java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:34:22,162 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:34:22,164 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:34:22,178 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:34:22,178 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:34:22,179 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:34:22,181 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:34:22,182 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:34:22,184 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:34:22,185 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:34:22,186 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:34:22,186 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:34:22,187 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:34:22,188 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:34:22,190 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:34:22,190 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:34:22,191 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:34:22,193 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:34:22,195 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:34:22,197 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:34:22,198 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:34:22,199 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:34:22,202 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:34:22,208 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:34:22,208 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:34:22,209 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:34:22,210 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:34:22,210 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:34:22,234 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:34:22,235 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:34:22,236 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:34:22,236 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:34:22,236 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:34:22,236 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:34:22,237 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:34:22,237 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:34:22,237 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:34:22,238 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:34:22,238 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:34:22,238 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:34:22,239 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:34:22,239 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:34:22,239 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:34:22,239 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:34:22,240 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:34:22,241 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:34:22,241 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:34:22,241 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:34:22,241 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:34:22,242 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:34:22,242 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:34:22,242 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:34:22,242 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:34:22,242 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:34:22,243 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:34:22,243 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:34:22,243 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:34:22,244 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:34:22,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:34:22,244 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:34:22,244 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:34:22,244 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:34:22,304 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:34:22,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:34:22,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:34:22,328 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:34:22,329 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:34:22,330 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-10-24 21:34:22,405 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0fdb79cda/e38622cae1ad45749ad055bd793c4d9d/FLAG0a51356c3 [2018-10-24 21:34:23,271 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:34:23,273 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-10-24 21:34:23,314 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0fdb79cda/e38622cae1ad45749ad055bd793c4d9d/FLAG0a51356c3 [2018-10-24 21:34:23,332 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0fdb79cda/e38622cae1ad45749ad055bd793c4d9d [2018-10-24 21:34:23,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:34:23,348 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:34:23,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:34:23,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:34:23,353 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:34:23,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:34:23" (1/1) ... [2018-10-24 21:34:23,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708c2c8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:23, skipping insertion in model container [2018-10-24 21:34:23,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:34:23" (1/1) ... [2018-10-24 21:34:23,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:34:23,541 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:34:24,983 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:34:24,988 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:34:25,796 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:34:25,842 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:34:25,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25 WrapperNode [2018-10-24 21:34:25,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:34:25,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:34:25,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:34:25,845 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:34:25,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (1/1) ... [2018-10-24 21:34:25,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (1/1) ... [2018-10-24 21:34:26,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:34:26,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:34:26,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:34:26,483 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:34:26,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (1/1) ... [2018-10-24 21:34:26,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (1/1) ... [2018-10-24 21:34:26,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (1/1) ... [2018-10-24 21:34:26,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (1/1) ... [2018-10-24 21:34:26,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (1/1) ... [2018-10-24 21:34:26,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (1/1) ... [2018-10-24 21:34:26,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (1/1) ... [2018-10-24 21:34:26,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:34:26,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:34:26,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:34:26,827 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:34:26,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:34:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:34:26,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:34:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:34:26,909 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:34:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:34:26,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:34:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:34:26,910 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:34:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:34:26,911 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:34:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:34:26,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:34:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:34:26,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:34:38,673 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:34:38,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:34:38 BoogieIcfgContainer [2018-10-24 21:34:38,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:34:38,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:34:38,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:34:38,678 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:34:38,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:34:23" (1/3) ... [2018-10-24 21:34:38,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7995a07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:34:38, skipping insertion in model container [2018-10-24 21:34:38,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:34:25" (2/3) ... [2018-10-24 21:34:38,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7995a07a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:34:38, skipping insertion in model container [2018-10-24 21:34:38,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:34:38" (3/3) ... [2018-10-24 21:34:38,682 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label49_true-unreach-call.c [2018-10-24 21:34:38,692 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:34:38,702 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:34:38,719 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:34:38,768 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:34:38,768 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:34:38,768 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:34:38,769 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:34:38,769 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:34:38,769 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:34:38,769 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:34:38,769 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:34:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 21:34:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-10-24 21:34:38,844 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:34:38,845 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:34:38,850 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:34:38,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:34:38,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1815238907, now seen corresponding path program 1 times [2018-10-24 21:34:38,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:34:38,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:34:38,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:34:38,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:34:38,923 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:34:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:34:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:34:39,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:34:39,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:34:39,479 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:34:39,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:34:39,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:34:39,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:34:39,508 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 21:34:53,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:34:53,537 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-10-24 21:34:53,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:34:53,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-10-24 21:34:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:34:53,602 INFO L225 Difference]: With dead ends: 4063 [2018-10-24 21:34:53,602 INFO L226 Difference]: Without dead ends: 2937 [2018-10-24 21:34:53,617 INFO L605 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 [2018-10-24 21:34:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-10-24 21:34:53,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-10-24 21:34:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-10-24 21:34:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-10-24 21:34:53,798 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 65 [2018-10-24 21:34:53,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:34:53,799 INFO L481 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-10-24 21:34:53,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:34:53,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-10-24 21:34:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 21:34:53,811 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:34:53,812 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:34:53,812 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:34:53,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:34:53,812 INFO L82 PathProgramCache]: Analyzing trace with hash -617731529, now seen corresponding path program 1 times [2018-10-24 21:34:53,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:34:53,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:34:53,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:34:53,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:34:53,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:34:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:34:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:34:54,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:34:54,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:34:54,257 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:34:54,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:34:54,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:34:54,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:34:54,260 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-10-24 21:35:13,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:35:13,292 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-10-24 21:35:13,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:35:13,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-10-24 21:35:13,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:35:13,338 INFO L225 Difference]: With dead ends: 7277 [2018-10-24 21:35:13,339 INFO L226 Difference]: Without dead ends: 5301 [2018-10-24 21:35:13,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:35:13,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-10-24 21:35:13,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-10-24 21:35:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-10-24 21:35:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-10-24 21:35:13,658 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 136 [2018-10-24 21:35:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:35:13,659 INFO L481 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-10-24 21:35:13,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:35:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-10-24 21:35:13,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 21:35:13,671 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:35:13,672 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:35:13,672 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:35:13,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:35:13,674 INFO L82 PathProgramCache]: Analyzing trace with hash -824137274, now seen corresponding path program 1 times [2018-10-24 21:35:13,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:35:13,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:35:13,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:35:13,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:35:13,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:35:13,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:35:13,930 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:35:13,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:35:13,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:35:13,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:35:13,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:35:13,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:35:13,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:35:13,932 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-10-24 21:35:32,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:35:32,425 INFO L93 Difference]: Finished difference Result 14735 states and 24202 transitions. [2018-10-24 21:35:32,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:35:32,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-10-24 21:35:32,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:35:32,473 INFO L225 Difference]: With dead ends: 14735 [2018-10-24 21:35:32,473 INFO L226 Difference]: Without dead ends: 9489 [2018-10-24 21:35:32,498 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:35:32,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9489 states. [2018-10-24 21:35:32,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9489 to 9420. [2018-10-24 21:35:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9420 states. [2018-10-24 21:35:32,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9420 states to 9420 states and 14479 transitions. [2018-10-24 21:35:32,752 INFO L78 Accepts]: Start accepts. Automaton has 9420 states and 14479 transitions. Word has length 139 [2018-10-24 21:35:32,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:35:32,752 INFO L481 AbstractCegarLoop]: Abstraction has 9420 states and 14479 transitions. [2018-10-24 21:35:32,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:35:32,753 INFO L276 IsEmpty]: Start isEmpty. Operand 9420 states and 14479 transitions. [2018-10-24 21:35:32,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 21:35:32,760 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:35:32,761 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:35:32,761 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:35:32,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:35:32,761 INFO L82 PathProgramCache]: Analyzing trace with hash 2024947088, now seen corresponding path program 1 times [2018-10-24 21:35:32,761 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:35:32,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:35:32,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:35:32,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:35:32,763 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:35:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:35:33,133 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:35:33,243 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:35:33,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:35:33,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:35:33,244 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:35:33,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:35:33,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:35:33,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:35:33,246 INFO L87 Difference]: Start difference. First operand 9420 states and 14479 transitions. Second operand 6 states. [2018-10-24 21:35:47,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:35:47,321 INFO L93 Difference]: Finished difference Result 28893 states and 45894 transitions. [2018-10-24 21:35:47,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:35:47,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-10-24 21:35:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:35:47,409 INFO L225 Difference]: With dead ends: 28893 [2018-10-24 21:35:47,409 INFO L226 Difference]: Without dead ends: 19479 [2018-10-24 21:35:47,467 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:35:47,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19479 states. [2018-10-24 21:35:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19479 to 19382. [2018-10-24 21:35:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19382 states. [2018-10-24 21:35:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19382 states to 19382 states and 27313 transitions. [2018-10-24 21:35:47,966 INFO L78 Accepts]: Start accepts. Automaton has 19382 states and 27313 transitions. Word has length 170 [2018-10-24 21:35:47,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:35:47,967 INFO L481 AbstractCegarLoop]: Abstraction has 19382 states and 27313 transitions. [2018-10-24 21:35:47,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:35:47,967 INFO L276 IsEmpty]: Start isEmpty. Operand 19382 states and 27313 transitions. [2018-10-24 21:35:47,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-24 21:35:47,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:35:47,980 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:35:47,980 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:35:47,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:35:47,981 INFO L82 PathProgramCache]: Analyzing trace with hash -658364123, now seen corresponding path program 1 times [2018-10-24 21:35:47,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:35:47,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:35:47,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:35:47,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:35:47,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:35:48,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:35:48,339 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:35:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:35:48,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:35:48,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:35:48,614 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:35:48,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:35:48,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:35:48,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:35:48,615 INFO L87 Difference]: Start difference. First operand 19382 states and 27313 transitions. Second operand 6 states. [2018-10-24 21:35:57,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:35:57,895 INFO L93 Difference]: Finished difference Result 49646 states and 77427 transitions. [2018-10-24 21:35:57,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:35:57,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2018-10-24 21:35:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:35:58,031 INFO L225 Difference]: With dead ends: 49646 [2018-10-24 21:35:58,031 INFO L226 Difference]: Without dead ends: 30270 [2018-10-24 21:35:58,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:35:58,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30270 states. [2018-10-24 21:35:58,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30270 to 30116. [2018-10-24 21:35:58,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30116 states. [2018-10-24 21:35:58,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30116 states to 30116 states and 43549 transitions. [2018-10-24 21:35:58,782 INFO L78 Accepts]: Start accepts. Automaton has 30116 states and 43549 transitions. Word has length 233 [2018-10-24 21:35:58,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:35:58,782 INFO L481 AbstractCegarLoop]: Abstraction has 30116 states and 43549 transitions. [2018-10-24 21:35:58,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:35:58,783 INFO L276 IsEmpty]: Start isEmpty. Operand 30116 states and 43549 transitions. [2018-10-24 21:35:58,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-10-24 21:35:58,799 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:35:58,800 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:35:58,800 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:35:58,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:35:58,801 INFO L82 PathProgramCache]: Analyzing trace with hash -16938847, now seen corresponding path program 1 times [2018-10-24 21:35:58,801 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:35:58,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:35:58,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:35:58,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:35:58,802 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:35:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:35:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 116 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:35:59,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:35:59,161 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:35:59,163 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-10-24 21:35:59,165 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3047], [3049], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3281], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 21:35:59,276 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:35:59,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:36:05,349 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:36:05,351 INFO L272 AbstractInterpreter]: Visited 110 different actions 110 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:36:05,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:36:05,374 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:36:09,605 INFO L232 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 71.93% of their original sizes. [2018-10-24 21:36:09,606 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:36:11,280 INFO L413 sIntCurrentIteration]: We have 245 unified AI predicates [2018-10-24 21:36:11,280 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:36:11,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:36:11,282 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-10-24 21:36:11,282 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:36:11,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 21:36:11,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 21:36:11,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 21:36:11,283 INFO L87 Difference]: Start difference. First operand 30116 states and 43549 transitions. Second operand 11 states. [2018-10-24 21:36:39,544 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:37:52,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:37:52,321 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:37:52,327 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:37:52,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:37:52 BoogieIcfgContainer [2018-10-24 21:37:52,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:37:52,329 INFO L168 Benchmark]: Toolchain (without parser) took 208982.76 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 213.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:37:52,332 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. [2018-10-24 21:37:52,333 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2494.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:37:52,334 INFO L168 Benchmark]: Boogie Procedure Inliner took 638.51 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 820.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:37:52,335 INFO L168 Benchmark]: Boogie Preprocessor took 343.64 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:37:52,336 INFO L168 Benchmark]: RCFGBuilder took 11846.89 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 217.6 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -42.5 MB). Peak memory consumption was 684.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:37:52,337 INFO L168 Benchmark]: TraceAbstraction took 193653.45 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: -1.6 GB). Peak memory consumption was 6.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:37:52,346 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 2494.81 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 638.51 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 820.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 343.64 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11846.89 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 217.6 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -42.5 MB). Peak memory consumption was 684.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 193653.45 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.6 GB). Free memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: -1.6 GB). Peak memory consumption was 6.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while BasicCegarLoop was constructing difference of abstraction (30116states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (5693 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 193.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 176.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2620 SDtfs, 21798 SDslu, 2667 SDs, 0 SdLazy, 29675 SolverSat, 9669 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 130.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 295 GetRequests, 248 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30116occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9960439560439559 AbsIntWeakeningRatio, 0.11020408163265306 AbsIntAvgWeakeningVarsNumRemoved, 26.97142857142857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 1324 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 989 NumberOfCodeBlocks, 989 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 983 ConstructedInterpolants, 0 QuantifiedInterpolants, 671693 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 353/424 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown