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/Problem18_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:45:07,918 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:45:07,922 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:45:07,947 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:45:07,947 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:45:07,948 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:45:07,950 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:45:07,953 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:45:07,956 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:45:07,965 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:45:07,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:45:07,966 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:45:07,969 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:45:07,972 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:45:07,975 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:45:07,976 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:45:07,977 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:45:07,982 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:45:07,986 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:45:07,988 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:45:07,993 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:45:07,996 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:45:08,001 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:45:08,011 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 00:45:08,013 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 00:45:08,014 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 00:45:08,016 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 00:45:08,016 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 [2018-11-07 00:45:08,045 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:45:08,045 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:45:08,047 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:45:08,047 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:45:08,047 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:45:08,048 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:45:08,048 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:45:08,048 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:45:08,048 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:45:08,048 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:45:08,049 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:45:08,049 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:45:08,050 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:45:08,050 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:45:08,051 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:45:08,051 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:45:08,051 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:45:08,051 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:45:08,051 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:45:08,053 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:45:08,054 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:45:08,054 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:45:08,054 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:45:08,054 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:45:08,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:45:08,055 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:45:08,056 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:45:08,056 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:45:08,056 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:45:08,056 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:45:08,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:45:08,057 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:45:08,057 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:45:08,057 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:45:08,124 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:45:08,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:45:08,146 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:45:08,147 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:45:08,148 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:45:08,149 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label09_false-unreach-call.c [2018-11-07 00:45:08,224 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c04aee66/c047bb77540b46f78584387912b970a2/FLAG5fe1dde06 [2018-11-07 00:45:08,982 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:45:08,983 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label09_false-unreach-call.c [2018-11-07 00:45:09,012 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c04aee66/c047bb77540b46f78584387912b970a2/FLAG5fe1dde06 [2018-11-07 00:45:09,032 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c04aee66/c047bb77540b46f78584387912b970a2 [2018-11-07 00:45:09,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:45:09,045 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:45:09,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:45:09,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:45:09,051 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:45:09,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:09" (1/1) ... [2018-11-07 00:45:09,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d100604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:09, skipping insertion in model container [2018-11-07 00:45:09,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:45:09" (1/1) ... [2018-11-07 00:45:09,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:45:09,203 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:45:10,378 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:45:10,384 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:45:10,807 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:45:10,839 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:45:10,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10 WrapperNode [2018-11-07 00:45:10,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:45:10,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:45:10,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:45:10,842 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:45:10,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2018-11-07 00:45:11,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2018-11-07 00:45:11,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:45:11,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:45:11,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:45:11,141 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:45:11,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2018-11-07 00:45:11,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2018-11-07 00:45:11,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2018-11-07 00:45:11,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2018-11-07 00:45:11,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2018-11-07 00:45:11,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2018-11-07 00:45:11,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... [2018-11-07 00:45:11,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:45:11,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:45:11,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:45:11,367 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:45:11,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:45:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:45:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:45:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:45:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 00:45:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 00:45:11,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:45:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:45:11,434 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:45:11,434 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:45:11,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:45:11,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:45:11,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:45:11,436 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:45:20,682 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:45:20,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:20 BoogieIcfgContainer [2018-11-07 00:45:20,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:45:20,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:45:20,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:45:20,688 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:45:20,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:45:09" (1/3) ... [2018-11-07 00:45:20,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e082c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:20, skipping insertion in model container [2018-11-07 00:45:20,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:45:10" (2/3) ... [2018-11-07 00:45:20,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e082c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:45:20, skipping insertion in model container [2018-11-07 00:45:20,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:45:20" (3/3) ... [2018-11-07 00:45:20,692 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label09_false-unreach-call.c [2018-11-07 00:45:20,702 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:45:20,711 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:45:20,730 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:45:20,780 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:45:20,780 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:45:20,780 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:45:20,780 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:45:20,780 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:45:20,780 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:45:20,781 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:45:20,781 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:45:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 00:45:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-07 00:45:20,828 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:45:20,829 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:45:20,832 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:45:20,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:20,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1936021327, now seen corresponding path program 1 times [2018-11-07 00:45:20,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:45:20,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:20,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:45:20,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:20,889 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:45:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:45:21,224 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 00:45:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:45:21,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:45:21,333 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:45:21,333 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:45:21,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:45:21,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:45:21,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:45:21,359 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 00:45:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:45:27,585 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 00:45:27,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:45:27,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-07 00:45:27,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:45:27,619 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 00:45:27,619 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 00:45:27,633 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:45:27,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 00:45:27,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 00:45:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 00:45:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-11-07 00:45:27,790 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 17 [2018-11-07 00:45:27,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:45:27,791 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-11-07 00:45:27,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:45:27,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-11-07 00:45:27,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-07 00:45:27,801 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:45:27,801 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] [2018-11-07 00:45:27,802 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:45:27,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:27,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1492732416, now seen corresponding path program 1 times [2018-11-07 00:45:27,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:45:27,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:27,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:45:27,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:27,804 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:45:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:45:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:45:28,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:45:28,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:45:28,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:45:28,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:45:28,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:45:28,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:45:28,091 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-11-07 00:45:35,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:45:35,845 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-11-07 00:45:35,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:45:35,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2018-11-07 00:45:35,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:45:35,866 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 00:45:35,866 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 00:45:35,872 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:45:35,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 00:45:35,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 00:45:35,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 00:45:35,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-11-07 00:45:35,962 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 87 [2018-11-07 00:45:35,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:45:35,962 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-11-07 00:45:35,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:45:35,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-11-07 00:45:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-11-07 00:45:35,967 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:45:35,967 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] [2018-11-07 00:45:35,967 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:45:35,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:35,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1467766747, now seen corresponding path program 1 times [2018-11-07 00:45:35,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:45:35,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:35,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:45:35,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:35,969 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:45:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:45:36,135 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:45:36,135 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:45:36,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:45:36,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:45:36,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:45:36,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:45:36,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:45:36,137 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-11-07 00:45:41,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:45:41,406 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-11-07 00:45:41,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:45:41,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-11-07 00:45:41,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:45:41,437 INFO L225 Difference]: With dead ends: 7345 [2018-11-07 00:45:41,437 INFO L226 Difference]: Without dead ends: 4426 [2018-11-07 00:45:41,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:45:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-11-07 00:45:41,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-11-07 00:45:41,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-11-07 00:45:41,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-11-07 00:45:41,569 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 88 [2018-11-07 00:45:41,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:45:41,570 INFO L480 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-11-07 00:45:41,570 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:45:41,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-11-07 00:45:41,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-07 00:45:41,575 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:45:41,575 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] [2018-11-07 00:45:41,576 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:45:41,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:41,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1043283703, now seen corresponding path program 1 times [2018-11-07 00:45:41,576 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:45:41,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:41,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:45:41,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:41,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:45:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:45:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:45:41,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:45:41,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:45:41,924 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:45:41,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:45:41,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:45:41,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:45:41,925 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-11-07 00:45:50,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:45:50,616 INFO L93 Difference]: Finished difference Result 14805 states and 21963 transitions. [2018-11-07 00:45:50,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 00:45:50,616 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-11-07 00:45:50,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:45:50,666 INFO L225 Difference]: With dead ends: 14805 [2018-11-07 00:45:50,667 INFO L226 Difference]: Without dead ends: 10420 [2018-11-07 00:45:50,690 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:45:50,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10420 states. [2018-11-07 00:45:50,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10420 to 10273. [2018-11-07 00:45:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10273 states. [2018-11-07 00:45:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10273 states to 10273 states and 13611 transitions. [2018-11-07 00:45:50,971 INFO L78 Accepts]: Start accepts. Automaton has 10273 states and 13611 transitions. Word has length 90 [2018-11-07 00:45:50,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:45:50,972 INFO L480 AbstractCegarLoop]: Abstraction has 10273 states and 13611 transitions. [2018-11-07 00:45:50,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:45:50,972 INFO L276 IsEmpty]: Start isEmpty. Operand 10273 states and 13611 transitions. [2018-11-07 00:45:50,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 00:45:50,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:45:50,974 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] [2018-11-07 00:45:50,975 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:45:50,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:50,975 INFO L82 PathProgramCache]: Analyzing trace with hash 755084536, now seen corresponding path program 1 times [2018-11-07 00:45:50,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:45:50,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:50,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:45:50,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:45:50,982 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:45:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:45:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:45:51,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:45:51,331 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:45:51,332 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 116 with the following transitions: [2018-11-07 00:45:51,334 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1659], [1661], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 00:45:51,410 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:45:51,410 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:45:54,144 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:45:54,146 INFO L272 AbstractInterpreter]: Visited 102 different actions 102 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 00:45:54,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:54,156 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:45:55,400 INFO L227 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 77.35% of their original sizes. [2018-11-07 00:45:55,400 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:45:55,643 INFO L415 sIntCurrentIteration]: We unified 114 AI predicates to 114 [2018-11-07 00:45:55,644 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:45:55,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:45:55,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 00:45:55,645 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:45:55,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 00:45:55,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 00:45:55,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 00:45:55,646 INFO L87 Difference]: Start difference. First operand 10273 states and 13611 transitions. Second operand 7 states. [2018-11-07 00:46:03,308 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:47:45,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:47:45,872 INFO L93 Difference]: Finished difference Result 21245 states and 27992 transitions. [2018-11-07 00:47:45,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:47:45,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2018-11-07 00:47:45,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:47:45,912 INFO L225 Difference]: With dead ends: 21245 [2018-11-07 00:47:45,913 INFO L226 Difference]: Without dead ends: 10978 [2018-11-07 00:47:45,941 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:47:45,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10978 states. [2018-11-07 00:47:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10978 to 10976. [2018-11-07 00:47:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10976 states. [2018-11-07 00:47:46,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10976 states to 10976 states and 14326 transitions. [2018-11-07 00:47:46,185 INFO L78 Accepts]: Start accepts. Automaton has 10976 states and 14326 transitions. Word has length 115 [2018-11-07 00:47:46,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:47:46,186 INFO L480 AbstractCegarLoop]: Abstraction has 10976 states and 14326 transitions. [2018-11-07 00:47:46,186 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 00:47:46,186 INFO L276 IsEmpty]: Start isEmpty. Operand 10976 states and 14326 transitions. [2018-11-07 00:47:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2018-11-07 00:47:46,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:47:46,190 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 00:47:46,190 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:47:46,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:47:46,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1855752694, now seen corresponding path program 1 times [2018-11-07 00:47:46,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:47:46,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:47:46,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:47:46,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:47:46,192 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:47:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:47:46,732 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:47:46,933 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:47:47,159 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 00:47:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 74 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:47:47,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:47:47,597 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:47:47,597 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 303 with the following transitions: [2018-11-07 00:47:47,598 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1659], [1661], [1664], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 00:47:47,607 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:47:47,607 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:48:00,181 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:48:00,182 INFO L272 AbstractInterpreter]: Visited 195 different actions 384 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 00:48:00,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:48:00,193 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:48:02,775 INFO L227 lantSequenceWeakener]: Weakened 90 states. On average, predicates are now at 77.88% of their original sizes. [2018-11-07 00:48:02,775 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:48:22,760 INFO L415 sIntCurrentIteration]: We unified 301 AI predicates to 301 [2018-11-07 00:48:22,760 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:48:22,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:48:22,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [11] total 29 [2018-11-07 00:48:22,762 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:48:22,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 00:48:22,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 00:48:22,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-07 00:48:22,764 INFO L87 Difference]: Start difference. First operand 10976 states and 14326 transitions. Second operand 20 states. Received shutdown request... [2018-11-07 00:48:46,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 00:48:46,396 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:48:46,402 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:48:46,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:48:46 BoogieIcfgContainer [2018-11-07 00:48:46,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:48:46,404 INFO L168 Benchmark]: Toolchain (without parser) took 217359.94 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 00:48:46,405 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 00:48:46,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1794.86 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:46,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 299.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -943.0 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:46,407 INFO L168 Benchmark]: Boogie Preprocessor took 225.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:46,408 INFO L168 Benchmark]: RCFGBuilder took 9316.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 502.3 MB). Peak memory consumption was 502.3 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:46,409 INFO L168 Benchmark]: TraceAbstraction took 205718.79 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 739.8 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:46,414 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 1794.86 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 299.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -943.0 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 225.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9316.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 502.3 MB). Peak memory consumption was 502.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205718.79 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 739.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was constructing difference of abstraction (10976states) and FLOYD_HOARE automaton (currently 9 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (120 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 205.6s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 162.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1247 SDtfs, 10699 SDslu, 791 SDs, 0 SdLazy, 19213 SolverSat, 4174 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 452 GetRequests, 367 SyntacticMatches, 38 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 21.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10976occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9951370700192073 AbsIntWeakeningRatio, 0.1108433734939759 AbsIntAvgWeakeningVarsNumRemoved, 753.4722891566265 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 210 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 699 NumberOfCodeBlocks, 699 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 693 ConstructedInterpolants, 0 QuantifiedInterpolants, 1091866 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 104/158 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown