java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:36:16,903 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:36:16,907 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:36:16,925 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:36:16,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:36:16,929 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:36:16,931 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:36:16,934 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:36:16,936 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:36:16,938 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:36:16,941 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:36:16,941 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:36:16,942 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:36:16,945 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:36:16,946 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:36:16,946 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:36:16,947 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:36:16,951 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:36:16,953 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:36:16,962 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:36:16,966 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:36:16,967 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:36:16,972 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 12:36:16,984 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:36:16,984 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:36:16,985 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:36:16,985 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:36:16,986 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 12:36:17,006 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:36:17,006 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:36:17,007 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:36:17,007 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:36:17,007 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:36:17,007 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:36:17,008 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:36:17,008 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:36:17,008 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:36:17,008 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:36:17,009 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:36:17,009 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:36:17,009 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:36:17,010 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:36:17,010 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:36:17,010 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:36:17,010 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:36:17,010 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:36:17,011 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:36:17,015 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:36:17,015 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:36:17,015 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:36:17,015 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:36:17,016 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:36:17,016 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:36:17,016 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:36:17,016 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:36:17,016 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:36:17,017 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:36:17,017 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:36:17,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:36:17,017 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:36:17,017 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:36:17,018 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:36:17,071 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:36:17,089 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:36:17,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:36:17,094 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:36:17,095 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:36:17,096 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-11-07 12:36:17,170 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4461cf60a/e7769cd5be7946edacbe0889151db3f5/FLAGcb45a15ba [2018-11-07 12:36:17,938 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:36:17,939 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-11-07 12:36:17,964 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4461cf60a/e7769cd5be7946edacbe0889151db3f5/FLAGcb45a15ba [2018-11-07 12:36:17,981 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4461cf60a/e7769cd5be7946edacbe0889151db3f5 [2018-11-07 12:36:17,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:36:17,994 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:36:17,995 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:36:17,995 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:36:17,999 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:36:18,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:17" (1/1) ... [2018-11-07 12:36:18,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae48c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:18, skipping insertion in model container [2018-11-07 12:36:18,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:17" (1/1) ... [2018-11-07 12:36:18,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:36:18,155 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:36:19,118 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:36:19,123 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:36:19,540 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:36:19,569 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:36:19,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19 WrapperNode [2018-11-07 12:36:19,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:36:19,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:36:19,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:36:19,572 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:36:19,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (1/1) ... [2018-11-07 12:36:19,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (1/1) ... [2018-11-07 12:36:19,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:36:19,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:36:19,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:36:19,889 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:36:19,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (1/1) ... [2018-11-07 12:36:19,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (1/1) ... [2018-11-07 12:36:19,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (1/1) ... [2018-11-07 12:36:19,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (1/1) ... [2018-11-07 12:36:20,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (1/1) ... [2018-11-07 12:36:20,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (1/1) ... [2018-11-07 12:36:20,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (1/1) ... [2018-11-07 12:36:20,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:36:20,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:36:20,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:36:20,097 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:36:20,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (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 12:36:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:36:20,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:36:20,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:36:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 12:36:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 12:36:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:36:20,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:36:20,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:36:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:36:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:36:20,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:36:20,169 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:36:20,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:36:28,871 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:36:28,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:28 BoogieIcfgContainer [2018-11-07 12:36:28,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:36:28,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:36:28,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:36:28,877 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:36:28,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:17" (1/3) ... [2018-11-07 12:36:28,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:28, skipping insertion in model container [2018-11-07 12:36:28,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:19" (2/3) ... [2018-11-07 12:36:28,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@659f0a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:28, skipping insertion in model container [2018-11-07 12:36:28,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:28" (3/3) ... [2018-11-07 12:36:28,880 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label39_false-unreach-call.c [2018-11-07 12:36:28,890 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:36:28,899 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:36:28,918 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:36:28,971 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:36:28,971 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:36:28,971 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:36:28,971 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:36:28,971 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:36:28,972 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:36:28,972 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:36:28,972 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:36:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 12:36:29,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 12:36:29,029 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:36:29,030 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:36:29,033 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:36:29,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:36:29,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1098805956, now seen corresponding path program 1 times [2018-11-07 12:36:29,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:36:29,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:36:29,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:36:29,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:36:29,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:36:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:36:29,434 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:36:29,530 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 12:36:29,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:36:29,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:36:29,534 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:36:29,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:36:29,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:36:29,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:36:29,558 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 12:36:36,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:36:36,399 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 12:36:36,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:36:36,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-07 12:36:36,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:36:36,446 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 12:36:36,446 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 12:36:36,462 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 12:36:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 12:36:36,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 12:36:36,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 12:36:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-11-07 12:36:36,600 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 20 [2018-11-07 12:36:36,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:36:36,600 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-11-07 12:36:36,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:36:36,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-11-07 12:36:36,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-07 12:36:36,606 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:36:36,607 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:36:36,607 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:36:36,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:36:36,608 INFO L82 PathProgramCache]: Analyzing trace with hash -249505270, now seen corresponding path program 1 times [2018-11-07 12:36:36,608 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:36:36,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:36:36,609 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:36:36,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:36:36,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:36:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:36:36,994 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:36:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:36:37,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:36:37,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 12:36:37,119 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:36:37,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 12:36:37,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 12:36:37,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 12:36:37,121 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-11-07 12:36:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:36:44,669 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-11-07 12:36:44,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:36:44,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-11-07 12:36:44,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:36:44,690 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 12:36:44,690 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 12:36:44,695 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 12:36:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 12:36:44,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-11-07 12:36:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-11-07 12:36:44,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-11-07 12:36:44,773 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 90 [2018-11-07 12:36:44,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:36:44,774 INFO L480 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-11-07 12:36:44,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 12:36:44,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-11-07 12:36:44,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-11-07 12:36:44,778 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:36:44,778 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:36:44,779 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:36:44,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:36:44,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938777, now seen corresponding path program 1 times [2018-11-07 12:36:44,779 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:36:44,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:36:44,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:36:44,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:36:44,781 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:36:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:36:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:36:44,981 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:36:44,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 12:36:44,981 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:36:44,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 12:36:44,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 12:36:44,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 12:36:44,983 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-11-07 12:36:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:36:50,543 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-11-07 12:36:50,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:36:50,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-11-07 12:36:50,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:36:50,580 INFO L225 Difference]: With dead ends: 7345 [2018-11-07 12:36:50,580 INFO L226 Difference]: Without dead ends: 4426 [2018-11-07 12:36:50,590 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 12:36:50,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-11-07 12:36:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-11-07 12:36:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-11-07 12:36:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-11-07 12:36:50,737 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 91 [2018-11-07 12:36:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:36:50,738 INFO L480 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-11-07 12:36:50,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 12:36:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-11-07 12:36:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-07 12:36:50,741 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:36:50,741 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:36:50,742 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:36:50,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:36:50,742 INFO L82 PathProgramCache]: Analyzing trace with hash 677319619, now seen corresponding path program 1 times [2018-11-07 12:36:50,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:36:50,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:36:50,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:36:50,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:36:50,744 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:36:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:36:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:36:50,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:36:50,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 12:36:50,891 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:36:50,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 12:36:50,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 12:36:50,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 12:36:50,894 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-11-07 12:36:59,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:36:59,681 INFO L93 Difference]: Finished difference Result 14806 states and 21963 transitions. [2018-11-07 12:36:59,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 12:36:59,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-11-07 12:36:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:36:59,731 INFO L225 Difference]: With dead ends: 14806 [2018-11-07 12:36:59,732 INFO L226 Difference]: Without dead ends: 10421 [2018-11-07 12:36:59,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 12:36:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10421 states. [2018-11-07 12:36:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10421 to 10272. [2018-11-07 12:36:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10272 states. [2018-11-07 12:37:00,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10272 states to 10272 states and 13610 transitions. [2018-11-07 12:37:00,000 INFO L78 Accepts]: Start accepts. Automaton has 10272 states and 13610 transitions. Word has length 93 [2018-11-07 12:37:00,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:37:00,001 INFO L480 AbstractCegarLoop]: Abstraction has 10272 states and 13610 transitions. [2018-11-07 12:37:00,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 12:37:00,001 INFO L276 IsEmpty]: Start isEmpty. Operand 10272 states and 13610 transitions. [2018-11-07 12:37:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 12:37:00,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:37:00,003 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:37:00,003 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:37:00,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:37:00,004 INFO L82 PathProgramCache]: Analyzing trace with hash 293997458, now seen corresponding path program 1 times [2018-11-07 12:37:00,004 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:37:00,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:00,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:37:00,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:00,005 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:37:00,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:37:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:37:00,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:37:00,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 12:37:00,141 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:37:00,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 12:37:00,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 12:37:00,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:37:00,142 INFO L87 Difference]: Start difference. First operand 10272 states and 13610 transitions. Second operand 4 states. [2018-11-07 12:37:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:37:07,213 INFO L93 Difference]: Finished difference Result 38247 states and 52392 transitions. [2018-11-07 12:37:07,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 12:37:07,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-11-07 12:37:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:37:07,336 INFO L225 Difference]: With dead ends: 38247 [2018-11-07 12:37:07,336 INFO L226 Difference]: Without dead ends: 27981 [2018-11-07 12:37:07,393 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 12:37:07,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27981 states. [2018-11-07 12:37:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27981 to 27981. [2018-11-07 12:37:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27981 states. [2018-11-07 12:37:08,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27981 states to 27981 states and 35213 transitions. [2018-11-07 12:37:08,015 INFO L78 Accepts]: Start accepts. Automaton has 27981 states and 35213 transitions. Word has length 118 [2018-11-07 12:37:08,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:37:08,016 INFO L480 AbstractCegarLoop]: Abstraction has 27981 states and 35213 transitions. [2018-11-07 12:37:08,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 12:37:08,016 INFO L276 IsEmpty]: Start isEmpty. Operand 27981 states and 35213 transitions. [2018-11-07 12:37:08,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-11-07 12:37:08,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:37:08,048 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:37:08,049 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:37:08,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:37:08,049 INFO L82 PathProgramCache]: Analyzing trace with hash -962650317, now seen corresponding path program 1 times [2018-11-07 12:37:08,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:37:08,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:08,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:37:08,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:37:08,050 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:37:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:37:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 114 proven. 71 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 12:37:08,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:37:08,454 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:37:08,456 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-11-07 12:37:08,464 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1683], [1685], [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], [2124], [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], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [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], [2380], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 12:37:08,546 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:37:08,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:37:09,246 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:37:09,249 INFO L272 AbstractInterpreter]: Visited 142 different actions 142 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:37:09,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:37:09,300 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:37:10,033 INFO L227 lantSequenceWeakener]: Weakened 323 states. On average, predicates are now at 77.31% of their original sizes. [2018-11-07 12:37:10,033 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:37:10,379 INFO L415 sIntCurrentIteration]: We unified 334 AI predicates to 334 [2018-11-07 12:37:10,380 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:37:10,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:37:10,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 12:37:10,381 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:37:10,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:37:10,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:37:10,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:37:10,383 INFO L87 Difference]: Start difference. First operand 27981 states and 35213 transitions. Second operand 7 states. [2018-11-07 12:37:21,262 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 12:40:23,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:40:23,175 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 12:40:23,182 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 12:40:23,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:40:23 BoogieIcfgContainer [2018-11-07 12:40:23,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 12:40:23,184 INFO L168 Benchmark]: Toolchain (without parser) took 245191.01 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -504.3 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 12:40:23,185 INFO L168 Benchmark]: CDTParser took 0.21 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 12:40:23,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1575.93 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 12:40:23,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 317.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -971.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 12:40:23,187 INFO L168 Benchmark]: Boogie Preprocessor took 206.95 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-07 12:40:23,188 INFO L168 Benchmark]: RCFGBuilder took 8775.85 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: 507.9 MB). Peak memory consumption was 507.9 MB. Max. memory is 7.1 GB. [2018-11-07 12:40:23,189 INFO L168 Benchmark]: TraceAbstraction took 234309.72 ms. Allocated memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -202.6 MB). Peak memory consumption was 850.7 MB. Max. memory is 7.1 GB. [2018-11-07 12:40:23,195 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1575.93 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 317.64 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -971.7 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 206.95 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: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8775.85 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: 507.9 MB). Peak memory consumption was 507.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234309.72 ms. Allocated memory was 2.3 GB in the beginning and 3.4 GB in the end (delta: 1.1 GB). Free memory was 1.7 GB in the beginning and 1.9 GB in the end (delta: -202.6 MB). Peak memory consumption was 850.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was constructing difference of abstraction (27981states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (17562 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 234.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 229.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 957 SDtfs, 11601 SDslu, 854 SDs, 0 SdLazy, 20411 SolverSat, 5805 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 202.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 372 GetRequests, 341 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27981occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9977570832361254 AbsIntWeakeningRatio, 0.09580838323353294 AbsIntAvgWeakeningVarsNumRemoved, 18.188622754491018 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 210 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 747 NumberOfCodeBlocks, 747 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 741 ConstructedInterpolants, 0 QuantifiedInterpolants, 246551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 271/342 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown