java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 23:11:40,911 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 23:11:40,913 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 23:11:40,928 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 23:11:40,929 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 23:11:40,930 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 23:11:40,931 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 23:11:40,933 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 23:11:40,935 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 23:11:40,936 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 23:11:40,937 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 23:11:40,937 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 23:11:40,938 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 23:11:40,939 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 23:11:40,940 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 23:11:40,941 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 23:11:40,942 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 23:11:40,944 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 23:11:40,946 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 23:11:40,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 23:11:40,953 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 23:11:40,956 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 23:11:40,963 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 23:11:40,976 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 23:11:40,976 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 23:11:40,977 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 23:11:40,978 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 23:11:40,978 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-06 23:11:41,002 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 23:11:41,003 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 23:11:41,004 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 23:11:41,004 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-06 23:11:41,004 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-06 23:11:41,004 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-06 23:11:41,005 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-06 23:11:41,005 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-06 23:11:41,005 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-06 23:11:41,005 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-06 23:11:41,005 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-06 23:11:41,006 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-06 23:11:41,007 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 23:11:41,007 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 23:11:41,007 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 23:11:41,007 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 23:11:41,007 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 23:11:41,008 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 23:11:41,008 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 23:11:41,008 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 23:11:41,008 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 23:11:41,009 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 23:11:41,009 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 23:11:41,009 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 23:11:41,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 23:11:41,009 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 23:11:41,011 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 23:11:41,011 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 23:11:41,011 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-06 23:11:41,011 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 23:11:41,011 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 23:11:41,012 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 23:11:41,012 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 23:11:41,012 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-06 23:11:41,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 23:11:41,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 23:11:41,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 23:11:41,086 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 23:11:41,087 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 23:11:41,087 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52_false-unreach-call.c [2018-11-06 23:11:41,146 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4cd8ee89/95b4460c57324712a6f7f51e8a7bc3d6/FLAG4df732de1 [2018-11-06 23:11:41,944 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 23:11:41,945 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label52_false-unreach-call.c [2018-11-06 23:11:41,965 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4cd8ee89/95b4460c57324712a6f7f51e8a7bc3d6/FLAG4df732de1 [2018-11-06 23:11:41,983 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4cd8ee89/95b4460c57324712a6f7f51e8a7bc3d6 [2018-11-06 23:11:41,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 23:11:41,998 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 23:11:42,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 23:11:42,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 23:11:42,004 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 23:11:42,006 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:11:41" (1/1) ... [2018-11-06 23:11:42,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b552eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:42, skipping insertion in model container [2018-11-06 23:11:42,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:11:41" (1/1) ... [2018-11-06 23:11:42,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 23:11:42,141 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 23:11:43,047 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:11:43,053 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 23:11:43,324 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 23:11:43,349 INFO L193 MainTranslator]: Completed translation [2018-11-06 23:11:43,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43 WrapperNode [2018-11-06 23:11:43,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 23:11:43,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 23:11:43,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 23:11:43,352 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 23:11:43,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (1/1) ... [2018-11-06 23:11:43,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (1/1) ... [2018-11-06 23:11:43,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 23:11:43,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 23:11:43,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 23:11:43,599 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 23:11:43,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (1/1) ... [2018-11-06 23:11:43,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (1/1) ... [2018-11-06 23:11:43,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (1/1) ... [2018-11-06 23:11:43,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (1/1) ... [2018-11-06 23:11:43,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (1/1) ... [2018-11-06 23:11:43,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (1/1) ... [2018-11-06 23:11:43,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (1/1) ... [2018-11-06 23:11:43,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 23:11:43,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 23:11:43,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 23:11:43,789 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 23:11:43,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (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 [2018-11-06 23:11:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 23:11:43,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-06 23:11:43,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-06 23:11:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-06 23:11:43,866 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-06 23:11:43,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 23:11:43,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 23:11:43,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-06 23:11:43,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-06 23:11:49,184 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 23:11:49,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:49 BoogieIcfgContainer [2018-11-06 23:11:49,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 23:11:49,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 23:11:49,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 23:11:49,192 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 23:11:49,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:11:41" (1/3) ... [2018-11-06 23:11:49,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dd46aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:49, skipping insertion in model container [2018-11-06 23:11:49,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:11:43" (2/3) ... [2018-11-06 23:11:49,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63dd46aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:11:49, skipping insertion in model container [2018-11-06 23:11:49,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:11:49" (3/3) ... [2018-11-06 23:11:49,198 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label52_false-unreach-call.c [2018-11-06 23:11:49,210 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 23:11:49,223 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 23:11:49,243 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 23:11:49,299 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 23:11:49,299 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 23:11:49,299 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 23:11:49,299 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 23:11:49,300 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 23:11:49,300 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 23:11:49,300 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 23:11:49,300 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 23:11:49,342 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-06 23:11:49,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-06 23:11:49,359 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:11:49,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:11:49,364 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:11:49,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:11:49,372 INFO L82 PathProgramCache]: Analyzing trace with hash 132642340, now seen corresponding path program 1 times [2018-11-06 23:11:49,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:11:49,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:49,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:11:49,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:49,437 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:11:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:11:50,362 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-06 23:11:50,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:11:50,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:11:50,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 23:11:50,676 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:11:50,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 23:11:50,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 23:11:50,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:11:50,707 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-06 23:11:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:11:53,315 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-11-06 23:11:53,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 23:11:53,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2018-11-06 23:11:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:11:53,341 INFO L225 Difference]: With dead ends: 848 [2018-11-06 23:11:53,341 INFO L226 Difference]: Without dead ends: 534 [2018-11-06 23:11:53,349 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:11:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-11-06 23:11:53,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-11-06 23:11:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-11-06 23:11:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-11-06 23:11:53,451 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 153 [2018-11-06 23:11:53,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:11:53,452 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-11-06 23:11:53,452 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 23:11:53,453 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-11-06 23:11:53,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-11-06 23:11:53,460 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:11:53,461 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:11:53,461 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:11:53,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:11:53,462 INFO L82 PathProgramCache]: Analyzing trace with hash 962373920, now seen corresponding path program 1 times [2018-11-06 23:11:53,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:11:53,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:53,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:11:53,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:53,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:11:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:11:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:11:53,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 23:11:53,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 23:11:53,944 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-06 23:11:53,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 23:11:53,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 23:11:53,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:11:53,948 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-11-06 23:11:56,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:11:56,353 INFO L93 Difference]: Finished difference Result 1494 states and 2513 transitions. [2018-11-06 23:11:56,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 23:11:56,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2018-11-06 23:11:56,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:11:56,373 INFO L225 Difference]: With dead ends: 1494 [2018-11-06 23:11:56,374 INFO L226 Difference]: Without dead ends: 968 [2018-11-06 23:11:56,377 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 23:11:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-11-06 23:11:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 952. [2018-11-06 23:11:56,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-11-06 23:11:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1529 transitions. [2018-11-06 23:11:56,427 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1529 transitions. Word has length 166 [2018-11-06 23:11:56,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:11:56,428 INFO L480 AbstractCegarLoop]: Abstraction has 952 states and 1529 transitions. [2018-11-06 23:11:56,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 23:11:56,428 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1529 transitions. [2018-11-06 23:11:56,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-06 23:11:56,435 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:11:56,436 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 23:11:56,436 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:11:56,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:11:56,436 INFO L82 PathProgramCache]: Analyzing trace with hash 766647040, now seen corresponding path program 1 times [2018-11-06 23:11:56,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-06 23:11:56,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:56,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:11:56,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:11:56,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-06 23:11:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:11:56,975 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:11:56,975 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:11:56,976 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-06 23:11:56,977 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-11-06 23:11:56,980 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-06 23:11:57,069 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-06 23:11:57,070 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-06 23:16:18,634 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-06 23:16:18,635 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-06 23:16:18,637 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-06 23:16:18,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:16:18,637 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:16:18,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:16:18,655 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-06 23:16:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:16:18,857 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:16:18,896 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-06 23:16:19,097 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:16:19,100 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 23:16:19,105 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 23:16:19,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:16:19 BoogieIcfgContainer [2018-11-06 23:16:19,106 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 23:16:19,107 INFO L168 Benchmark]: Toolchain (without parser) took 277109.72 ms. Allocated memory was 1.5 GB in the beginning and 2.8 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -862.3 MB). Peak memory consumption was 476.8 MB. Max. memory is 7.1 GB. [2018-11-06 23:16:19,108 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 23:16:19,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1351.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-06 23:16:19,110 INFO L168 Benchmark]: Boogie Procedure Inliner took 246.75 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -832.7 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2018-11-06 23:16:19,112 INFO L168 Benchmark]: Boogie Preprocessor took 189.18 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 23:16:19,112 INFO L168 Benchmark]: RCFGBuilder took 5397.54 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 264.2 MB). Peak memory consumption was 264.2 MB. Max. memory is 7.1 GB. [2018-11-06 23:16:19,113 INFO L168 Benchmark]: TraceAbstraction took 269918.03 ms. Allocated memory was 2.2 GB in the beginning and 2.8 GB in the end (delta: 626.5 MB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -367.8 MB). Peak memory consumption was 258.7 MB. Max. memory is 7.1 GB. [2018-11-06 23:16:19,118 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1351.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 246.75 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 712.5 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -832.7 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 189.18 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5397.54 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 264.2 MB). Peak memory consumption was 264.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 269918.03 ms. Allocated memory was 2.2 GB in the beginning and 2.8 GB in the end (delta: 626.5 MB). Free memory was 1.9 GB in the beginning and 2.2 GB in the end (delta: -367.8 MB). Peak memory consumption was 258.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1473]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1473). Cancelled while BasicCegarLoop was analyzing trace of length 178 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 269.8s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 5.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 729 SDtfs, 315 SDslu, 145 SDs, 0 SdLazy, 1257 SolverSat, 410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=952occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 261.6s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 317 ConstructedInterpolants, 0 QuantifiedInterpolants, 167899 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown