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/Problem19_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:05:31,091 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:05:31,093 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:05:31,106 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:05:31,107 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:05:31,108 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:05:31,110 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:05:31,111 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:05:31,113 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:05:31,114 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:05:31,115 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:05:31,115 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:05:31,116 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:05:31,117 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:05:31,120 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:05:31,121 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:05:31,122 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:05:31,125 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:05:31,133 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:05:31,135 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:05:31,139 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:05:31,140 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:05:31,143 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:05:31,143 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:05:31,143 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:05:31,147 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:05:31,148 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:05:31,151 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:05:31,153 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:05:31,156 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:05:31,156 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:05:31,158 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 17:05:31,161 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 [2018-11-12 17:05:31,190 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:05:31,191 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:05:31,192 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:05:31,192 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:05:31,192 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:05:31,192 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:05:31,192 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:05:31,193 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:05:31,193 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:05:31,194 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:05:31,194 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:05:31,194 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:05:31,194 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:05:31,195 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:05:31,195 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:05:31,195 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:05:31,195 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:05:31,196 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:05:31,196 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:05:31,196 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:05:31,196 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:05:31,196 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:05:31,197 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:05:31,197 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:05:31,197 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:05:31,197 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:05:31,197 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:05:31,199 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:05:31,199 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:05:31,199 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:05:31,199 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:05:31,199 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:05:31,200 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:05:31,200 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:05:31,200 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:05:31,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:05:31,287 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:05:31,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:05:31,294 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:05:31,294 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:05:31,295 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c [2018-11-12 17:05:31,357 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3782ee741/72357b7c31ac4ec8b305e7bf4bc3154e/FLAG245b511e2 [2018-11-12 17:05:32,247 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:05:32,248 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c [2018-11-12 17:05:32,291 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3782ee741/72357b7c31ac4ec8b305e7bf4bc3154e/FLAG245b511e2 [2018-11-12 17:05:32,306 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3782ee741/72357b7c31ac4ec8b305e7bf4bc3154e [2018-11-12 17:05:32,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:05:32,321 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:05:32,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:05:32,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:05:32,326 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:05:32,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:05:32" (1/1) ... [2018-11-12 17:05:32,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e6a182c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:32, skipping insertion in model container [2018-11-12 17:05:32,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:05:32" (1/1) ... [2018-11-12 17:05:32,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:05:32,608 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:05:34,575 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:05:34,581 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:05:35,685 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:05:35,738 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:05:35,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35 WrapperNode [2018-11-12 17:05:35,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:05:35,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:05:35,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:05:35,740 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:05:36,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (1/1) ... [2018-11-12 17:05:36,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (1/1) ... [2018-11-12 17:05:36,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:05:36,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:05:36,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:05:36,258 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:05:36,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (1/1) ... [2018-11-12 17:05:36,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (1/1) ... [2018-11-12 17:05:36,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (1/1) ... [2018-11-12 17:05:36,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (1/1) ... [2018-11-12 17:05:36,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (1/1) ... [2018-11-12 17:05:36,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (1/1) ... [2018-11-12 17:05:36,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (1/1) ... [2018-11-12 17:05:36,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:05:36,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:05:36,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:05:36,661 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:05:36,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (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 [2018-11-12 17:05:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:05:36,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:05:36,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:05:36,736 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-12 17:05:36,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-12 17:05:36,736 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-12 17:05:36,736 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-12 17:05:36,736 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 17:05:36,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 17:05:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 17:05:36,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 17:05:36,737 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 17:05:36,737 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 17:05:36,738 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:05:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:05:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:05:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:05:36,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:05:36,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:05:52,419 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:05:52,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:05:52 BoogieIcfgContainer [2018-11-12 17:05:52,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:05:52,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:05:52,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:05:52,424 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:05:52,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:05:32" (1/3) ... [2018-11-12 17:05:52,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35aecdfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:05:52, skipping insertion in model container [2018-11-12 17:05:52,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:05:35" (2/3) ... [2018-11-12 17:05:52,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35aecdfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:05:52, skipping insertion in model container [2018-11-12 17:05:52,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:05:52" (3/3) ... [2018-11-12 17:05:52,428 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label58_false-unreach-call.c [2018-11-12 17:05:52,437 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:05:52,448 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:05:52,467 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:05:52,519 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:05:52,520 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:05:52,520 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:05:52,520 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:05:52,520 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:05:52,520 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:05:52,520 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:05:52,520 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:05:52,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-12 17:05:52,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-12 17:05:52,599 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:05:52,600 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] [2018-11-12 17:05:52,603 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:05:52,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:05:52,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1840290404, now seen corresponding path program 1 times [2018-11-12 17:05:52,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:05:52,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:52,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:05:52,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:52,668 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:05:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:05:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:05:53,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:05:53,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 17:05:53,062 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:05:53,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 17:05:53,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 17:05:53,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:05:53,089 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-12 17:06:14,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:06:14,697 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-11-12 17:06:14,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 17:06:14,699 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-12 17:06:14,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:06:14,749 INFO L225 Difference]: With dead ends: 6513 [2018-11-12 17:06:14,750 INFO L226 Difference]: Without dead ends: 4729 [2018-11-12 17:06:14,764 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 [2018-11-12 17:06:14,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-11-12 17:06:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-11-12 17:06:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-12 17:06:15,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-11-12 17:06:15,010 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 20 [2018-11-12 17:06:15,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:06:15,011 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-11-12 17:06:15,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 17:06:15,011 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-11-12 17:06:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-12 17:06:15,017 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:06:15,018 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:06:15,018 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:06:15,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:06:15,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1215912625, now seen corresponding path program 1 times [2018-11-12 17:06:15,019 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:06:15,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:15,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:06:15,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:15,021 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:06:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:06:15,371 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:06:15,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:06:15,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:06:15,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:06:15,757 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:06:15,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:06:15,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:06:15,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:06:15,763 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-11-12 17:06:39,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:06:39,489 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-11-12 17:06:39,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:06:39,489 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-11-12 17:06:39,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:06:39,560 INFO L225 Difference]: With dead ends: 17886 [2018-11-12 17:06:39,560 INFO L226 Difference]: Without dead ends: 13199 [2018-11-12 17:06:39,582 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:06:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-11-12 17:06:39,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-11-12 17:06:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-11-12 17:06:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-11-12 17:06:39,939 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 92 [2018-11-12 17:06:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:06:39,940 INFO L480 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-11-12 17:06:39,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:06:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-11-12 17:06:39,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-12 17:06:39,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:06:39,945 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:06:39,946 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:06:39,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:06:39,946 INFO L82 PathProgramCache]: Analyzing trace with hash 489135727, now seen corresponding path program 1 times [2018-11-12 17:06:39,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:06:39,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:39,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:06:39,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:39,948 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:06:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:06:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:06:40,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:06:40,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:06:40,456 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:06:40,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:06:40,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:06:40,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:06:40,461 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-11-12 17:06:57,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:06:57,884 INFO L93 Difference]: Finished difference Result 39933 states and 60297 transitions. [2018-11-12 17:06:57,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 17:06:57,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-11-12 17:06:57,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:06:58,005 INFO L225 Difference]: With dead ends: 39933 [2018-11-12 17:06:58,006 INFO L226 Difference]: Without dead ends: 26809 [2018-11-12 17:06:58,049 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:06:58,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26809 states. [2018-11-12 17:06:58,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26809 to 26540. [2018-11-12 17:06:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26540 states. [2018-11-12 17:06:58,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26540 states to 26540 states and 38640 transitions. [2018-11-12 17:06:58,666 INFO L78 Accepts]: Start accepts. Automaton has 26540 states and 38640 transitions. Word has length 102 [2018-11-12 17:06:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:06:58,667 INFO L480 AbstractCegarLoop]: Abstraction has 26540 states and 38640 transitions. [2018-11-12 17:06:58,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:06:58,667 INFO L276 IsEmpty]: Start isEmpty. Operand 26540 states and 38640 transitions. [2018-11-12 17:06:58,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-12 17:06:58,678 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:06:58,678 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:06:58,679 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:06:58,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:06:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1440473089, now seen corresponding path program 1 times [2018-11-12 17:06:58,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:06:58,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:58,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:06:58,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:58,682 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:06:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:06:59,031 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:06:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:06:59,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:06:59,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:06:59,445 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:06:59,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:06:59,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:06:59,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:06:59,446 INFO L87 Difference]: Start difference. First operand 26540 states and 38640 transitions. Second operand 6 states. [2018-11-12 17:07:18,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:07:18,972 INFO L93 Difference]: Finished difference Result 70544 states and 106710 transitions. [2018-11-12 17:07:18,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:07:18,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-11-12 17:07:18,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:07:19,111 INFO L225 Difference]: With dead ends: 70544 [2018-11-12 17:07:19,111 INFO L226 Difference]: Without dead ends: 44010 [2018-11-12 17:07:19,174 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:07:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44010 states. [2018-11-12 17:07:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44010 to 43859. [2018-11-12 17:07:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43859 states. [2018-11-12 17:07:19,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43859 states to 43859 states and 61094 transitions. [2018-11-12 17:07:19,984 INFO L78 Accepts]: Start accepts. Automaton has 43859 states and 61094 transitions. Word has length 135 [2018-11-12 17:07:19,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:07:19,985 INFO L480 AbstractCegarLoop]: Abstraction has 43859 states and 61094 transitions. [2018-11-12 17:07:19,985 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:07:19,985 INFO L276 IsEmpty]: Start isEmpty. Operand 43859 states and 61094 transitions. [2018-11-12 17:07:19,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-12 17:07:19,989 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:07:19,989 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:07:19,990 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:07:19,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:07:19,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1419206454, now seen corresponding path program 1 times [2018-11-12 17:07:19,990 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:07:19,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:07:19,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:07:19,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:07:19,993 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:07:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:07:20,273 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:07:20,697 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:07:20,698 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:07:20,698 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:07:20,699 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-11-12 17:07:20,707 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5286], [5288], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-12 17:07:20,761 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:07:20,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:07:21,246 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:07:21,248 INFO L272 AbstractInterpreter]: Visited 84 different actions 84 times. Never merged. Never widened. Performed 747 root evaluator evaluations with a maximum evaluation depth of 3. Performed 747 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 17:07:21,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:07:21,290 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:07:21,749 INFO L227 lantSequenceWeakener]: Weakened 160 states. On average, predicates are now at 74.94% of their original sizes. [2018-11-12 17:07:21,749 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:07:22,107 INFO L415 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2018-11-12 17:07:22,107 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:07:22,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:07:22,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-12 17:07:22,109 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:07:22,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 17:07:22,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 17:07:22,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 17:07:22,112 INFO L87 Difference]: Start difference. First operand 43859 states and 61094 transitions. Second operand 7 states. [2018-11-12 17:07:27,880 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 17:08:58,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:08:58,508 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:08:58,513 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:08:58,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:08:58 BoogieIcfgContainer [2018-11-12 17:08:58,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:08:58,514 INFO L168 Benchmark]: Toolchain (without parser) took 206194.81 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.1 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-12 17:08:58,515 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-11-12 17:08:58,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3417.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 380.5 MB). Peak memory consumption was 380.5 MB. Max. memory is 7.1 GB. [2018-11-12 17:08:58,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 518.05 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 862.5 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-12 17:08:58,518 INFO L168 Benchmark]: Boogie Preprocessor took 402.07 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2018-11-12 17:08:58,519 INFO L168 Benchmark]: RCFGBuilder took 15759.26 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 139.5 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 531.2 MB). Peak memory consumption was 670.7 MB. Max. memory is 7.1 GB. [2018-11-12 17:08:58,520 INFO L168 Benchmark]: TraceAbstraction took 186092.88 ms. Allocated memory was 2.5 GB in the beginning and 5.7 GB in the end (delta: 3.1 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-12 17:08:58,525 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 3417.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 380.5 MB). Peak memory consumption was 380.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 518.05 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 862.5 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 402.07 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15759.26 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 139.5 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 531.2 MB). Peak memory consumption was 670.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 186092.88 ms. Allocated memory was 2.5 GB in the beginning and 5.7 GB in the end (delta: 3.1 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 55). Cancelled while BasicCegarLoop was constructing difference of abstraction (43859states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (86136 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 186.0s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 179.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4905 SDtfs, 27150 SDslu, 4008 SDs, 0 SdLazy, 48440 SolverSat, 9814 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 102.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 208 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43859occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9972177013097732 AbsIntWeakeningRatio, 0.16470588235294117 AbsIntAvgWeakeningVarsNumRemoved, 18.50588235294118 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 525 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 520 NumberOfCodeBlocks, 520 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 515 ConstructedInterpolants, 0 QuantifiedInterpolants, 300495 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 70/135 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown