./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea94c2a7f5c98d387db22a0b269794366125ef96ca4390d29fd777c1f058153c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 02:48:48,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 02:48:48,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 02:48:48,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 02:48:48,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 02:48:48,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 02:48:48,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 02:48:48,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 02:48:48,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 02:48:48,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 02:48:48,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 02:48:48,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 02:48:48,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 02:48:48,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 02:48:48,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 02:48:48,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 02:48:48,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 02:48:48,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 02:48:48,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 02:48:48,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 02:48:48,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 02:48:48,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 02:48:48,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 02:48:48,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 02:48:48,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 02:48:48,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 02:48:48,887 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 02:48:48,888 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 02:48:48,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 02:48:48,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 02:48:48,889 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 02:48:48,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 02:48:48,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 02:48:48,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 02:48:48,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 02:48:48,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 02:48:48,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 02:48:48,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 02:48:48,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 02:48:48,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 02:48:48,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 02:48:48,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 02:48:48,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 02:48:48,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 02:48:48,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 02:48:48,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 02:48:48,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 02:48:48,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 02:48:48,928 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 02:48:48,928 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 02:48:48,928 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 02:48:48,929 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 02:48:48,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 02:48:48,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 02:48:48,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 02:48:48,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 02:48:48,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 02:48:48,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 02:48:48,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 02:48:48,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 02:48:48,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 02:48:48,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 02:48:48,930 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 02:48:48,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 02:48:48,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 02:48:48,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 02:48:48,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea94c2a7f5c98d387db22a0b269794366125ef96ca4390d29fd777c1f058153c [2021-12-17 02:48:49,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 02:48:49,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 02:48:49,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 02:48:49,125 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 02:48:49,139 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 02:48:49,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c [2021-12-17 02:48:49,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a45db2cb/4680947feda84195909508263cdfef02/FLAG2b7b62070 [2021-12-17 02:48:49,524 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 02:48:49,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c [2021-12-17 02:48:49,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a45db2cb/4680947feda84195909508263cdfef02/FLAG2b7b62070 [2021-12-17 02:48:49,922 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a45db2cb/4680947feda84195909508263cdfef02 [2021-12-17 02:48:49,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 02:48:49,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 02:48:49,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 02:48:49,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 02:48:49,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 02:48:49,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:48:49" (1/1) ... [2021-12-17 02:48:49,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e64289c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:49, skipping insertion in model container [2021-12-17 02:48:49,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 02:48:49" (1/1) ... [2021-12-17 02:48:49,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 02:48:49,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 02:48:50,079 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c[2713,2726] [2021-12-17 02:48:50,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 02:48:50,159 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 02:48:50,168 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-1.c[2713,2726] [2021-12-17 02:48:50,207 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 02:48:50,216 INFO L208 MainTranslator]: Completed translation [2021-12-17 02:48:50,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50 WrapperNode [2021-12-17 02:48:50,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 02:48:50,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 02:48:50,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 02:48:50,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 02:48:50,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (1/1) ... [2021-12-17 02:48:50,232 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (1/1) ... [2021-12-17 02:48:50,269 INFO L137 Inliner]: procedures = 37, calls = 62, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 916 [2021-12-17 02:48:50,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 02:48:50,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 02:48:50,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 02:48:50,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 02:48:50,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (1/1) ... [2021-12-17 02:48:50,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (1/1) ... [2021-12-17 02:48:50,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (1/1) ... [2021-12-17 02:48:50,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (1/1) ... [2021-12-17 02:48:50,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (1/1) ... [2021-12-17 02:48:50,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (1/1) ... [2021-12-17 02:48:50,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (1/1) ... [2021-12-17 02:48:50,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 02:48:50,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 02:48:50,318 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 02:48:50,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 02:48:50,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (1/1) ... [2021-12-17 02:48:50,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 02:48:50,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 02:48:50,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 02:48:50,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 02:48:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 02:48:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-17 02:48:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-17 02:48:50,393 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-17 02:48:50,393 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-17 02:48:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-17 02:48:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-17 02:48:50,394 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-17 02:48:50,394 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-17 02:48:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 02:48:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-17 02:48:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-17 02:48:50,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 02:48:50,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 02:48:50,523 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 02:48:50,524 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 02:48:50,528 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,622 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-17 02:48:50,623 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-17 02:48:50,624 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,640 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-17 02:48:50,640 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-17 02:48:50,648 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,651 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,654 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,658 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,661 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,663 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,665 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,666 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,669 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:50,991 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume !false; [2021-12-17 02:48:50,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume false; [2021-12-17 02:48:50,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume !false; [2021-12-17 02:48:50,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume false; [2021-12-17 02:48:50,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2021-12-17 02:48:50,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2021-12-17 02:48:50,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2021-12-17 02:48:50,992 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2021-12-17 02:48:50,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume !false; [2021-12-17 02:48:50,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume false; [2021-12-17 02:48:50,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-17 02:48:50,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-17 02:48:50,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2021-12-17 02:48:50,993 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false; [2021-12-17 02:48:50,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##119: assume !false; [2021-12-17 02:48:50,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##118: assume false; [2021-12-17 02:48:50,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##122: assume false; [2021-12-17 02:48:50,994 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume !false; [2021-12-17 02:48:50,997 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-17 02:48:51,024 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-17 02:48:51,025 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-17 02:48:51,032 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 02:48:51,040 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 02:48:51,041 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 02:48:51,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:48:51 BoogieIcfgContainer [2021-12-17 02:48:51,043 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 02:48:51,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 02:48:51,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 02:48:51,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 02:48:51,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 02:48:49" (1/3) ... [2021-12-17 02:48:51,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b2c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:48:51, skipping insertion in model container [2021-12-17 02:48:51,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 02:48:50" (2/3) ... [2021-12-17 02:48:51,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b2c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 02:48:51, skipping insertion in model container [2021-12-17 02:48:51,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:48:51" (3/3) ... [2021-12-17 02:48:51,062 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2021-12-17 02:48:51,065 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 02:48:51,066 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 02:48:51,107 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 02:48:51,113 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 02:48:51,113 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 02:48:51,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 193 states have (on average 1.4818652849740932) internal successors, (286), 215 states have internal predecessors, (286), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 32 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-17 02:48:51,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-17 02:48:51,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:51,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:51,145 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:51,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1624233909, now seen corresponding path program 1 times [2021-12-17 02:48:51,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:51,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129415451] [2021-12-17 02:48:51,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:51,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:51,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:51,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129415451] [2021-12-17 02:48:51,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129415451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:51,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:51,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 02:48:51,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554656732] [2021-12-17 02:48:51,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:51,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 02:48:51,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:51,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 02:48:51,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:51,332 INFO L87 Difference]: Start difference. First operand has 238 states, 193 states have (on average 1.4818652849740932) internal successors, (286), 215 states have internal predecessors, (286), 38 states have call successors, (38), 5 states have call predecessors, (38), 5 states have return successors, (38), 32 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:51,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:51,421 INFO L93 Difference]: Finished difference Result 405 states and 624 transitions. [2021-12-17 02:48:51,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 02:48:51,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-17 02:48:51,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:51,438 INFO L225 Difference]: With dead ends: 405 [2021-12-17 02:48:51,438 INFO L226 Difference]: Without dead ends: 231 [2021-12-17 02:48:51,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:51,448 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 193 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:51,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 02:48:51,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-12-17 02:48:51,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2021-12-17 02:48:51,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 188 states have (on average 1.425531914893617) internal successors, (268), 208 states have internal predecessors, (268), 38 states have call successors, (38), 5 states have call predecessors, (38), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-17 02:48:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 325 transitions. [2021-12-17 02:48:51,484 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 325 transitions. Word has length 13 [2021-12-17 02:48:51,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:51,484 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 325 transitions. [2021-12-17 02:48:51,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:51,484 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 325 transitions. [2021-12-17 02:48:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-17 02:48:51,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:51,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:51,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 02:48:51,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:51,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash 23733269, now seen corresponding path program 1 times [2021-12-17 02:48:51,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:51,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952085714] [2021-12-17 02:48:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:51,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:51,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:51,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952085714] [2021-12-17 02:48:51,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952085714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:51,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:51,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 02:48:51,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272724143] [2021-12-17 02:48:51,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:51,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 02:48:51,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 02:48:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:51,535 INFO L87 Difference]: Start difference. First operand 231 states and 325 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:51,624 INFO L93 Difference]: Finished difference Result 477 states and 675 transitions. [2021-12-17 02:48:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 02:48:51,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-17 02:48:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:51,627 INFO L225 Difference]: With dead ends: 477 [2021-12-17 02:48:51,627 INFO L226 Difference]: Without dead ends: 347 [2021-12-17 02:48:51,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:51,631 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 254 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:51,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 592 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-17 02:48:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 328. [2021-12-17 02:48:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 282 states have (on average 1.3652482269503545) internal successors, (385), 287 states have internal predecessors, (385), 38 states have call successors, (38), 9 states have call predecessors, (38), 7 states have return successors, (40), 32 states have call predecessors, (40), 27 states have call successors, (40) [2021-12-17 02:48:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 463 transitions. [2021-12-17 02:48:51,665 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 463 transitions. Word has length 18 [2021-12-17 02:48:51,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:51,665 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 463 transitions. [2021-12-17 02:48:51,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:51,666 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 463 transitions. [2021-12-17 02:48:51,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-17 02:48:51,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:51,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:51,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 02:48:51,667 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:51,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1035240094, now seen corresponding path program 1 times [2021-12-17 02:48:51,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:51,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248547525] [2021-12-17 02:48:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:51,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:51,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:51,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:51,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248547525] [2021-12-17 02:48:51,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248547525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:51,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:51,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 02:48:51,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218624965] [2021-12-17 02:48:51,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:51,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 02:48:51,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:51,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 02:48:51,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:51,742 INFO L87 Difference]: Start difference. First operand 328 states and 463 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:51,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:51,778 INFO L93 Difference]: Finished difference Result 721 states and 1014 transitions. [2021-12-17 02:48:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 02:48:51,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-17 02:48:51,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:51,783 INFO L225 Difference]: With dead ends: 721 [2021-12-17 02:48:51,783 INFO L226 Difference]: Without dead ends: 516 [2021-12-17 02:48:51,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:51,789 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 276 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:51,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 485 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 02:48:51,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-12-17 02:48:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 487. [2021-12-17 02:48:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 424 states have (on average 1.3632075471698113) internal successors, (578), 426 states have internal predecessors, (578), 48 states have call successors, (48), 17 states have call predecessors, (48), 14 states have return successors, (61), 44 states have call predecessors, (61), 39 states have call successors, (61) [2021-12-17 02:48:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 687 transitions. [2021-12-17 02:48:51,814 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 687 transitions. Word has length 19 [2021-12-17 02:48:51,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:51,815 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 687 transitions. [2021-12-17 02:48:51,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:51,815 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 687 transitions. [2021-12-17 02:48:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-17 02:48:51,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:51,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:51,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 02:48:51,820 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:51,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1224032788, now seen corresponding path program 1 times [2021-12-17 02:48:51,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:51,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292025828] [2021-12-17 02:48:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:51,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:51,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:51,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292025828] [2021-12-17 02:48:51,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292025828] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:51,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:51,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 02:48:51,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676704766] [2021-12-17 02:48:51,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:51,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 02:48:51,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:51,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 02:48:51,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:51,876 INFO L87 Difference]: Start difference. First operand 487 states and 687 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:51,905 INFO L93 Difference]: Finished difference Result 578 states and 804 transitions. [2021-12-17 02:48:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 02:48:51,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-17 02:48:51,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:51,908 INFO L225 Difference]: With dead ends: 578 [2021-12-17 02:48:51,908 INFO L226 Difference]: Without dead ends: 558 [2021-12-17 02:48:51,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:51,913 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 277 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:51,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 389 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 02:48:51,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-12-17 02:48:51,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 531. [2021-12-17 02:48:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 462 states have (on average 1.3636363636363635) internal successors, (630), 470 states have internal predecessors, (630), 50 states have call successors, (50), 20 states have call predecessors, (50), 18 states have return successors, (65), 42 states have call predecessors, (65), 42 states have call successors, (65) [2021-12-17 02:48:51,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 745 transitions. [2021-12-17 02:48:51,936 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 745 transitions. Word has length 22 [2021-12-17 02:48:51,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:51,938 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 745 transitions. [2021-12-17 02:48:51,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:51,939 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 745 transitions. [2021-12-17 02:48:51,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-17 02:48:51,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:51,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:51,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 02:48:51,944 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:51,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash -222747689, now seen corresponding path program 1 times [2021-12-17 02:48:51,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:51,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657863161] [2021-12-17 02:48:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:51,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:51,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:51,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657863161] [2021-12-17 02:48:51,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657863161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:51,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:51,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 02:48:51,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527972264] [2021-12-17 02:48:51,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:51,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 02:48:51,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:51,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 02:48:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:51,985 INFO L87 Difference]: Start difference. First operand 531 states and 745 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:52,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:52,047 INFO L93 Difference]: Finished difference Result 816 states and 1148 transitions. [2021-12-17 02:48:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 02:48:52,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-17 02:48:52,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:52,053 INFO L225 Difference]: With dead ends: 816 [2021-12-17 02:48:52,053 INFO L226 Difference]: Without dead ends: 813 [2021-12-17 02:48:52,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:52,054 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 123 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:52,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 671 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 02:48:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2021-12-17 02:48:52,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 622. [2021-12-17 02:48:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 547 states have (on average 1.3711151736745886) internal successors, (750), 558 states have internal predecessors, (750), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-17 02:48:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 874 transitions. [2021-12-17 02:48:52,086 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 874 transitions. Word has length 27 [2021-12-17 02:48:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:52,086 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 874 transitions. [2021-12-17 02:48:52,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 874 transitions. [2021-12-17 02:48:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 02:48:52,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:52,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:52,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 02:48:52,088 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:52,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:52,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1446649383, now seen corresponding path program 1 times [2021-12-17 02:48:52,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:52,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142923739] [2021-12-17 02:48:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:52,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:52,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:52,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:52,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142923739] [2021-12-17 02:48:52,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142923739] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:52,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:52,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 02:48:52,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329699400] [2021-12-17 02:48:52,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:52,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 02:48:52,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:52,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 02:48:52,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 02:48:52,173 INFO L87 Difference]: Start difference. First operand 622 states and 874 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:52,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:52,328 INFO L93 Difference]: Finished difference Result 1097 states and 1516 transitions. [2021-12-17 02:48:52,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 02:48:52,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-17 02:48:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:52,331 INFO L225 Difference]: With dead ends: 1097 [2021-12-17 02:48:52,331 INFO L226 Difference]: Without dead ends: 655 [2021-12-17 02:48:52,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 02:48:52,332 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 518 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:52,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 535 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-12-17 02:48:52,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 613. [2021-12-17 02:48:52,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 538 states have (on average 1.3550185873605949) internal successors, (729), 549 states have internal predecessors, (729), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-17 02:48:52,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 853 transitions. [2021-12-17 02:48:52,352 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 853 transitions. Word has length 28 [2021-12-17 02:48:52,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:52,352 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 853 transitions. [2021-12-17 02:48:52,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 853 transitions. [2021-12-17 02:48:52,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-17 02:48:52,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:52,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:52,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 02:48:52,353 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:52,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:52,353 INFO L85 PathProgramCache]: Analyzing trace with hash -266296252, now seen corresponding path program 1 times [2021-12-17 02:48:52,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:52,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221328239] [2021-12-17 02:48:52,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:52,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:52,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 02:48:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:52,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:52,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:52,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221328239] [2021-12-17 02:48:52,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221328239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:52,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:52,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 02:48:52,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447761391] [2021-12-17 02:48:52,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:52,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 02:48:52,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:52,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 02:48:52,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 02:48:52,400 INFO L87 Difference]: Start difference. First operand 613 states and 853 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:52,512 INFO L93 Difference]: Finished difference Result 666 states and 923 transitions. [2021-12-17 02:48:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 02:48:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-12-17 02:48:52,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:52,516 INFO L225 Difference]: With dead ends: 666 [2021-12-17 02:48:52,516 INFO L226 Difference]: Without dead ends: 661 [2021-12-17 02:48:52,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 02:48:52,517 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 67 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:52,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 743 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:52,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-12-17 02:48:52,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 640. [2021-12-17 02:48:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 565 states have (on average 1.3539823008849559) internal successors, (765), 575 states have internal predecessors, (765), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-17 02:48:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 889 transitions. [2021-12-17 02:48:52,545 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 889 transitions. Word has length 29 [2021-12-17 02:48:52,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:52,546 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 889 transitions. [2021-12-17 02:48:52,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:52,547 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 889 transitions. [2021-12-17 02:48:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 02:48:52,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:52,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:52,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 02:48:52,549 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:52,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:52,549 INFO L85 PathProgramCache]: Analyzing trace with hash 787890455, now seen corresponding path program 1 times [2021-12-17 02:48:52,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:52,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019243221] [2021-12-17 02:48:52,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:52,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:52,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 02:48:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:52,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:52,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019243221] [2021-12-17 02:48:52,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019243221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:52,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:52,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 02:48:52,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483277307] [2021-12-17 02:48:52,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:52,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 02:48:52,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:52,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 02:48:52,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 02:48:52,624 INFO L87 Difference]: Start difference. First operand 640 states and 889 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:52,814 INFO L93 Difference]: Finished difference Result 670 states and 925 transitions. [2021-12-17 02:48:52,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 02:48:52,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-17 02:48:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:52,817 INFO L225 Difference]: With dead ends: 670 [2021-12-17 02:48:52,817 INFO L226 Difference]: Without dead ends: 661 [2021-12-17 02:48:52,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-17 02:48:52,818 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 382 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:52,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 918 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:52,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-12-17 02:48:52,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 640. [2021-12-17 02:48:52,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 565 states have (on average 1.3504424778761062) internal successors, (763), 575 states have internal predecessors, (763), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-17 02:48:52,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 887 transitions. [2021-12-17 02:48:52,844 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 887 transitions. Word has length 30 [2021-12-17 02:48:52,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:52,845 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 887 transitions. [2021-12-17 02:48:52,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:52,845 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 887 transitions. [2021-12-17 02:48:52,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 02:48:52,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:52,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:52,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 02:48:52,846 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:52,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:52,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1995000714, now seen corresponding path program 1 times [2021-12-17 02:48:52,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:52,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451836049] [2021-12-17 02:48:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:52,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:52,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:52,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451836049] [2021-12-17 02:48:52,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451836049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:52,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:52,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 02:48:52,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197611835] [2021-12-17 02:48:52,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:52,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 02:48:52,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:52,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 02:48:52,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:52,879 INFO L87 Difference]: Start difference. First operand 640 states and 887 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:52,932 INFO L93 Difference]: Finished difference Result 655 states and 907 transitions. [2021-12-17 02:48:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 02:48:52,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-17 02:48:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:52,935 INFO L225 Difference]: With dead ends: 655 [2021-12-17 02:48:52,935 INFO L226 Difference]: Without dead ends: 652 [2021-12-17 02:48:52,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:52,938 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 16 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:52,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 553 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 02:48:52,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-12-17 02:48:52,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 651. [2021-12-17 02:48:52,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 576 states have (on average 1.3489583333333333) internal successors, (777), 585 states have internal predecessors, (777), 52 states have call successors, (52), 23 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-17 02:48:52,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 901 transitions. [2021-12-17 02:48:52,965 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 901 transitions. Word has length 30 [2021-12-17 02:48:52,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:52,966 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 901 transitions. [2021-12-17 02:48:52,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:52,966 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 901 transitions. [2021-12-17 02:48:52,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-17 02:48:52,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:52,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:52,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 02:48:52,968 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:52,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:52,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2061053712, now seen corresponding path program 1 times [2021-12-17 02:48:52,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:52,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370668044] [2021-12-17 02:48:52,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:52,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:53,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 02:48:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:53,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:53,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370668044] [2021-12-17 02:48:53,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370668044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:53,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:53,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 02:48:53,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563383157] [2021-12-17 02:48:53,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:53,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 02:48:53,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:53,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 02:48:53,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 02:48:53,045 INFO L87 Difference]: Start difference. First operand 651 states and 901 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:53,218 INFO L93 Difference]: Finished difference Result 681 states and 937 transitions. [2021-12-17 02:48:53,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 02:48:53,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-17 02:48:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:53,221 INFO L225 Difference]: With dead ends: 681 [2021-12-17 02:48:53,221 INFO L226 Difference]: Without dead ends: 672 [2021-12-17 02:48:53,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-17 02:48:53,222 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 381 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:53,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 920 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-12-17 02:48:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 651. [2021-12-17 02:48:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 576 states have (on average 1.3454861111111112) internal successors, (775), 585 states have internal predecessors, (775), 52 states have call successors, (52), 23 states have call predecessors, (52), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-17 02:48:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 899 transitions. [2021-12-17 02:48:53,242 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 899 transitions. Word has length 31 [2021-12-17 02:48:53,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:53,243 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 899 transitions. [2021-12-17 02:48:53,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 899 transitions. [2021-12-17 02:48:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-17 02:48:53,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:53,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:53,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 02:48:53,244 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:53,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:53,244 INFO L85 PathProgramCache]: Analyzing trace with hash -476390944, now seen corresponding path program 1 times [2021-12-17 02:48:53,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:53,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274803764] [2021-12-17 02:48:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:53,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:53,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 02:48:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:53,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:53,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274803764] [2021-12-17 02:48:53,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274803764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:53,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:53,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 02:48:53,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252501284] [2021-12-17 02:48:53,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:53,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 02:48:53,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:53,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 02:48:53,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 02:48:53,271 INFO L87 Difference]: Start difference. First operand 651 states and 899 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:53,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:53,364 INFO L93 Difference]: Finished difference Result 682 states and 936 transitions. [2021-12-17 02:48:53,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 02:48:53,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-17 02:48:53,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:53,367 INFO L225 Difference]: With dead ends: 682 [2021-12-17 02:48:53,367 INFO L226 Difference]: Without dead ends: 666 [2021-12-17 02:48:53,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 02:48:53,367 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 52 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:53,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1083 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:53,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-12-17 02:48:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 649. [2021-12-17 02:48:53,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 575 states have (on average 1.3443478260869566) internal successors, (773), 584 states have internal predecessors, (773), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2021-12-17 02:48:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 895 transitions. [2021-12-17 02:48:53,403 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 895 transitions. Word has length 32 [2021-12-17 02:48:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:53,403 INFO L470 AbstractCegarLoop]: Abstraction has 649 states and 895 transitions. [2021-12-17 02:48:53,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:53,403 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 895 transitions. [2021-12-17 02:48:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-17 02:48:53,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:53,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:53,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 02:48:53,404 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:53,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:53,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1919528250, now seen corresponding path program 1 times [2021-12-17 02:48:53,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:53,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913536179] [2021-12-17 02:48:53,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:53,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:53,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:53,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913536179] [2021-12-17 02:48:53,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913536179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:53,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:53,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 02:48:53,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795025968] [2021-12-17 02:48:53,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:53,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 02:48:53,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:53,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 02:48:53,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:53,429 INFO L87 Difference]: Start difference. First operand 649 states and 895 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:53,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:53,475 INFO L93 Difference]: Finished difference Result 1056 states and 1452 transitions. [2021-12-17 02:48:53,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 02:48:53,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-17 02:48:53,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:53,477 INFO L225 Difference]: With dead ends: 1056 [2021-12-17 02:48:53,477 INFO L226 Difference]: Without dead ends: 657 [2021-12-17 02:48:53,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 02:48:53,478 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 5 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:53,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 564 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 02:48:53,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2021-12-17 02:48:53,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2021-12-17 02:48:53,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 583 states have (on average 1.3447684391080617) internal successors, (784), 592 states have internal predecessors, (784), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2021-12-17 02:48:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 906 transitions. [2021-12-17 02:48:53,499 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 906 transitions. Word has length 34 [2021-12-17 02:48:53,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:53,500 INFO L470 AbstractCegarLoop]: Abstraction has 657 states and 906 transitions. [2021-12-17 02:48:53,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 02:48:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 906 transitions. [2021-12-17 02:48:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-17 02:48:53,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:53,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:53,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 02:48:53,501 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:53,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:53,501 INFO L85 PathProgramCache]: Analyzing trace with hash 197237323, now seen corresponding path program 1 times [2021-12-17 02:48:53,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:53,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563676534] [2021-12-17 02:48:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:53,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 02:48:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:53,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:53,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:53,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563676534] [2021-12-17 02:48:53,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563676534] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:53,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:53,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 02:48:53,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786395860] [2021-12-17 02:48:53,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:53,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 02:48:53,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:53,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 02:48:53,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 02:48:53,532 INFO L87 Difference]: Start difference. First operand 657 states and 906 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:53,692 INFO L93 Difference]: Finished difference Result 741 states and 990 transitions. [2021-12-17 02:48:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 02:48:53,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-12-17 02:48:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:53,695 INFO L225 Difference]: With dead ends: 741 [2021-12-17 02:48:53,695 INFO L226 Difference]: Without dead ends: 482 [2021-12-17 02:48:53,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-17 02:48:53,697 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 385 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:53,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 831 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:53,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-12-17 02:48:53,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 441. [2021-12-17 02:48:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 388 states have (on average 1.3144329896907216) internal successors, (510), 397 states have internal predecessors, (510), 36 states have call successors, (36), 16 states have call predecessors, (36), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-17 02:48:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 585 transitions. [2021-12-17 02:48:53,718 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 585 transitions. Word has length 38 [2021-12-17 02:48:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:53,719 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 585 transitions. [2021-12-17 02:48:53,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 585 transitions. [2021-12-17 02:48:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-17 02:48:53,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:53,720 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:53,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 02:48:53,721 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:53,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:53,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1089851695, now seen corresponding path program 1 times [2021-12-17 02:48:53,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:53,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78034125] [2021-12-17 02:48:53,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:53,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:53,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 02:48:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:53,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:53,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78034125] [2021-12-17 02:48:53,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78034125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:53,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:53,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 02:48:53,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194754567] [2021-12-17 02:48:53,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:53,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 02:48:53,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:53,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 02:48:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 02:48:53,837 INFO L87 Difference]: Start difference. First operand 441 states and 585 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:53,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:53,962 INFO L93 Difference]: Finished difference Result 644 states and 856 transitions. [2021-12-17 02:48:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 02:48:53,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-17 02:48:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:53,964 INFO L225 Difference]: With dead ends: 644 [2021-12-17 02:48:53,964 INFO L226 Difference]: Without dead ends: 436 [2021-12-17 02:48:53,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-17 02:48:53,965 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 74 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:53,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1624 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:53,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-12-17 02:48:53,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 424. [2021-12-17 02:48:53,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 372 states have (on average 1.303763440860215) internal successors, (485), 380 states have internal predecessors, (485), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-17 02:48:53,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 559 transitions. [2021-12-17 02:48:53,980 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 559 transitions. Word has length 41 [2021-12-17 02:48:53,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:53,981 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 559 transitions. [2021-12-17 02:48:53,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:53,981 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 559 transitions. [2021-12-17 02:48:53,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-17 02:48:53,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:53,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:53,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 02:48:53,981 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:53,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:53,982 INFO L85 PathProgramCache]: Analyzing trace with hash 738484898, now seen corresponding path program 1 times [2021-12-17 02:48:53,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:53,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653241711] [2021-12-17 02:48:53,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:53,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:54,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 02:48:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:54,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:54,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653241711] [2021-12-17 02:48:54,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653241711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:54,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:54,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 02:48:54,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376809858] [2021-12-17 02:48:54,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:54,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 02:48:54,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:54,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 02:48:54,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 02:48:54,020 INFO L87 Difference]: Start difference. First operand 424 states and 559 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:54,240 INFO L93 Difference]: Finished difference Result 530 states and 695 transitions. [2021-12-17 02:48:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 02:48:54,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-12-17 02:48:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:54,242 INFO L225 Difference]: With dead ends: 530 [2021-12-17 02:48:54,242 INFO L226 Difference]: Without dead ends: 463 [2021-12-17 02:48:54,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-17 02:48:54,243 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 362 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:54,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1148 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 02:48:54,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-12-17 02:48:54,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 424. [2021-12-17 02:48:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 372 states have (on average 1.2983870967741935) internal successors, (483), 380 states have internal predecessors, (483), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-17 02:48:54,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 557 transitions. [2021-12-17 02:48:54,259 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 557 transitions. Word has length 40 [2021-12-17 02:48:54,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:54,259 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 557 transitions. [2021-12-17 02:48:54,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:54,259 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 557 transitions. [2021-12-17 02:48:54,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-17 02:48:54,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:54,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:54,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 02:48:54,260 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:54,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1983910806, now seen corresponding path program 1 times [2021-12-17 02:48:54,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:54,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880180350] [2021-12-17 02:48:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:54,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:54,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 02:48:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:54,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:54,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880180350] [2021-12-17 02:48:54,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880180350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:54,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:54,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 02:48:54,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424522460] [2021-12-17 02:48:54,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:54,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 02:48:54,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:54,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 02:48:54,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 02:48:54,289 INFO L87 Difference]: Start difference. First operand 424 states and 557 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:54,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:54,388 INFO L93 Difference]: Finished difference Result 456 states and 592 transitions. [2021-12-17 02:48:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 02:48:54,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-17 02:48:54,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:54,390 INFO L225 Difference]: With dead ends: 456 [2021-12-17 02:48:54,390 INFO L226 Difference]: Without dead ends: 434 [2021-12-17 02:48:54,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-17 02:48:54,391 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 80 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:54,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1331 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-12-17 02:48:54,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 420. [2021-12-17 02:48:54,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 370 states have (on average 1.2972972972972974) internal successors, (480), 377 states have internal predecessors, (480), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (38), 28 states have call predecessors, (38), 27 states have call successors, (38) [2021-12-17 02:48:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 552 transitions. [2021-12-17 02:48:54,406 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 552 transitions. Word has length 41 [2021-12-17 02:48:54,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:54,406 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 552 transitions. [2021-12-17 02:48:54,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:54,406 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 552 transitions. [2021-12-17 02:48:54,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-17 02:48:54,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:54,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:54,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 02:48:54,407 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:54,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:54,408 INFO L85 PathProgramCache]: Analyzing trace with hash -13657420, now seen corresponding path program 1 times [2021-12-17 02:48:54,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:54,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375651833] [2021-12-17 02:48:54,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:54,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 02:48:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:54,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:54,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:54,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375651833] [2021-12-17 02:48:54,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375651833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:54,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:54,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 02:48:54,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435993569] [2021-12-17 02:48:54,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:54,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 02:48:54,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:54,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 02:48:54,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 02:48:54,455 INFO L87 Difference]: Start difference. First operand 420 states and 552 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:54,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:54,650 INFO L93 Difference]: Finished difference Result 623 states and 820 transitions. [2021-12-17 02:48:54,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 02:48:54,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-17 02:48:54,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:54,652 INFO L225 Difference]: With dead ends: 623 [2021-12-17 02:48:54,652 INFO L226 Difference]: Without dead ends: 432 [2021-12-17 02:48:54,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-17 02:48:54,653 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 321 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:54,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 915 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-12-17 02:48:54,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 420. [2021-12-17 02:48:54,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 370 states have (on average 1.2945945945945947) internal successors, (479), 377 states have internal predecessors, (479), 34 states have call successors, (34), 15 states have call predecessors, (34), 15 states have return successors, (38), 28 states have call predecessors, (38), 27 states have call successors, (38) [2021-12-17 02:48:54,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 551 transitions. [2021-12-17 02:48:54,667 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 551 transitions. Word has length 43 [2021-12-17 02:48:54,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:54,667 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 551 transitions. [2021-12-17 02:48:54,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:54,668 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 551 transitions. [2021-12-17 02:48:54,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-17 02:48:54,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:54,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:54,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 02:48:54,668 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1480101209, now seen corresponding path program 1 times [2021-12-17 02:48:54,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:54,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506353975] [2021-12-17 02:48:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:54,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:54,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 02:48:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:54,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:54,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506353975] [2021-12-17 02:48:54,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506353975] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:54,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:54,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 02:48:54,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694755540] [2021-12-17 02:48:54,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:54,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 02:48:54,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:54,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 02:48:54,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 02:48:54,707 INFO L87 Difference]: Start difference. First operand 420 states and 551 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:54,870 INFO L93 Difference]: Finished difference Result 702 states and 930 transitions. [2021-12-17 02:48:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 02:48:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-12-17 02:48:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:54,872 INFO L225 Difference]: With dead ends: 702 [2021-12-17 02:48:54,872 INFO L226 Difference]: Without dead ends: 439 [2021-12-17 02:48:54,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-17 02:48:54,873 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 340 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:54,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [345 Valid, 929 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-12-17 02:48:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 412. [2021-12-17 02:48:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 363 states have (on average 1.2865013774104683) internal successors, (467), 370 states have internal predecessors, (467), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (37), 27 states have call predecessors, (37), 27 states have call successors, (37) [2021-12-17 02:48:54,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 538 transitions. [2021-12-17 02:48:54,888 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 538 transitions. Word has length 42 [2021-12-17 02:48:54,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:54,889 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 538 transitions. [2021-12-17 02:48:54,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:54,889 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 538 transitions. [2021-12-17 02:48:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-17 02:48:54,889 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:54,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:54,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 02:48:54,889 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:54,890 INFO L85 PathProgramCache]: Analyzing trace with hash -2093894745, now seen corresponding path program 1 times [2021-12-17 02:48:54,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:54,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927254690] [2021-12-17 02:48:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:54,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:54,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 02:48:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:54,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:54,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927254690] [2021-12-17 02:48:54,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927254690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:54,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:54,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 02:48:54,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588306636] [2021-12-17 02:48:54,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:54,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 02:48:54,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:54,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 02:48:54,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 02:48:54,913 INFO L87 Difference]: Start difference. First operand 412 states and 538 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:55,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:55,005 INFO L93 Difference]: Finished difference Result 443 states and 571 transitions. [2021-12-17 02:48:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 02:48:55,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-12-17 02:48:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:55,007 INFO L225 Difference]: With dead ends: 443 [2021-12-17 02:48:55,007 INFO L226 Difference]: Without dead ends: 424 [2021-12-17 02:48:55,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 02:48:55,008 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 83 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:55,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 733 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:55,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-17 02:48:55,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 406. [2021-12-17 02:48:55,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 358 states have (on average 1.270949720670391) internal successors, (455), 364 states have internal predecessors, (455), 33 states have call successors, (33), 15 states have call predecessors, (33), 14 states have return successors, (37), 27 states have call predecessors, (37), 27 states have call successors, (37) [2021-12-17 02:48:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 525 transitions. [2021-12-17 02:48:55,032 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 525 transitions. Word has length 42 [2021-12-17 02:48:55,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:55,032 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 525 transitions. [2021-12-17 02:48:55,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:55,032 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 525 transitions. [2021-12-17 02:48:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-17 02:48:55,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:55,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:55,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 02:48:55,033 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:55,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:55,033 INFO L85 PathProgramCache]: Analyzing trace with hash -33087980, now seen corresponding path program 1 times [2021-12-17 02:48:55,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:55,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703467814] [2021-12-17 02:48:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:55,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 02:48:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:55,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:55,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:55,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703467814] [2021-12-17 02:48:55,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703467814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:55,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:55,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 02:48:55,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483853854] [2021-12-17 02:48:55,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:55,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 02:48:55,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:55,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 02:48:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 02:48:55,080 INFO L87 Difference]: Start difference. First operand 406 states and 525 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:55,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:55,241 INFO L93 Difference]: Finished difference Result 451 states and 580 transitions. [2021-12-17 02:48:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 02:48:55,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-17 02:48:55,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:55,243 INFO L225 Difference]: With dead ends: 451 [2021-12-17 02:48:55,243 INFO L226 Difference]: Without dead ends: 447 [2021-12-17 02:48:55,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-17 02:48:55,244 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 228 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:55,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 1634 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-17 02:48:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 421. [2021-12-17 02:48:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 372 states have (on average 1.260752688172043) internal successors, (469), 378 states have internal predecessors, (469), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (43), 28 states have call predecessors, (43), 27 states have call successors, (43) [2021-12-17 02:48:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 545 transitions. [2021-12-17 02:48:55,259 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 545 transitions. Word has length 43 [2021-12-17 02:48:55,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:55,259 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 545 transitions. [2021-12-17 02:48:55,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 545 transitions. [2021-12-17 02:48:55,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-17 02:48:55,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:55,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:55,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 02:48:55,260 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:55,261 INFO L85 PathProgramCache]: Analyzing trace with hash -32811150, now seen corresponding path program 1 times [2021-12-17 02:48:55,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:55,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457524636] [2021-12-17 02:48:55,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:55,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 02:48:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:55,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:55,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457524636] [2021-12-17 02:48:55,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457524636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:55,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:55,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 02:48:55,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808166224] [2021-12-17 02:48:55,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:55,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 02:48:55,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:55,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 02:48:55,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 02:48:55,300 INFO L87 Difference]: Start difference. First operand 421 states and 545 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:55,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:55,470 INFO L93 Difference]: Finished difference Result 447 states and 573 transitions. [2021-12-17 02:48:55,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 02:48:55,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-17 02:48:55,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:55,471 INFO L225 Difference]: With dead ends: 447 [2021-12-17 02:48:55,472 INFO L226 Difference]: Without dead ends: 434 [2021-12-17 02:48:55,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 02:48:55,472 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 49 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:55,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1712 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-12-17 02:48:55,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 418. [2021-12-17 02:48:55,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 369 states have (on average 1.2628726287262872) internal successors, (466), 376 states have internal predecessors, (466), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (42), 27 states have call predecessors, (42), 27 states have call successors, (42) [2021-12-17 02:48:55,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 541 transitions. [2021-12-17 02:48:55,496 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 541 transitions. Word has length 43 [2021-12-17 02:48:55,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:55,497 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 541 transitions. [2021-12-17 02:48:55,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:55,497 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 541 transitions. [2021-12-17 02:48:55,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-17 02:48:55,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:55,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:55,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 02:48:55,498 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:55,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:55,499 INFO L85 PathProgramCache]: Analyzing trace with hash -97902919, now seen corresponding path program 1 times [2021-12-17 02:48:55,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:55,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685906705] [2021-12-17 02:48:55,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:55,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:55,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 02:48:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:55,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:55,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685906705] [2021-12-17 02:48:55,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685906705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:55,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:55,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 02:48:55,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716432458] [2021-12-17 02:48:55,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:55,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 02:48:55,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 02:48:55,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 02:48:55,522 INFO L87 Difference]: Start difference. First operand 418 states and 541 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:55,605 INFO L93 Difference]: Finished difference Result 455 states and 582 transitions. [2021-12-17 02:48:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 02:48:55,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-17 02:48:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:55,608 INFO L225 Difference]: With dead ends: 455 [2021-12-17 02:48:55,608 INFO L226 Difference]: Without dead ends: 432 [2021-12-17 02:48:55,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 02:48:55,609 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 95 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:55,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 824 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:55,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-12-17 02:48:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 417. [2021-12-17 02:48:55,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 368 states have (on average 1.25) internal successors, (460), 375 states have internal predecessors, (460), 33 states have call successors, (33), 15 states have call predecessors, (33), 15 states have return successors, (42), 27 states have call predecessors, (42), 27 states have call successors, (42) [2021-12-17 02:48:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 535 transitions. [2021-12-17 02:48:55,625 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 535 transitions. Word has length 43 [2021-12-17 02:48:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:55,625 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 535 transitions. [2021-12-17 02:48:55,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 535 transitions. [2021-12-17 02:48:55,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-17 02:48:55,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:55,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:55,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 02:48:55,626 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:55,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:55,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1182842798, now seen corresponding path program 1 times [2021-12-17 02:48:55,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:55,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962735310] [2021-12-17 02:48:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:55,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-17 02:48:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:55,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:55,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962735310] [2021-12-17 02:48:55,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962735310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:55,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:55,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 02:48:55,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979443248] [2021-12-17 02:48:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:55,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 02:48:55,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:55,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 02:48:55,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 02:48:55,666 INFO L87 Difference]: Start difference. First operand 417 states and 535 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:55,859 INFO L93 Difference]: Finished difference Result 440 states and 558 transitions. [2021-12-17 02:48:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 02:48:55,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-12-17 02:48:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:55,861 INFO L225 Difference]: With dead ends: 440 [2021-12-17 02:48:55,861 INFO L226 Difference]: Without dead ends: 424 [2021-12-17 02:48:55,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-17 02:48:55,862 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 389 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:55,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 878 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:55,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-17 02:48:55,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 401. [2021-12-17 02:48:55,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 354 states have (on average 1.2542372881355932) internal successors, (444), 360 states have internal predecessors, (444), 32 states have call successors, (32), 15 states have call predecessors, (32), 14 states have return successors, (36), 26 states have call predecessors, (36), 26 states have call successors, (36) [2021-12-17 02:48:55,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 512 transitions. [2021-12-17 02:48:55,877 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 512 transitions. Word has length 44 [2021-12-17 02:48:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:55,877 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 512 transitions. [2021-12-17 02:48:55,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 512 transitions. [2021-12-17 02:48:55,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-17 02:48:55,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:55,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:55,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 02:48:55,879 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:55,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:55,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1424622961, now seen corresponding path program 1 times [2021-12-17 02:48:55,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:55,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146093660] [2021-12-17 02:48:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:55,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:55,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 02:48:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:55,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:55,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146093660] [2021-12-17 02:48:55,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146093660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:55,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:55,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 02:48:55,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598663622] [2021-12-17 02:48:55,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:55,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 02:48:55,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:55,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 02:48:55,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 02:48:55,911 INFO L87 Difference]: Start difference. First operand 401 states and 512 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:56,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:56,034 INFO L93 Difference]: Finished difference Result 680 states and 870 transitions. [2021-12-17 02:48:56,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 02:48:56,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-17 02:48:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:56,036 INFO L225 Difference]: With dead ends: 680 [2021-12-17 02:48:56,036 INFO L226 Difference]: Without dead ends: 492 [2021-12-17 02:48:56,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 02:48:56,037 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 159 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:56,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 768 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-12-17 02:48:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 454. [2021-12-17 02:48:56,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 402 states have (on average 1.256218905472637) internal successors, (505), 407 states have internal predecessors, (505), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (42), 30 states have call predecessors, (42), 29 states have call successors, (42) [2021-12-17 02:48:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 581 transitions. [2021-12-17 02:48:56,054 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 581 transitions. Word has length 46 [2021-12-17 02:48:56,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:56,054 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 581 transitions. [2021-12-17 02:48:56,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 581 transitions. [2021-12-17 02:48:56,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-17 02:48:56,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:56,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:56,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 02:48:56,055 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:56,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:56,055 INFO L85 PathProgramCache]: Analyzing trace with hash -910194117, now seen corresponding path program 1 times [2021-12-17 02:48:56,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:56,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894343495] [2021-12-17 02:48:56,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:56,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:56,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 02:48:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:56,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:56,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:56,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894343495] [2021-12-17 02:48:56,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894343495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:56,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:56,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 02:48:56,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722187229] [2021-12-17 02:48:56,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:56,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 02:48:56,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:56,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 02:48:56,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 02:48:56,087 INFO L87 Difference]: Start difference. First operand 454 states and 581 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:56,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:56,171 INFO L93 Difference]: Finished difference Result 484 states and 613 transitions. [2021-12-17 02:48:56,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 02:48:56,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-12-17 02:48:56,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:56,172 INFO L225 Difference]: With dead ends: 484 [2021-12-17 02:48:56,173 INFO L226 Difference]: Without dead ends: 461 [2021-12-17 02:48:56,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 02:48:56,173 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 95 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:56,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1062 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:56,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-12-17 02:48:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 436. [2021-12-17 02:48:56,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 386 states have (on average 1.261658031088083) internal successors, (487), 391 states have internal predecessors, (487), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2021-12-17 02:48:56,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 561 transitions. [2021-12-17 02:48:56,190 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 561 transitions. Word has length 45 [2021-12-17 02:48:56,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:56,190 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 561 transitions. [2021-12-17 02:48:56,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:56,190 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 561 transitions. [2021-12-17 02:48:56,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-17 02:48:56,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:56,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:56,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 02:48:56,191 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:56,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:56,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1973534822, now seen corresponding path program 1 times [2021-12-17 02:48:56,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:56,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918204044] [2021-12-17 02:48:56,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:56,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 02:48:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:56,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:56,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918204044] [2021-12-17 02:48:56,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918204044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:56,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:56,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 02:48:56,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939986915] [2021-12-17 02:48:56,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:56,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 02:48:56,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:56,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 02:48:56,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 02:48:56,244 INFO L87 Difference]: Start difference. First operand 436 states and 561 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:56,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:56,374 INFO L93 Difference]: Finished difference Result 698 states and 899 transitions. [2021-12-17 02:48:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 02:48:56,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-17 02:48:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:56,376 INFO L225 Difference]: With dead ends: 698 [2021-12-17 02:48:56,376 INFO L226 Difference]: Without dead ends: 477 [2021-12-17 02:48:56,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 02:48:56,377 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 52 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:56,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1662 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:56,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-12-17 02:48:56,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 436. [2021-12-17 02:48:56,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 386 states have (on average 1.2564766839378239) internal successors, (485), 391 states have internal predecessors, (485), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2021-12-17 02:48:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 559 transitions. [2021-12-17 02:48:56,400 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 559 transitions. Word has length 48 [2021-12-17 02:48:56,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:56,400 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 559 transitions. [2021-12-17 02:48:56,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 559 transitions. [2021-12-17 02:48:56,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-17 02:48:56,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:56,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:56,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 02:48:56,401 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:56,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:56,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1519307082, now seen corresponding path program 1 times [2021-12-17 02:48:56,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:56,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7843481] [2021-12-17 02:48:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:56,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:56,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-17 02:48:56,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:56,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:56,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7843481] [2021-12-17 02:48:56,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7843481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:56,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:56,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 02:48:56,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190489372] [2021-12-17 02:48:56,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:56,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 02:48:56,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:56,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 02:48:56,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 02:48:56,444 INFO L87 Difference]: Start difference. First operand 436 states and 559 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:56,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:56,630 INFO L93 Difference]: Finished difference Result 463 states and 588 transitions. [2021-12-17 02:48:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 02:48:56,630 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-17 02:48:56,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:56,632 INFO L225 Difference]: With dead ends: 463 [2021-12-17 02:48:56,632 INFO L226 Difference]: Without dead ends: 444 [2021-12-17 02:48:56,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-17 02:48:56,632 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 53 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:56,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1866 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:56,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-12-17 02:48:56,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 432. [2021-12-17 02:48:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 383 states have (on average 1.2558746736292428) internal successors, (481), 388 states have internal predecessors, (481), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (40), 28 states have call predecessors, (40), 27 states have call successors, (40) [2021-12-17 02:48:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 553 transitions. [2021-12-17 02:48:56,648 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 553 transitions. Word has length 48 [2021-12-17 02:48:56,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:56,649 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 553 transitions. [2021-12-17 02:48:56,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 553 transitions. [2021-12-17 02:48:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-17 02:48:56,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:56,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:56,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 02:48:56,650 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash 883777374, now seen corresponding path program 1 times [2021-12-17 02:48:56,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:56,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155975744] [2021-12-17 02:48:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:56,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:56,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 02:48:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:56,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:56,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155975744] [2021-12-17 02:48:56,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155975744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:56,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:56,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 02:48:56,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682117670] [2021-12-17 02:48:56,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:56,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 02:48:56,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 02:48:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 02:48:56,692 INFO L87 Difference]: Start difference. First operand 432 states and 553 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:56,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:56,872 INFO L93 Difference]: Finished difference Result 459 states and 582 transitions. [2021-12-17 02:48:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 02:48:56,872 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-17 02:48:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:56,874 INFO L225 Difference]: With dead ends: 459 [2021-12-17 02:48:56,874 INFO L226 Difference]: Without dead ends: 439 [2021-12-17 02:48:56,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-17 02:48:56,874 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 53 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:56,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1828 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-12-17 02:48:56,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 427. [2021-12-17 02:48:56,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 379 states have (on average 1.2559366754617414) internal successors, (476), 384 states have internal predecessors, (476), 31 states have call successors, (31), 16 states have call predecessors, (31), 16 states have return successors, (39), 27 states have call predecessors, (39), 26 states have call successors, (39) [2021-12-17 02:48:56,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 546 transitions. [2021-12-17 02:48:56,899 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 546 transitions. Word has length 49 [2021-12-17 02:48:56,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:56,899 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 546 transitions. [2021-12-17 02:48:56,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:56,899 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 546 transitions. [2021-12-17 02:48:56,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-17 02:48:56,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:56,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:56,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 02:48:56,901 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:56,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:56,901 INFO L85 PathProgramCache]: Analyzing trace with hash 164785177, now seen corresponding path program 1 times [2021-12-17 02:48:56,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:56,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555168731] [2021-12-17 02:48:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:56,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:56,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 02:48:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:56,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:56,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555168731] [2021-12-17 02:48:56,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555168731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:56,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:56,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 02:48:56,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576798267] [2021-12-17 02:48:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:56,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 02:48:56,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:56,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 02:48:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 02:48:56,949 INFO L87 Difference]: Start difference. First operand 427 states and 546 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:57,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:57,124 INFO L93 Difference]: Finished difference Result 454 states and 575 transitions. [2021-12-17 02:48:57,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 02:48:57,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-17 02:48:57,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:57,126 INFO L225 Difference]: With dead ends: 454 [2021-12-17 02:48:57,126 INFO L226 Difference]: Without dead ends: 435 [2021-12-17 02:48:57,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-17 02:48:57,129 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 53 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:57,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1782 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-12-17 02:48:57,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 423. [2021-12-17 02:48:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 376 states have (on average 1.2553191489361701) internal successors, (472), 381 states have internal predecessors, (472), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2021-12-17 02:48:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 540 transitions. [2021-12-17 02:48:57,146 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 540 transitions. Word has length 49 [2021-12-17 02:48:57,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:57,146 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 540 transitions. [2021-12-17 02:48:57,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:57,146 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 540 transitions. [2021-12-17 02:48:57,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-17 02:48:57,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:57,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:57,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 02:48:57,147 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:57,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:57,148 INFO L85 PathProgramCache]: Analyzing trace with hash -48892372, now seen corresponding path program 1 times [2021-12-17 02:48:57,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:57,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866205773] [2021-12-17 02:48:57,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:57,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-17 02:48:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:57,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:57,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866205773] [2021-12-17 02:48:57,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866205773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:57,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:57,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 02:48:57,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792493900] [2021-12-17 02:48:57,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:57,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 02:48:57,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:57,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 02:48:57,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 02:48:57,224 INFO L87 Difference]: Start difference. First operand 423 states and 540 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:57,380 INFO L93 Difference]: Finished difference Result 777 states and 1007 transitions. [2021-12-17 02:48:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 02:48:57,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-17 02:48:57,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:57,383 INFO L225 Difference]: With dead ends: 777 [2021-12-17 02:48:57,383 INFO L226 Difference]: Without dead ends: 567 [2021-12-17 02:48:57,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 02:48:57,384 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 104 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:57,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1850 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-12-17 02:48:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 423. [2021-12-17 02:48:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 376 states have (on average 1.252659574468085) internal successors, (471), 381 states have internal predecessors, (471), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2021-12-17 02:48:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 539 transitions. [2021-12-17 02:48:57,411 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 539 transitions. Word has length 51 [2021-12-17 02:48:57,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:57,411 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 539 transitions. [2021-12-17 02:48:57,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:57,411 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 539 transitions. [2021-12-17 02:48:57,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-17 02:48:57,412 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:57,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:57,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 02:48:57,413 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:57,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:57,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1189199768, now seen corresponding path program 1 times [2021-12-17 02:48:57,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:57,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657607539] [2021-12-17 02:48:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:57,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-17 02:48:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:57,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:57,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657607539] [2021-12-17 02:48:57,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657607539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:57,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:57,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 02:48:57,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736340159] [2021-12-17 02:48:57,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:57,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 02:48:57,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:57,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 02:48:57,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 02:48:57,469 INFO L87 Difference]: Start difference. First operand 423 states and 539 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:57,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:57,652 INFO L93 Difference]: Finished difference Result 450 states and 568 transitions. [2021-12-17 02:48:57,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 02:48:57,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-17 02:48:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:57,653 INFO L225 Difference]: With dead ends: 450 [2021-12-17 02:48:57,653 INFO L226 Difference]: Without dead ends: 413 [2021-12-17 02:48:57,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-17 02:48:57,654 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 61 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:57,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1786 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:57,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-17 02:48:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 401. [2021-12-17 02:48:57,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 357 states have (on average 1.2521008403361344) internal successors, (447), 362 states have internal predecessors, (447), 28 states have call successors, (28), 15 states have call predecessors, (28), 15 states have return successors, (36), 24 states have call predecessors, (36), 23 states have call successors, (36) [2021-12-17 02:48:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 511 transitions. [2021-12-17 02:48:57,669 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 511 transitions. Word has length 53 [2021-12-17 02:48:57,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:57,669 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 511 transitions. [2021-12-17 02:48:57,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 02:48:57,670 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 511 transitions. [2021-12-17 02:48:57,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-17 02:48:57,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:57,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:57,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 02:48:57,670 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:57,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:57,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1140585270, now seen corresponding path program 1 times [2021-12-17 02:48:57,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:57,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357864018] [2021-12-17 02:48:57,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:57,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 02:48:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 02:48:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:57,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:57,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357864018] [2021-12-17 02:48:57,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357864018] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:57,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:57,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 02:48:57,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355670974] [2021-12-17 02:48:57,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:57,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 02:48:57,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:57,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 02:48:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-17 02:48:57,713 INFO L87 Difference]: Start difference. First operand 401 states and 511 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 02:48:57,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:57,889 INFO L93 Difference]: Finished difference Result 619 states and 785 transitions. [2021-12-17 02:48:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 02:48:57,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 59 [2021-12-17 02:48:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:57,891 INFO L225 Difference]: With dead ends: 619 [2021-12-17 02:48:57,891 INFO L226 Difference]: Without dead ends: 388 [2021-12-17 02:48:57,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-17 02:48:57,892 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 132 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:57,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1401 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-12-17 02:48:57,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 368. [2021-12-17 02:48:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 329 states have (on average 1.2522796352583587) internal successors, (412), 333 states have internal predecessors, (412), 25 states have call successors, (25), 14 states have call predecessors, (25), 13 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2021-12-17 02:48:57,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 461 transitions. [2021-12-17 02:48:57,906 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 461 transitions. Word has length 59 [2021-12-17 02:48:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:57,906 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 461 transitions. [2021-12-17 02:48:57,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 02:48:57,906 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 461 transitions. [2021-12-17 02:48:57,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-17 02:48:57,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:57,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:57,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 02:48:57,907 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:57,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash 732659986, now seen corresponding path program 1 times [2021-12-17 02:48:57,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:57,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411130161] [2021-12-17 02:48:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:57,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 02:48:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:57,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-17 02:48:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:57,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:57,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411130161] [2021-12-17 02:48:57,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411130161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:57,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:57,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 02:48:57,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518254413] [2021-12-17 02:48:57,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:57,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 02:48:57,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:57,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 02:48:57,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-17 02:48:57,953 INFO L87 Difference]: Start difference. First operand 368 states and 461 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 02:48:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:58,155 INFO L93 Difference]: Finished difference Result 760 states and 930 transitions. [2021-12-17 02:48:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 02:48:58,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-12-17 02:48:58,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:58,156 INFO L225 Difference]: With dead ends: 760 [2021-12-17 02:48:58,156 INFO L226 Difference]: Without dead ends: 481 [2021-12-17 02:48:58,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-17 02:48:58,157 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 378 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:58,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 985 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 02:48:58,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-12-17 02:48:58,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 462. [2021-12-17 02:48:58,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 413 states have (on average 1.2397094430992737) internal successors, (512), 419 states have internal predecessors, (512), 27 states have call successors, (27), 20 states have call predecessors, (27), 21 states have return successors, (27), 23 states have call predecessors, (27), 23 states have call successors, (27) [2021-12-17 02:48:58,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 566 transitions. [2021-12-17 02:48:58,176 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 566 transitions. Word has length 61 [2021-12-17 02:48:58,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:58,176 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 566 transitions. [2021-12-17 02:48:58,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 02:48:58,176 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 566 transitions. [2021-12-17 02:48:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-17 02:48:58,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:58,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:58,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 02:48:58,177 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:58,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1387725979, now seen corresponding path program 1 times [2021-12-17 02:48:58,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:58,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227269384] [2021-12-17 02:48:58,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:58,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:58,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-17 02:48:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:58,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-17 02:48:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:58,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:58,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227269384] [2021-12-17 02:48:58,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227269384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:58,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:58,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 02:48:58,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19259837] [2021-12-17 02:48:58,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:58,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 02:48:58,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:58,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 02:48:58,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 02:48:58,230 INFO L87 Difference]: Start difference. First operand 462 states and 566 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 02:48:58,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:58,449 INFO L93 Difference]: Finished difference Result 464 states and 567 transitions. [2021-12-17 02:48:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 02:48:58,449 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2021-12-17 02:48:58,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:58,451 INFO L225 Difference]: With dead ends: 464 [2021-12-17 02:48:58,451 INFO L226 Difference]: Without dead ends: 413 [2021-12-17 02:48:58,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-17 02:48:58,451 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 103 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:58,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1613 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 02:48:58,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-17 02:48:58,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2021-12-17 02:48:58,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 369 states have (on average 1.2439024390243902) internal successors, (459), 374 states have internal predecessors, (459), 24 states have call successors, (24), 18 states have call predecessors, (24), 19 states have return successors, (25), 21 states have call predecessors, (25), 21 states have call successors, (25) [2021-12-17 02:48:58,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 508 transitions. [2021-12-17 02:48:58,468 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 508 transitions. Word has length 62 [2021-12-17 02:48:58,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:58,468 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 508 transitions. [2021-12-17 02:48:58,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 02:48:58,468 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 508 transitions. [2021-12-17 02:48:58,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 02:48:58,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:58,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:58,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 02:48:58,469 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:58,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:58,469 INFO L85 PathProgramCache]: Analyzing trace with hash -642482331, now seen corresponding path program 1 times [2021-12-17 02:48:58,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:58,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809213105] [2021-12-17 02:48:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:58,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:58,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 02:48:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:58,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-17 02:48:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:58,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:58,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809213105] [2021-12-17 02:48:58,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809213105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:58,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:58,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 02:48:58,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409332382] [2021-12-17 02:48:58,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:58,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 02:48:58,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:58,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 02:48:58,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 02:48:58,530 INFO L87 Difference]: Start difference. First operand 413 states and 508 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 02:48:58,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:58,724 INFO L93 Difference]: Finished difference Result 454 states and 553 transitions. [2021-12-17 02:48:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 02:48:58,725 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2021-12-17 02:48:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:58,726 INFO L225 Difference]: With dead ends: 454 [2021-12-17 02:48:58,726 INFO L226 Difference]: Without dead ends: 435 [2021-12-17 02:48:58,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-17 02:48:58,727 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 308 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1568 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:58,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 1568 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-12-17 02:48:58,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 421. [2021-12-17 02:48:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 376 states have (on average 1.2393617021276595) internal successors, (466), 381 states have internal predecessors, (466), 24 states have call successors, (24), 18 states have call predecessors, (24), 20 states have return successors, (27), 22 states have call predecessors, (27), 21 states have call successors, (27) [2021-12-17 02:48:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 517 transitions. [2021-12-17 02:48:58,752 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 517 transitions. Word has length 63 [2021-12-17 02:48:58,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:58,752 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 517 transitions. [2021-12-17 02:48:58,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 02:48:58,752 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 517 transitions. [2021-12-17 02:48:58,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-17 02:48:58,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:58,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:58,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 02:48:58,754 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:58,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:58,755 INFO L85 PathProgramCache]: Analyzing trace with hash -163812513, now seen corresponding path program 1 times [2021-12-17 02:48:58,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:58,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348807394] [2021-12-17 02:48:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:58,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:58,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-17 02:48:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-17 02:48:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 02:48:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 02:48:58,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 02:48:58,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348807394] [2021-12-17 02:48:58,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348807394] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 02:48:58,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 02:48:58,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 02:48:58,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588910462] [2021-12-17 02:48:58,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 02:48:58,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 02:48:58,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 02:48:58,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 02:48:58,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-17 02:48:58,819 INFO L87 Difference]: Start difference. First operand 421 states and 517 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 02:48:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 02:48:58,977 INFO L93 Difference]: Finished difference Result 454 states and 552 transitions. [2021-12-17 02:48:58,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 02:48:58,981 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2021-12-17 02:48:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 02:48:58,983 INFO L225 Difference]: With dead ends: 454 [2021-12-17 02:48:58,983 INFO L226 Difference]: Without dead ends: 435 [2021-12-17 02:48:58,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-17 02:48:58,984 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 94 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 1762 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 02:48:58,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 1762 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 02:48:58,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-12-17 02:48:58,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 413. [2021-12-17 02:48:59,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 369 states have (on average 1.2411924119241193) internal successors, (458), 374 states have internal predecessors, (458), 24 states have call successors, (24), 18 states have call predecessors, (24), 19 states have return successors, (25), 21 states have call predecessors, (25), 21 states have call successors, (25) [2021-12-17 02:48:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 507 transitions. [2021-12-17 02:48:59,000 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 507 transitions. Word has length 64 [2021-12-17 02:48:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 02:48:59,000 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 507 transitions. [2021-12-17 02:48:59,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 02:48:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 507 transitions. [2021-12-17 02:48:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-17 02:48:59,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 02:48:59,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:59,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 02:48:59,003 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 02:48:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 02:48:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash 335595526, now seen corresponding path program 1 times [2021-12-17 02:48:59,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 02:48:59,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824539985] [2021-12-17 02:48:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 02:48:59,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 02:48:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 02:48:59,013 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 02:48:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 02:48:59,060 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 02:48:59,060 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 02:48:59,060 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 02:48:59,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 02:48:59,063 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 02:48:59,065 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 02:48:59,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 02:48:59 BoogieIcfgContainer [2021-12-17 02:48:59,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 02:48:59,123 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 02:48:59,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 02:48:59,123 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 02:48:59,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 02:48:51" (3/4) ... [2021-12-17 02:48:59,124 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-17 02:48:59,179 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 02:48:59,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 02:48:59,179 INFO L158 Benchmark]: Toolchain (without parser) took 9253.39ms. Allocated memory was 96.5MB in the beginning and 287.3MB in the end (delta: 190.8MB). Free memory was 68.3MB in the beginning and 136.6MB in the end (delta: -68.3MB). Peak memory consumption was 120.9MB. Max. memory is 16.1GB. [2021-12-17 02:48:59,179 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 96.5MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 02:48:59,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 290.51ms. Allocated memory was 96.5MB in the beginning and 136.3MB in the end (delta: 39.8MB). Free memory was 68.3MB in the beginning and 103.4MB in the end (delta: -35.1MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2021-12-17 02:48:59,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.04ms. Allocated memory is still 136.3MB. Free memory was 103.4MB in the beginning and 98.4MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-17 02:48:59,179 INFO L158 Benchmark]: Boogie Preprocessor took 44.73ms. Allocated memory is still 136.3MB. Free memory was 98.4MB in the beginning and 94.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-17 02:48:59,180 INFO L158 Benchmark]: RCFGBuilder took 726.26ms. Allocated memory is still 136.3MB. Free memory was 94.2MB in the beginning and 53.1MB in the end (delta: 41.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2021-12-17 02:48:59,180 INFO L158 Benchmark]: TraceAbstraction took 8077.36ms. Allocated memory was 136.3MB in the beginning and 287.3MB in the end (delta: 151.0MB). Free memory was 52.9MB in the beginning and 155.5MB in the end (delta: -102.6MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. [2021-12-17 02:48:59,180 INFO L158 Benchmark]: Witness Printer took 55.90ms. Allocated memory is still 287.3MB. Free memory was 155.5MB in the beginning and 136.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-17 02:48:59,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 96.5MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 290.51ms. Allocated memory was 96.5MB in the beginning and 136.3MB in the end (delta: 39.8MB). Free memory was 68.3MB in the beginning and 103.4MB in the end (delta: -35.1MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.04ms. Allocated memory is still 136.3MB. Free memory was 103.4MB in the beginning and 98.4MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.73ms. Allocated memory is still 136.3MB. Free memory was 98.4MB in the beginning and 94.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 726.26ms. Allocated memory is still 136.3MB. Free memory was 94.2MB in the beginning and 53.1MB in the end (delta: 41.1MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8077.36ms. Allocated memory was 136.3MB in the beginning and 287.3MB in the end (delta: 151.0MB). Free memory was 52.9MB in the beginning and 155.5MB in the end (delta: -102.6MB). Peak memory consumption was 48.4MB. Max. memory is 16.1GB. * Witness Printer took 55.90ms. Allocated memory is still 287.3MB. Free memory was 155.5MB in the beginning and 136.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 65]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L36] int FloppyThread ; [L37] int KernelMode ; [L38] int Suspended ; [L39] int Executive ; [L40] int DiskController ; [L41] int FloppyDiskPeripheral ; [L42] int FlConfigCallBack ; [L43] int MaximumInterfaceType ; [L44] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L45] int myStatus ; [L46] int s ; [L47] int UNLOADED ; [L48] int NP ; [L49] int DC ; [L50] int SKIP1 ; [L51] int SKIP2 ; [L52] int MPR1 ; [L53] int MPR3 ; [L54] int IPC ; [L55] int pended ; [L56] int compRegistered ; [L57] int lowerDriverReturn ; [L58] int setEventCalled ; [L59] int customIrp ; [L91] int PagingReferenceCount = 0; [L92] int PagingMutex = 0; VAL [compRegistered=0, customIrp=0, DC=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=0, MPR3=0, myStatus=0, NP=0, PagingMutex=0, PagingReferenceCount=0, pended=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L671] int status ; [L672] int irp = __VERIFIER_nondet_int() ; [L673] int pirp ; [L674] int pirp__IoStatus__Status ; [L675] int irp_choice = __VERIFIER_nondet_int() ; [L676] int devobj = __VERIFIER_nondet_int() ; [L677] int __cil_tmp8 ; [L679] FloppyThread = 0 [L680] KernelMode = 0 [L681] Suspended = 0 [L682] Executive = 0 [L683] DiskController = 0 [L684] FloppyDiskPeripheral = 0 [L685] FlConfigCallBack = 0 [L686] MaximumInterfaceType = 0 [L687] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L688] myStatus = 0 [L689] s = 0 [L690] UNLOADED = 0 [L691] NP = 0 [L692] DC = 0 [L693] SKIP1 = 0 [L694] SKIP2 = 0 [L695] MPR1 = 0 [L696] MPR3 = 0 [L697] IPC = 0 [L698] pended = 0 [L699] compRegistered = 0 [L700] lowerDriverReturn = 0 [L701] setEventCalled = 0 [L702] customIrp = 0 [L706] status = 0 [L707] pirp = irp [L708] CALL _BLAST_init() [L74] UNLOADED = 0 [L75] NP = 1 [L76] DC = 2 [L77] SKIP1 = 3 [L78] SKIP2 = 4 [L79] MPR1 = 5 [L80] MPR3 = 6 [L81] IPC = 7 [L82] s = UNLOADED [L83] pended = 0 [L84] compRegistered = 0 [L85] lowerDriverReturn = 0 [L86] setEventCalled = 0 [L87] customIrp = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L708] RET _BLAST_init() [L710] COND TRUE status >= 0 [L711] s = NP [L712] customIrp = 0 [L713] setEventCalled = customIrp [L714] lowerDriverReturn = setEventCalled [L715] compRegistered = lowerDriverReturn [L716] pended = compRegistered [L717] pirp__IoStatus__Status = 0 [L718] myStatus = 0 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, pirp=-2, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, UNLOADED=0] [L719] COND TRUE irp_choice == 0 [L720] pirp__IoStatus__Status = -1073741637 [L721] myStatus = -1073741637 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, UNLOADED=0] [L724] CALL stub_driver_init() [L661] s = NP [L662] pended = 0 [L663] compRegistered = 0 [L664] lowerDriverReturn = 0 [L665] setEventCalled = 0 [L666] customIrp = 0 VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L724] RET stub_driver_init() [L727] COND FALSE !(status < 0) [L731] int tmp_ndt_1; [L732] tmp_ndt_1 = __VERIFIER_nondet_int() [L733] COND TRUE tmp_ndt_1 == 3 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=0, pirp=-2, pirp__IoStatus__Status=-1073741637, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L740] CALL, EXPR FloppyPnp(devobj, pirp) [L164] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L165] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L166] int Irp__IoStatus__Information ; [L167] int Irp__IoStatus__Status ; [L168] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L169] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L170] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L171] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L172] int disketteExtension__HoldNewRequests ; [L173] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L174] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L175] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L176] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L177] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L178] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L179] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L180] int irpSp ; [L181] int disketteExtension ; [L182] int ntStatus ; [L183] int doneEvent = __VERIFIER_nondet_int() ; [L184] int irpSp___0 ; [L185] int nextIrpSp ; [L186] int nextIrpSp__Control ; [L187] int irpSp___1 ; [L188] int irpSp__Context ; [L189] int irpSp__Control ; [L190] long __cil_tmp29 ; [L191] long __cil_tmp30 ; [L194] ntStatus = 0 [L195] PagingReferenceCount ++ VAL [\old(DeviceObject)=-1, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L196] COND TRUE PagingReferenceCount == 1 VAL [\old(DeviceObject)=-1, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L199] disketteExtension = DeviceObject__DeviceExtension [L200] irpSp = Irp__Tail__Overlay__CurrentStackLocation VAL [\old(DeviceObject)=-1, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L201] COND FALSE !(\read(disketteExtension__IsRemoved)) VAL [\old(DeviceObject)=-1, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L210] COND FALSE !(irpSp__MinorFunction == 0) VAL [\old(DeviceObject)=-1, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L213] COND TRUE irpSp__MinorFunction == 5 VAL [\old(DeviceObject)=-1, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L239] COND TRUE irpSp__MinorFunction == 5 VAL [\old(DeviceObject)=-1, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L242] COND FALSE !(! disketteExtension__IsStarted) [L258] disketteExtension__HoldNewRequests = 1 [L259] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L101] int status ; [L102] int threadHandle = __VERIFIER_nondet_int() ; [L103] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L104] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L105] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L106] int Irp__IoStatus__Status ; [L107] int Irp__IoStatus__Information ; [L108] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L109] int ObjAttributes = __VERIFIER_nondet_int() ; [L110] int __cil_tmp12 ; [L111] int __cil_tmp13 ; VAL [\old(DisketteExtension)=0, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=0, DisketteExtension__PoweringDown=0, DisketteExtension__ThreadReferenceCount=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=0, UNLOADED=0] [L114] COND FALSE !(DisketteExtension__PoweringDown == 1) [L120] DisketteExtension__ThreadReferenceCount ++ VAL [\old(DisketteExtension)=0, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=0, DisketteExtension__PoweringDown=0, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=0, UNLOADED=0] [L121] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) VAL [\old(DisketteExtension)=0, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=0, DisketteExtension__PoweringDown=0, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=0, UNLOADED=0] [L153] COND TRUE pended == 0 [L154] pended = 1 VAL [\old(DisketteExtension)=0, \old(Irp)=-2, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=0, DisketteExtension__PoweringDown=0, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=0, UNLOADED=0] [L160] return (259); VAL [\old(DisketteExtension)=0, \old(Irp)=-2, \result=259, compRegistered=0, customIrp=0, DC=2, DiskController=0, DisketteExtension=0, DisketteExtension__FloppyThread=0, DisketteExtension__PoweringDown=0, DisketteExtension__ThreadReferenceCount=1, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ObjAttributes=0, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, threadHandle=0, UNLOADED=0] [L259] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L259] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L262] __cil_tmp29 = (long )ntStatus VAL [\old(DeviceObject)=-1, \old(Irp)=-2, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L263] COND TRUE __cil_tmp29 == 259L VAL [\old(DeviceObject)=-1, \old(Irp)=-2, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L265-L266] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L1036] COND FALSE !(s == MPR3) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1045] COND FALSE !(customIrp == 1) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1049] COND FALSE !(s == MPR3) VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1056] int tmp_ndt_8; [L1057] tmp_ndt_8 = __VERIFIER_nondet_int() [L1058] COND TRUE tmp_ndt_8 == 0 VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, tmp_ndt_8=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L1064] return (0); VAL [\old(Alertable)=0, \old(customIrp)=0, \old(Object)=1, \old(s)=1, \old(setEventCalled)=0, \old(Timeout)=0, \old(WaitMode)=0, \old(WaitReason)=0, \result=0, Alertable=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, Object=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, Timeout=0, tmp_ndt_8=0, UNLOADED=0, WaitMode=0, WaitReason=0] [L265-L266] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) VAL [\old(DeviceObject)=-1, \old(Irp)=-2, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0)=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L268] COND TRUE disketteExtension__FloppyThread != 0 VAL [\old(DeviceObject)=-1, \old(Irp)=-2, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=1, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L271] disketteExtension__FloppyThread = 0 [L272] Irp__IoStatus__Status = 0 [L273] myStatus = 0 VAL [\old(DeviceObject)=-1, \old(Irp)=-2, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L274] COND TRUE s == NP [L275] s = SKIP1 VAL [\old(DeviceObject)=-1, \old(Irp)=-2, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=-1, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=0, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L282] Irp__CurrentLocation ++ [L283] Irp__Tail__Overlay__CurrentStackLocation ++ VAL [\old(DeviceObject)=-1, \old(Irp)=-2, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L284] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) VAL [\old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L938] int returnVal2 ; [L939] int compRetStatus1 ; [L940] int lcontext = __VERIFIER_nondet_int() ; [L941] unsigned long __cil_tmp7 ; VAL [\old(DeviceObject)=0, \old(Irp)=-2, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lcontext=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L944] COND FALSE !(\read(compRegistered)) VAL [\old(DeviceObject)=0, \old(Irp)=-2, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lcontext=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L957] int tmp_ndt_12; [L958] tmp_ndt_12 = __VERIFIER_nondet_int() [L959] COND TRUE tmp_ndt_12 == 0 VAL [\old(DeviceObject)=0, \old(Irp)=-2, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lcontext=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L970] returnVal2 = 0 VAL [\old(DeviceObject)=0, \old(Irp)=-2, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lcontext=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L983] COND FALSE !(s == NP) VAL [\old(DeviceObject)=0, \old(Irp)=-2, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lcontext=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L987] COND FALSE !(s == MPR1) VAL [\old(DeviceObject)=0, \old(Irp)=-2, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lcontext=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L996] COND TRUE s == SKIP1 [L997] s = SKIP2 [L998] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=0, \old(Irp)=-2, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lcontext=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L1006] return (returnVal2); VAL [\old(DeviceObject)=0, \old(Irp)=-2, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, \result=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=0, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, Irp=-2, KernelMode=0, lcontext=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=1, pended=1, returnVal2=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, tmp_ndt_12=0, UNLOADED=0] [L284] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) VAL [\old(DeviceObject)=-1, \old(Irp)=-2, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IofCallDriver(disketteExtension__TargetObject, Irp)=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=259, PagingMutex=0, PagingReferenceCount=1, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L284] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L430] PagingReferenceCount -- VAL [\old(DeviceObject)=-1, \old(Irp)=-2, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L431] COND TRUE PagingReferenceCount == 0 VAL [\old(DeviceObject)=-1, \old(Irp)=-2, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L434] return (ntStatus); VAL [\old(DeviceObject)=-1, \old(Irp)=-2, \result=0, __cil_tmp29=259, compRegistered=0, customIrp=0, DC=2, DeviceObject=-1, DeviceObject__DeviceExtension=0, DiskController=0, disketteExtension=0, disketteExtension__ArcName=0, disketteExtension__ArcName__Length=0, disketteExtension__FloppyThread=0, disketteExtension__HoldNewRequests=1, disketteExtension__InterfaceString=0, disketteExtension__InterfaceString__Buffer=0, disketteExtension__IsRemoved=0, disketteExtension__IsStarted=1, disketteExtension__TargetObject=0, doneEvent=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IoGetConfigurationInformation__FloppyCount=0, IPC=7, Irp=-2, Irp__CurrentLocation=0, Irp__IoStatus__Status=0, Irp__Tail__Overlay__CurrentStackLocation=1, irpSp=0, irpSp__MinorFunction=5, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, ntStatus=0, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L740] RET, EXPR FloppyPnp(devobj, pirp) [L740] status = FloppyPnp(devobj, pirp) [L750] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L751] COND FALSE !(s == NP) VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L758] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L759] COND FALSE !(s == MPR3) VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L766] COND TRUE s != UNLOADED VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L767] COND TRUE status != -1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L768] COND FALSE !(s != SKIP2) VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L782] COND TRUE pended == 1 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L783] COND TRUE status != 259 VAL [compRegistered=0, customIrp=0, DC=2, devobj=-1, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, irp=-2, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, pirp=-2, pirp__IoStatus__Status=-1073741637, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=0, tmp_ndt_1=3, UNLOADED=0] [L784] CALL errorFn() VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] [L65] reach_error() VAL [compRegistered=0, customIrp=0, DC=2, DiskController=0, Executive=0, FlConfigCallBack=0, FloppyDiskPeripheral=0, FloppyThread=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MaximumInterfaceType=0, MOUNTDEV_MOUNTED_DEVICE_GUID=0, MPR1=5, MPR3=6, myStatus=0, NP=1, PagingMutex=0, PagingReferenceCount=0, pended=1, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=0, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 238 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.0s, OverallIterations: 37, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6707 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6595 mSDsluCounter, 40393 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29415 mSDsCounter, 1051 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7469 IncrementalHoareTripleChecker+Invalid, 8520 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1051 mSolverCounterUnsat, 10978 mSDtfsCounter, 7469 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 355 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=657occurred in iteration=12, InterpolantAutomatonStates: 243, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 36 MinimizatonAttempts, 1003 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 1537 NumberOfCodeBlocks, 1537 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 1435 ConstructedInterpolants, 0 QuantifiedInterpolants, 3648 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 36 InterpolantComputations, 36 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-17 02:48:59,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE