:49,375 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 17:50:49,380 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 17:50:49,382 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 17:50:49,382 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 17:50:49,383 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label42_false-unreach-call.c [2018-11-07 17:50:49,451 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f0a53fc/35c65176504646ddb34779bed2ae78d2/FLAG7418d18e0 [2018-11-07 17:50:50,188 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 17:50:50,189 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label42_false-unreach-call.c [2018-11-07 17:50:50,216 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f0a53fc/35c65176504646ddb34779bed2ae78d2/FLAG7418d18e0 [2018-11-07 17:50:50,236 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f0a53fc/35c65176504646ddb34779bed2ae78d2 [2018-11-07 17:50:50,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 17:50:50,252 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 17:50:50,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 17:50:50,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 17:50:50,260 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 17:50:50,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:50:50" (1/1) ... [2018-11-07 17:50:50,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:50, skipping insertion in model container [2018-11-07 17:50:50,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:50:50" (1/1) ... [2018-11-07 17:50:50,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 17:50:50,425 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 17:50:51,822 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:50:51,829 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 17:50:52,434 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:50:52,471 INFO L193 MainTranslator]: Completed translation [2018-11-07 17:50:52,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52 WrapperNode [2018-11-07 17:50:52,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 17:50:52,473 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 17:50:52,473 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 17:50:52,473 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 17:50:52,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (1/1) ... [2018-11-07 17:50:52,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (1/1) ... [2018-11-07 17:50:52,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 17:50:52,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 17:50:52,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 17:50:52,817 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 17:50:52,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (1/1) ... [2018-11-07 17:50:52,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (1/1) ... [2018-11-07 17:50:52,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (1/1) ... [2018-11-07 17:50:52,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (1/1) ... [2018-11-07 17:50:52,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (1/1) ... [2018-11-07 17:50:53,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (1/1) ... [2018-11-07 17:50:53,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (1/1) ... [2018-11-07 17:50:53,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 17:50:53,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 17:50:53,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 17:50:53,071 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 17:50:53,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (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 17:50:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 17:50:53,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 17:50:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 17:50:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 17:50:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 17:50:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 17:50:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 17:50:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 17:50:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 17:50:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 17:50:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 17:50:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 17:50:53,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 17:50:53,132 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 17:50:53,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 17:51:02,033 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 17:51:02,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:51:02 BoogieIcfgContainer [2018-11-07 17:51:02,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 17:51:02,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 17:51:02,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 17:51:02,038 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 17:51:02,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:50:50" (1/3) ... [2018-11-07 17:51:02,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5a07f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:51:02, skipping insertion in model container [2018-11-07 17:51:02,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:50:52" (2/3) ... [2018-11-07 17:51:02,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5a07f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:51:02, skipping insertion in model container [2018-11-07 17:51:02,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:51:02" (3/3) ... [2018-11-07 17:51:02,042 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label42_false-unreach-call.c [2018-11-07 17:51:02,052 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 17:51:02,063 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 17:51:02,081 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 17:51:02,127 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 17:51:02,127 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 17:51:02,127 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 17:51:02,128 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 17:51:02,128 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 17:51:02,128 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 17:51:02,128 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 17:51:02,128 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 17:51:02,169 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 17:51:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-07 17:51:02,177 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:51:02,179 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] [2018-11-07 17:51:02,181 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:51:02,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:51:02,189 INFO L82 PathProgramCache]: Analyzing trace with hash -206959357, now seen corresponding path program 1 times [2018-11-07 17:51:02,194 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:51:02,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:51:02,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:51:02,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:51:02,253 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:51:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:51:02,658 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 17:51:02,663 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:51:02,663 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:51:02,663 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:51:02,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:51:02,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:51:02,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:51:02,719 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-07 17:51:14,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:51:14,872 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-07 17:51:14,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:51:14,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-07 17:51:14,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:51:14,935 INFO L225 Difference]: With dead ends: 3234 [2018-11-07 17:51:14,935 INFO L226 Difference]: Without dead ends: 2388 [2018-11-07 17:51:14,947 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 17:51:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-07 17:51:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-11-07 17:51:15,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-11-07 17:51:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-11-07 17:51:15,134 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 33 [2018-11-07 17:51:15,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:51:15,135 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-11-07 17:51:15,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:51:15,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-11-07 17:51:15,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 17:51:15,142 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:51:15,143 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:15,143 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:51:15,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:51:15,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1266626407, now seen corresponding path program 1 times [2018-11-07 17:51:15,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:51:15,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:51:15,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:51:15,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:51:15,146 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:51:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:51:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:51:15,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:51:15,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:51:15,534 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:51:15,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:51:15,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:51:15,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:51:15,542 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 6 states. [2018-11-07 17:51:29,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:51:29,297 INFO L93 Difference]: Finished difference Result 9463 states and 15573 transitions. [2018-11-07 17:51:29,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:51:29,297 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-11-07 17:51:29,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:51:29,344 INFO L225 Difference]: With dead ends: 9463 [2018-11-07 17:51:29,344 INFO L226 Difference]: Without dead ends: 7081 [2018-11-07 17:51:29,357 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 17:51:29,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7081 states. [2018-11-07 17:51:29,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7081 to 7037. [2018-11-07 17:51:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7037 states. [2018-11-07 17:51:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7037 states to 7037 states and 10229 transitions. [2018-11-07 17:51:29,570 INFO L78 Accepts]: Start accepts. Automaton has 7037 states and 10229 transitions. Word has length 114 [2018-11-07 17:51:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:51:29,571 INFO L480 AbstractCegarLoop]: Abstraction has 7037 states and 10229 transitions. [2018-11-07 17:51:29,571 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:51:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 7037 states and 10229 transitions. [2018-11-07 17:51:29,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 17:51:29,589 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:51:29,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:29,590 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:51:29,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:51:29,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1753618293, now seen corresponding path program 1 times [2018-11-07 17:51:29,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:51:29,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:51:29,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:51:29,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:51:29,593 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:51:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:51:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:51:29,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:51:29,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:51:29,870 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:51:29,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:51:29,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:51:29,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:51:29,871 INFO L87 Difference]: Start difference. First operand 7037 states and 10229 transitions. Second operand 6 states. [2018-11-07 17:51:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:51:36,731 INFO L93 Difference]: Finished difference Result 19057 states and 29212 transitions. [2018-11-07 17:51:36,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:51:36,732 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-11-07 17:51:36,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:51:36,797 INFO L225 Difference]: With dead ends: 19057 [2018-11-07 17:51:36,797 INFO L226 Difference]: Without dead ends: 12026 [2018-11-07 17:51:36,820 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 17:51:36,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12026 states. [2018-11-07 17:51:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12026 to 11931. [2018-11-07 17:51:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11931 states. [2018-11-07 17:51:37,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11931 states to 11931 states and 17450 transitions. [2018-11-07 17:51:37,163 INFO L78 Accepts]: Start accepts. Automaton has 11931 states and 17450 transitions. Word has length 144 [2018-11-07 17:51:37,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:51:37,164 INFO L480 AbstractCegarLoop]: Abstraction has 11931 states and 17450 transitions. [2018-11-07 17:51:37,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:51:37,164 INFO L276 IsEmpty]: Start isEmpty. Operand 11931 states and 17450 transitions. [2018-11-07 17:51:37,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 17:51:37,169 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:51:37,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:37,172 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:51:37,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:51:37,173 INFO L82 PathProgramCache]: Analyzing trace with hash -988321524, now seen corresponding path program 1 times [2018-11-07 17:51:37,173 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:51:37,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:51:37,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:51:37,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:51:37,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:51:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:51:37,436 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:51:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:51:37,850 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:51:37,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 17:51:37,851 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:51:37,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 17:51:37,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 17:51:37,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 17:51:37,852 INFO L87 Difference]: Start difference. First operand 11931 states and 17450 transitions. Second operand 6 states. [2018-11-07 17:51:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:51:49,251 INFO L93 Difference]: Finished difference Result 37661 states and 58072 transitions. [2018-11-07 17:51:49,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 17:51:49,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-11-07 17:51:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:51:49,386 INFO L225 Difference]: With dead ends: 37661 [2018-11-07 17:51:49,386 INFO L226 Difference]: Without dead ends: 25736 [2018-11-07 17:51:49,450 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 17:51:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25736 states. [2018-11-07 17:51:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25736 to 25635. [2018-11-07 17:51:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25635 states. [2018-11-07 17:51:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25635 states to 25635 states and 38010 transitions. [2018-11-07 17:51:50,074 INFO L78 Accepts]: Start accepts. Automaton has 25635 states and 38010 transitions. Word has length 147 [2018-11-07 17:51:50,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:51:50,075 INFO L480 AbstractCegarLoop]: Abstraction has 25635 states and 38010 transitions. [2018-11-07 17:51:50,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 17:51:50,075 INFO L276 IsEmpty]: Start isEmpty. Operand 25635 states and 38010 transitions. [2018-11-07 17:51:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-07 17:51:50,081 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:51:50,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:51:50,082 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:51:50,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:51:50,083 INFO L82 PathProgramCache]: Analyzing trace with hash 649593825, now seen corresponding path program 1 times [2018-11-07 17:51:50,083 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:51:50,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:51:50,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:51:50,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:51:50,084 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:51:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:51:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 17:51:50,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:51:50,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:51:50,507 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:51:50,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:51:50,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:51:50,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:51:50,511 INFO L87 Difference]: Start difference. First operand 25635 states and 38010 transitions. Second operand 4 states. [2018-11-07 17:51:59,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:51:59,283 INFO L93 Difference]: Finished difference Result 76817 states and 117652 transitions. [2018-11-07 17:51:59,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:51:59,284 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2018-11-07 17:51:59,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:51:59,507 INFO L225 Difference]: With dead ends: 76817 [2018-11-07 17:51:59,507 INFO L226 Difference]: Without dead ends: 51188 [2018-11-07 17:51:59,602 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 17:51:59,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51188 states. [2018-11-07 17:52:00,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51188 to 51178. [2018-11-07 17:52:00,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51178 states. [2018-11-07 17:52:00,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51178 states to 51178 states and 71067 transitions. [2018-11-07 17:52:00,953 INFO L78 Accepts]: Start accepts. Automaton has 51178 states and 71067 transitions. Word has length 182 [2018-11-07 17:52:00,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:52:00,953 INFO L480 AbstractCegarLoop]: Abstraction has 51178 states and 71067 transitions. [2018-11-07 17:52:00,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:52:00,954 INFO L276 IsEmpty]: Start isEmpty. Operand 51178 states and 71067 transitions. [2018-11-07 17:52:00,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-11-07 17:52:00,978 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:52:00,978 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:52:00,978 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:52:00,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:52:00,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1136426607, now seen corresponding path program 1 times [2018-11-07 17:52:00,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:52:00,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:52:00,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:52:00,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:52:00,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:52:01,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:52:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 52 proven. 100 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 17:52:01,348 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:52:01,348 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:52:01,349 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-11-07 17:52:01,352 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2031], [2033], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2500], [2501], [2505], [2509], [2513], [2517], [2521], [2524], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:52:01,432 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:52:01,432 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:52:02,072 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:52:02,074 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 17:52:02,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:52:02,116 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:52:02,717 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 75.19% of their original sizes. [2018-11-07 17:52:02,717 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:52:03,217 INFO L415 sIntCurrentIteration]: We unified 248 AI predicates to 248 [2018-11-07 17:52:03,217 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:52:03,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:52:03,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 17:52:03,220 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:52:03,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 17:52:03,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 17:52:03,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 17:52:03,221 INFO L87 Difference]: Start difference. First operand 51178 states and 71067 transitions. Second operand 8 states. [2018-11-07 17:52:11,442 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:52:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:52:53,947 INFO L93 Difference]: Finished difference Result 103120 states and 143113 transitions. [2018-11-07 17:52:53,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 17:52:53,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2018-11-07 17:52:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:52:54,113 INFO L225 Difference]: With dead ends: 103120 [2018-11-07 17:52:54,113 INFO L226 Difference]: Without dead ends: 51948 [2018-11-07 17:52:54,199 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 250 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 17:52:54,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51948 states. [2018-11-07 17:52:54,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51948 to 51946. [2018-11-07 17:52:54,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51946 states. [2018-11-07 17:52:55,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51946 states to 51946 states and 71851 transitions. [2018-11-07 17:52:55,038 INFO L78 Accepts]: Start accepts. Automaton has 51946 states and 71851 transitions. Word has length 249 [2018-11-07 17:52:55,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:52:55,039 INFO L480 AbstractCegarLoop]: Abstraction has 51946 states and 71851 transitions. [2018-11-07 17:52:55,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 17:52:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 51946 states and 71851 transitions. [2018-11-07 17:52:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-11-07 17:52:55,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:52:55,065 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:52:55,065 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:52:55,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:52:55,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1580260336, now seen corresponding path program 1 times [2018-11-07 17:52:55,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:52:55,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:52:55,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:52:55,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:52:55,067 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:52:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:52:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 84 proven. 222 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-07 17:52:56,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:52:56,795 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:52:56,795 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-11-07 17:52:56,795 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2031], [2033], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2428], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2524], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:52:56,811 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:52:56,812 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:52:57,109 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:52:57,110 INFO L272 AbstractInterpreter]: Visited 120 different actions 236 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:52:57,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:52:57,117 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:52:57,585 INFO L227 lantSequenceWeakener]: Weakened 304 states. On average, predicates are now at 75.22% of their original sizes. [2018-11-07 17:52:57,586 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:52:57,923 INFO L415 sIntCurrentIteration]: We unified 306 AI predicates to 306 [2018-11-07 17:52:57,924 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:52:57,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:52:57,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 17:52:57,924 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:52:57,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 17:52:57,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 17:52:57,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:52:57,925 INFO L87 Difference]: Start difference. First operand 51946 states and 71851 transitions. Second operand 11 states. [2018-11-07 17:53:00,841 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:53:31,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:53:31,733 INFO L93 Difference]: Finished difference Result 104660 states and 144975 transitions. [2018-11-07 17:53:31,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 17:53:31,733 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 307 [2018-11-07 17:53:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:53:31,912 INFO L225 Difference]: With dead ends: 104660 [2018-11-07 17:53:31,912 INFO L226 Difference]: Without dead ends: 51948 [2018-11-07 17:53:31,981 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 315 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 17:53:32,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51948 states. [2018-11-07 17:53:32,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51948 to 51946. [2018-11-07 17:53:32,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51946 states. [2018-11-07 17:53:32,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51946 states to 51946 states and 71849 transitions. [2018-11-07 17:53:32,719 INFO L78 Accepts]: Start accepts. Automaton has 51946 states and 71849 transitions. Word has length 307 [2018-11-07 17:53:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:53:32,719 INFO L480 AbstractCegarLoop]: Abstraction has 51946 states and 71849 transitions. [2018-11-07 17:53:32,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 17:53:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 51946 states and 71849 transitions. [2018-11-07 17:53:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-07 17:53:32,745 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:53:32,746 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:53:32,746 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:53:32,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:53:32,746 INFO L82 PathProgramCache]: Analyzing trace with hash -68307925, now seen corresponding path program 1 times [2018-11-07 17:53:32,746 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:53:32,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:53:32,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:53:32,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:53:32,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:53:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:53:33,455 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 84 proven. 250 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-07 17:53:33,455 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:53:33,455 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:53:33,456 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 369 with the following transitions: [2018-11-07 17:53:33,457 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2031], [2033], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2392], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2524], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:53:33,464 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:53:33,466 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:53:33,590 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:53:33,756 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:53:33,757 INFO L272 AbstractInterpreter]: Visited 155 different actions 304 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:53:33,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:53:33,763 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:53:34,369 INFO L227 lantSequenceWeakener]: Weakened 38 states. On average, predicates are now at 77.57% of their original sizes. [2018-11-07 17:53:34,369 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:53:36,109 INFO L415 sIntCurrentIteration]: We unified 367 AI predicates to 367 [2018-11-07 17:53:36,110 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:53:36,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:53:36,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 17:53:36,110 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:53:36,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 17:53:36,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 17:53:36,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-07 17:53:36,112 INFO L87 Difference]: Start difference. First operand 51946 states and 71849 transitions. Second operand 20 states. Received shutdown request... [2018-11-07 17:54:23,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 17:54:23,255 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 17:54:23,260 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 17:54:23,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:54:23 BoogieIcfgContainer [2018-11-07 17:54:23,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 17:54:23,261 INFO L168 Benchmark]: Toolchain (without parser) took 213010.66 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -705.0 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 17:54:23,262 INFO L168 Benchmark]: CDTParser took 0.22 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 17:54:23,263 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2219.65 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 17:54:23,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 343.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-07 17:54:23,264 INFO L168 Benchmark]: Boogie Preprocessor took 253.78 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2018-11-07 17:54:23,265 INFO L168 Benchmark]: RCFGBuilder took 8963.39 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 167.8 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -174.7 MB). Peak memory consumption was 676.3 MB. Max. memory is 7.1 GB. [2018-11-07 17:54:23,266 INFO L168 Benchmark]: TraceAbstraction took 201225.56 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 286.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 17:54:23,271 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 2219.65 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 343.14 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 253.78 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8963.39 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 167.8 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -174.7 MB). Peak memory consumption was 676.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201225.56 ms. Allocated memory was 2.5 GB in the beginning and 4.7 GB in the end (delta: 2.2 GB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 286.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 90). Cancelled while BasicCegarLoop was constructing difference of abstraction (51946states) and FLOYD_HOARE automaton (currently 18 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (28590 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 201.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 185.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4114 SDtfs, 21653 SDslu, 1854 SDs, 0 SdLazy, 44562 SolverSat, 7866 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 983 GetRequests, 852 SyntacticMatches, 52 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51946occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.3s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.997448361250231 AbsIntWeakeningRatio, 0.10097719869706841 AbsIntAvgWeakeningVarsNumRemoved, 19.504885993485342 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 254 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 1544 NumberOfCodeBlocks, 1544 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1536 ConstructedInterpolants, 0 QuantifiedInterpolants, 1146640 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 351/923 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown